build.gradle

@@ -1,22 +1,43 @@
 plugins {
-	id 'java'
-	id 'org.springframework.boot' version '3.0.2'
-	id 'io.spring.dependency-management' version '1.1.0'
+    id 'java'
+    id 'org.springframework.boot' version '3.0.4'
+    id 'io.spring.dependency-management' version '1.1.0'
 }
 
 group = 'com.example'
 version = '0.0.1-SNAPSHOT'
-sourceCompatibility = '17'
+sourceCompatibility = '19'
 
 repositories {
-	mavenCentral()
+    mavenCentral()
+}
+
+jar {
+    enabled = false
 }
 
 dependencies {
-	implementation 'org.springframework.boot:spring-boot-starter-web'
-	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    implementation 'org.springframework.boot:spring-boot-starter-web'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation 'org.springframework.boot:spring-boot-devtools'
+    implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect'
+
+    implementation 'org.webjars.npm:bootstrap:5.3.0-alpha2'
+    implementation 'org.webjars:jquery:3.6.0'
+    implementation 'org.webjars:font-awesome:6.1.0'
+
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    implementation 'com.h2database:h2:2.1.210'
+
+    implementation 'org.hibernate.validator:hibernate-validator'
+
+    implementation 'org.springdoc:springdoc-openapi-ui:1.6.5'
+    implementation 'org.projectlombok:lombok:1.18.22'
+
+    testImplementation 'org.springframework.boot:spring-boot-starter-test'
+
 }
 
 tasks.named('test') {
-	useJUnitPlatform()
+    useJUnitPlatform()
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew.bat

@@ -1,91 +1,91 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%"=="" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%"=="" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if %ERRORLEVEL% equ 0 goto execute
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto execute
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
-
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -1 +1,2 @@
-rootProject.name = 'demo1'
+rootProject.name = 'demo'
+include 'front'

src/main/java/com/example/demo/Demo1Application.java

@@ -1,18 +0,0 @@
-package com.example.demo;
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-
-@SpringBootApplication
-@RestController
-public class Demo1Application {
-	public static void main(String[] args) {
-		SpringApplication.run(Demo1Application.class, args);
-	}
-	@GetMapping("/")
-	public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {
-		return String.format("Hello %s!", name);
-	}
-}

src/main/java/com/example/demo/DemoApplication.java

@@ -0,0 +1,15 @@
+package com.example.demo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.RestController;
+
+@SpringBootApplication
+@RestController
+public class DemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(DemoApplication.class, args);
+    }
+
+}

src/main/java/com/example/demo/WebConfiguration.java

@@ -0,0 +1,34 @@
+package com.example.demo;
+
+import org.springframework.boot.web.server.ErrorPage;
+import org.springframework.boot.web.server.WebServerFactoryCustomizer;
+import org.springframework.boot.web.servlet.server.ConfigurableServletWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistration;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+@Configuration
+public class WebConfiguration implements WebMvcConfigurer {
+    public static final String REST_API = "/api";
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**").allowedMethods("*");
+    }
+
+    @Override
+    public void addViewControllers(ViewControllerRegistry registry) {
+        ViewControllerRegistration registration = registry.addViewController("/notFound");
+        registration.setViewName("forward:/index.html");
+        registration.setStatusCode(HttpStatus.OK);
+    }
+
+    @Bean
+    public WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> containerCustomizer() {
+        return container -> {
+            container.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/notFound"));
+        };
+    }
+}

src/main/java/com/example/demo/master/Master.java

@@ -0,0 +1,87 @@
+package com.example.demo.master;
+
+import com.example.demo.order.Order;
+import jakarta.persistence.*;
+
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+
+public class Master {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name="_id")
+    private Long id;
+    @Column()
+    private String firstName;
+    private String lastName;
+    private String email;
+    private String password;
+
+    public Master() {
+    }
+
+    public Master(String firstName, String lastName, String email, String password) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+        this.email = email;
+        this.password = password;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public String getEmail() {return email; }
+
+    public String getPassword() { return password; }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Master master = (Master) o;
+        return Objects.equals(id, master.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Master{" +
+                "id=" + id +
+                ", firstName='" + firstName + '\'' +
+                ", lastName='" + lastName + '\'' +
+                ", email='" + email + '\'' +
+                ", password='" + password + '\'' +
+                '}';
+    }
+}

src/main/java/com/example/demo/master/MasterController.java

@@ -0,0 +1,75 @@
+package com.example.demo.master;
+
+import com.example.demo.WebConfiguration;
+import com.example.demo.order.OrderService;
+import com.example.demo.product.ProductDto;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+
+@RestController
+@RequestMapping(WebConfiguration.REST_API + "/master")
+public class MasterController {
+    private final MasterService masterService;
+    private final OrderService orderService;
+
+
+    public MasterController(MasterService masterService, OrderService orderService) {
+        this.masterService = masterService;
+        this.orderService = orderService;
+    }
+
+    @GetMapping("/")
+    public MasterDto getCurrentMaster() {
+        return new MasterDto(masterService.findMaster(masterService.getCurrentMasterId()));
+
+    }
+    @GetMapping("/{email}/{password}")
+    public MasterDto getCurrentMaster(@PathVariable("email") String email,
+                            @PathVariable("password") String password) {
+        var master = new MasterDto(masterService.findMaster(email, password));
+        masterService.setCurrentMasterId(master.getId());
+        return master;
+    }
+    @PostMapping("/")
+    public MasterDto createMaster(@RequestParam("firstName") String firstName,
+                                  @RequestParam("lastName") String lastName,
+                                  @RequestParam("email") String email,
+                                  @RequestParam("password") String password) {
+        MasterDto master = new MasterDto(masterService.addMaster(firstName, lastName, email, password));
+        masterService.setCurrentMasterId(master.getId());
+        orderService.addOrder(master.getId());
+        return master;
+    }
+
+    @PatchMapping("/")
+    public MasterDto updateMaster(@RequestParam("firstName") String firstName,
+                                  @RequestParam("lastName") String lastName,
+                                  @RequestParam("email") String email,
+                                  @RequestParam("password") String password) {
+        return new MasterDto(masterService.updateMaster(masterService.getCurrentMasterId(),
+                firstName, lastName, email, password));
+    }
+
+    @DeleteMapping("/")
+    public MasterDto deleteMaster(@PathVariable Long id) {
+        return new MasterDto(masterService.deleteMaster(masterService.getCurrentMasterId()));
+    }
+
+    @PostMapping("/log_out")
+    public void logOut() {
+        masterService.setCurrentMasterId(0L);
+    }
+
+    @GetMapping("/all")
+    public List<MasterDto> GetMasters(){
+        return masterService.findAllMasters().stream().map(MasterDto::new).toList();
+    }
+}

src/main/java/com/example/demo/master/MasterDto.java

@@ -0,0 +1,44 @@
+package com.example.demo.master;
+
+import com.example.demo.order.Order;
+import jakarta.validation.constraints.NotBlank;
+
+import java.util.List;
+
+public class MasterDto {
+    private final Long id;
+    @NotBlank
+    private final String firstName;
+    @NotBlank
+    private final String lastName;
+
+    @NotBlank
+    private final String email;
+
+    @NotBlank
+    private final String password;
+
+    public MasterDto(Master master) {
+        id = master.getId();
+        firstName = master.getFirstName();
+        lastName = master.getLastName();
+        email = master.getEmail();
+        password = master.getPassword();
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public String getEmail() {return email; }
+
+    public String getPassword() { return password; }
+}

src/main/java/com/example/demo/master/MasterMvcController.java

@@ -0,0 +1,84 @@
+package com.example.demo.master;
+
+import com.example.demo.order.OrderService;
+import com.example.demo.product.ProductDto;
+import com.example.demo.product.ProductService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.*;
+
+@Controller
+@RequestMapping("/master")
+public class MasterMvcController {
+    private final MasterService masterService;
+    private final OrderService orderService;
+
+    public MasterMvcController(MasterService masterService, OrderService orderService) {
+        this.masterService = masterService;
+        this.orderService = orderService;
+    }
+
+    @GetMapping("/login")
+    public String loginPage(Model model) {
+        if (masterService.getCurrentMasterId() != 0) {
+            return "redirect:/product";
+        }
+        model.addAttribute("user", new Master());
+        return "Login";
+    }
+
+    @PostMapping("/login")
+    public String login(@ModelAttribute Master user) {
+        var master = new MasterDto(masterService.findMaster(user.getEmail(), user.getPassword()));
+        masterService.setCurrentMasterId(master.getId());
+        return "redirect:/product/my_products";
+    }
+
+    @GetMapping("")
+    public String getUserPage(Model model) {
+        if (masterService.getCurrentMasterId() != 0) {
+            model.addAttribute("user", masterService.findMaster(masterService.getCurrentMasterId()));
+        } else {
+            return "redirect:/master/register";
+        }
+        return "UserPage";
+    }
+
+    @PostMapping(value = "", params = "action=update")
+    public String updateUserPage(@ModelAttribute Master user) {
+        if (masterService.getCurrentMasterId() == 0) {
+            return "redirect:/master";
+        }
+        masterService.updateMaster(
+                masterService.getCurrentMasterId(),
+                user.getFirstName(),
+                user.getLastName(),
+                user.getEmail(),
+                user.getPassword());
+        return "redirect:/product";
+    }
+
+    @PostMapping(value = "", params = "action=log_out")
+    public String logOut() {
+        masterService.setCurrentMasterId(0L);
+        return "redirect:/product";
+    }
+
+    @GetMapping("/register")
+    public String registerPage(Model model) {
+        model.addAttribute("user", new Master());
+        return "UserPage";
+    }
+
+    @PostMapping(value = "/register", params = "action=register")
+    public String register(@ModelAttribute Master user) {
+        MasterDto master = new MasterDto(masterService.addMaster(
+                user.getFirstName(),
+                user.getLastName(),
+                user.getEmail(),
+                user.getPassword()));
+        masterService.setCurrentMasterId(master.getId());
+        orderService.addOrder(master.getId());
+        return "redirect:/product/my_products";
+    }
+}

src/main/java/com/example/demo/master/MasterNotFoundException.java

@@ -0,0 +1,10 @@
+package com.example.demo.master;
+
+public class MasterNotFoundException extends RuntimeException {
+    public MasterNotFoundException(Long id) {
+        super(String.format("Master with id [%s] is not found", id));
+    }
+    public MasterNotFoundException(String email) {
+        super(String.format("Master with email [%s] is not found", email));
+    }
+}

src/main/java/com/example/demo/master/MasterRepository.java

@@ -0,0 +1,10 @@
+package com.example.demo.master;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface MasterRepository extends JpaRepository<Master, Long> {
+    Optional<Master> findByEmail(String email);
+}

src/main/java/com/example/demo/master/MasterService.java

@@ -0,0 +1,89 @@
+package com.example.demo.master;
+
+import com.example.demo.order.Order;
+import com.example.demo.order.OrderController;
+import com.example.demo.order.OrderService;
+import com.example.demo.util.validation.ValidatorUtil;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.Optional;
+
+@Service
+public class MasterService {
+    private final MasterRepository masterRepository;
+
+    private final ValidatorUtil validatorUtil;
+
+    private Long currentMasterId = 0L;
+
+    public MasterService(MasterRepository masterRepository, ValidatorUtil validatorUtil) {
+        this.masterRepository = masterRepository;
+        this.validatorUtil = validatorUtil;
+    }
+
+    @Transactional
+    public Master addMaster(String firstName, String lastName, String email, String password) {
+        final Master master = new Master(firstName, lastName, email, password);
+        validatorUtil.validate(master);
+        return masterRepository.save(master);
+    }
+
+    @Transactional(readOnly = true)
+    public Master findMaster(Long id) {
+        final Optional<Master> mater = masterRepository.findById(id);
+        return mater.orElseThrow(() -> new MasterNotFoundException(id));
+    }
+
+
+    @Transactional(readOnly = true)
+    public Master findMaster(String email, String password) {
+        final Optional<Master> master = masterRepository.findByEmail(email);
+        Master realMaster = master.orElseThrow(() -> new MasterNotFoundException(email));
+        if (!Objects.equals(realMaster.getPassword(), password)) {
+            throw new MasterNotFoundException(email);
+        }
+        return realMaster;
+    }
+
+    @Transactional(readOnly = true)
+    public List<Master> findAllMasters() {
+        return masterRepository.findAll();
+    }
+
+    @Transactional
+    public Master updateMaster(Long id, String firstName, String lastName, String email, String password) {
+        final Master master = findMaster(id);
+        master.setFirstName(firstName);
+        master.setLastName(lastName);
+        master.setEmail(email);
+        master.setPassword(password);
+        validatorUtil.validate(master);
+        return masterRepository.save(master);
+    }
+
+    @Transactional
+    public Master deleteMaster(Long id) {
+        final Master master = findMaster(id);
+        masterRepository.delete(master);
+        return master;
+    }
+
+    @Transactional
+    public void deleteAllMasters() {
+        masterRepository.deleteAll();
+    }
+
+    @Transactional
+    public Long getCurrentMasterId (){
+        return currentMasterId;
+    }
+
+    @Transactional
+    public void setCurrentMasterId(Long masterId) {
+        currentMasterId = masterId;
+    }
+
+}

src/main/java/com/example/demo/order/Order.java

@@ -0,0 +1,97 @@
+package com.example.demo.order;
+
+import com.example.demo.master.Master;
+import com.example.demo.product.Product;
+import jakarta.persistence.*;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+@Table(name = "Master_order")
+public class Order {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name="_id")
+    private Long id;
+
+
+    @ManyToOne(fetch = FetchType.EAGER)
+    private Master master;
+    @ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.PERSIST)
+    @JoinTable(name = "order_products", joinColumns = {@JoinColumn(name = "order_id")}, inverseJoinColumns = {@JoinColumn(name = "product_id")})
+    private List<Product> products;
+
+    private OrderStatus status;
+
+    public Order() {
+        status = OrderStatus.Open;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void buyProducts() {
+        for (var item: products) {
+            removeProduct(item);
+        }
+    }
+
+    public void addProduct(Product product) {
+        if (products == null)
+            products = new ArrayList<>();
+        products.add(product);
+    }
+
+    public void removeProduct(Product product) {
+        if (products == null)
+            products = new ArrayList<>();
+        products.remove(product);
+    }
+
+    public Master getMaster() {
+        return master;
+    }
+
+    public void setMaster(Master master) {
+        this.master = master;
+    }
+
+    public List<Product> getProducts() {
+        return products;
+    }
+    public OrderStatus getStatus() {return status;}
+
+    public void setStatus(OrderStatus status) {
+        this.status = status;
+    }
+
+    public void setProducts(List<Product> products) {
+        this.products = products;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Order order = (Order) o;
+        return Objects.equals(id, order.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Order {" +
+                "id=" + id +
+                ", master='" + master.toString() + '\'' +
+                ", products='" + products.toString() + '\'';
+    }
+}

src/main/java/com/example/demo/order/OrderController.java

@@ -0,0 +1,54 @@
+package com.example.demo.order;
+
+import com.example.demo.WebConfiguration;
+import com.example.demo.master.MasterService;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping(WebConfiguration.REST_API + "/order")
+public class OrderController {
+    private final OrderService orderService;
+    private final MasterService masterService;
+
+    public OrderController(OrderService orderService, MasterService masterService) {
+        this.orderService = orderService;
+        this.masterService = masterService;
+    }
+
+    @GetMapping("/{id}")
+    public OrderDto getOrder(@PathVariable Long id) {
+        return new OrderDto(orderService.findOrder(id));
+    }
+
+    @DeleteMapping("/")
+    public void buyProducts() {
+        orderService.buyProducts(masterService.getCurrentMasterId());
+    }
+
+    @GetMapping("/")
+    public List<OrderDto> getOrder() {
+        return orderService.findAllOrders().stream().map(OrderDto::new).toList();
+    }
+
+    @PostMapping("/")
+    public OrderDto createOrder(@RequestParam("master") Long masterId) {
+        return new OrderDto(orderService.addOrder(masterId));
+    }
+
+    @PostMapping("/{product}")
+    public void addProduct(@PathVariable("product") Long productId) {
+        orderService.addProduct(masterService.getCurrentMasterId(), productId);
+    }
+
+    @DeleteMapping("/{product}")
+    public void deleteProduct(@PathVariable("product") Long productId) {
+        orderService.deleteProduct(masterService.getCurrentMasterId(), productId);
+    }
+
+    @GetMapping("/findOrders/{masterId}")
+    public List<OrderDto> findOrders(@PathVariable("masterId") Long masterId) {
+        return orderService.findMastersOrders(masterId).stream().map(OrderDto::new).toList();
+    }
+}

src/main/java/com/example/demo/order/OrderDto.java

@@ -0,0 +1,51 @@
+package com.example.demo.order;
+
+import com.example.demo.master.Master;
+import com.example.demo.product.Product;
+import jakarta.validation.constraints.NotBlank;
+
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+public class OrderDto {
+    private final Long id;
+    @NotBlank
+    private final Master master;
+    private final List<Product> products;
+
+    private final OrderStatus status;
+
+    private final int cost;
+
+    public OrderDto(Order order) {
+        id = order.getId();
+        master = order.getMaster();
+        products = order.getProducts();
+        status = order.getStatus();
+        int cost1 = 0;
+        for (var item : products) {
+            cost1 += item.getCost();
+        }
+        cost = cost1;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public Master getMaster() {
+        return master;
+    }
+
+    public List<Product> getProducts() {
+        return products;
+    }
+
+    public OrderStatus getStatus() {
+        return status;
+    }
+    public int getCost() {
+        return cost;
+    }
+}

src/main/java/com/example/demo/order/OrderMvcController.java

@@ -0,0 +1,66 @@
+package com.example.demo.order;
+
+import com.example.demo.master.MasterService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.ArrayList;
+import java.util.Objects;
+import java.util.concurrent.atomic.AtomicInteger;
+
+@Controller
+@RequestMapping("/order")
+public class OrderMvcController {
+    private final MasterService masterService;
+    private final OrderService orderService;
+
+    public OrderMvcController(MasterService masterService, OrderService orderService) {
+        this.masterService = masterService;
+        this.orderService = orderService;
+    }
+
+    @GetMapping("")
+    public String getOrder(Model model) {
+        if (masterService.getCurrentMasterId() == 0) {
+            return "redirect:/master/login";
+        }
+        model.addAttribute("user", masterService.findMaster(masterService.getCurrentMasterId()));
+        model.addAttribute("order", orderService.findOrder(masterService.getCurrentMasterId()));
+        AtomicInteger fullCost = new AtomicInteger();
+        orderService.findOrder(masterService.getCurrentMasterId()).getProducts().forEach(
+                item -> fullCost.addAndGet(item.getCost()));
+        model.addAttribute("fullCost", fullCost);
+        return "OrderPage";
+    }
+
+    @PostMapping(value = "", params = "action=delete")
+    public String deleteProduct(@RequestParam(value = "id", required = true) Long id) {
+        orderService.deleteProduct(masterService.getCurrentMasterId(), id);
+        return "redirect:/order";
+    }
+
+    @PostMapping(value = "", params = "action=buy")
+    public String buyProducts() {
+        orderService.buyProducts(masterService.getCurrentMasterId());
+        return "redirect:/product";
+    }
+
+    @GetMapping("/masters_order")
+    public String MastersOrders(Model model, @RequestParam(value = "master_id", defaultValue = "-1") String masterId) {
+        model.addAttribute("user", masterService.findMaster(masterService.getCurrentMasterId()));
+        model.addAttribute("masters", masterService.findAllMasters());
+
+        if (!Objects.equals(masterId, "-1")) {
+            model.addAttribute("orders", orderService.findMastersOrders(Long.valueOf(masterId)).
+                    stream().map(OrderDto::new).toList());
+        }
+        else {
+            model.addAttribute("orders", new ArrayList<OrderDto>());
+        }
+        return "MastersOrders";
+    }
+}

src/main/java/com/example/demo/order/OrderNotFoundException.java

@@ -0,0 +1,7 @@
+package com.example.demo.order;
+
+public class OrderNotFoundException extends RuntimeException {
+    public OrderNotFoundException(Long id) {
+        super(String.format("Order with id [%s] is not found", id));
+    }
+}

src/main/java/com/example/demo/order/OrderRepository.java

@@ -0,0 +1,13 @@
+package com.example.demo.order;
+
+import com.example.demo.master.Master;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface OrderRepository extends JpaRepository<Order, Long> {
+    Optional<Order> findByMasterAndStatus(Master master, OrderStatus status);
+
+    List<Order> findByMaster(Master master);
+}

src/main/java/com/example/demo/order/OrderService.java

@@ -0,0 +1,95 @@
+package com.example.demo.order;
+
+import com.example.demo.master.MasterService;
+import com.example.demo.product.*;
+import com.example.demo.util.validation.ValidatorUtil;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+public class OrderService {
+    private final OrderRepository orderRepository;
+    private final ProductService productService;
+    private final MasterService masterService;
+    private final ValidatorUtil validatorUtil;
+
+    public OrderService(OrderRepository orderRepository, ProductService productService,
+                        MasterService masterService, ValidatorUtil validatorUtil) {
+        this.orderRepository = orderRepository;
+        this.productService = productService;
+        this.masterService = masterService;
+        this.validatorUtil = validatorUtil;
+    }
+
+    @Transactional
+    public Order addOrder(Long masterId) {
+        final Order order = new Order();
+        order.setMaster(masterService.findMaster(masterId));
+        validatorUtil.validate(order);
+        return orderRepository.save(order);
+    }
+
+    @Transactional
+    public void addProduct(Long masterId, Long productId) {
+        final Order order = findOrder(masterId);
+        final Product product = productService.findProduct(productId);
+        order.addProduct(product);        var products = new ArrayList<Product>();
+        product.setOrder(order);
+        product.setAvailable(Status.Ordered);
+        orderRepository.save(order);
+    }
+
+    @Transactional
+    public void buyProducts(Long masterId) {
+        final Order order = findOrder(masterId);
+        for (var item: order.getProducts()) {
+            item.setAvailable(Status.Bought);
+        }
+        order.setStatus(OrderStatus.Closed);
+        orderRepository.save(order);
+        addOrder(masterId);
+    }
+
+    @Transactional
+    public void deleteProduct(Long masterId, Long productId) {
+        final Order order = findOrder(masterId);
+        final Product product = productService.findProduct(productId);
+        order.removeProduct(product);
+        product.removeOrder(order);
+        product.setAvailable(Status.Availible);
+        orderRepository.save(order);
+    }
+
+    @Transactional()
+    public Order findOrder(Long masterId) {
+        return orderRepository.findByMasterAndStatus(masterService.findMaster(masterId), OrderStatus.Open).orElseThrow(
+                        () -> new OrderNotFoundException(masterId));
+    }
+
+    @Transactional(readOnly = true)
+    public List<Order> findAllOrders() {
+        return orderRepository.findAll();
+    }
+
+    @Transactional
+    public Order deleteOrder(Long id) {
+        final Order order = findOrder(id);
+        order.setStatus(OrderStatus.Closed);
+        orderRepository.save(order);
+        return addOrder(id);
+    }
+
+    @Transactional
+    public void deleteAllOrders() {
+        orderRepository.deleteAll();
+    }
+
+
+    @Transactional
+    public List<Order> findMastersOrders(Long masterId) {
+        return orderRepository.findByMaster(masterService.findMaster(masterId));
+    }
+}

src/main/java/com/example/demo/order/OrderStatus.java

@@ -0,0 +1,6 @@
+package com.example.demo.order;
+
+public enum OrderStatus {
+    Open,
+    Closed
+}

src/main/java/com/example/demo/product/Product.java

@@ -0,0 +1,111 @@
+package com.example.demo.product;
+
+import com.example.demo.master.Master;
+import com.example.demo.order.Order;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import jakarta.persistence.*;
+
+import java.util.List;
+import java.util.Objects;
+
+@Entity
+public class Product {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    @Column(name="_id")
+    private Long id;
+    @Column()
+    private String name;
+    private Integer cost;
+
+    @ManyToMany(fetch = FetchType.LAZY)
+    @JsonIgnore
+    private List<Order> mastersOrders;
+
+    @ManyToOne(fetch = FetchType.EAGER)
+    private Master master;
+
+    private Status status;
+
+    public Product() {
+    }
+
+    public Product(String name, Integer cost) {
+        this.name = name;
+        this.cost = cost;
+        this.status = Status.Availible;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String _name) {
+        this.name = _name;
+    }
+
+    public Integer getCost() {
+        return cost;
+    }
+
+    public void setCost(Integer cost) {
+        this.cost = cost;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Product product = (Product) o;
+        return Objects.equals(id, product.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Product {" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", cost='" + cost.toString() + '\'' +
+                ", master='" + master.toString() + '\'' +
+                '}';
+    }
+
+
+    public Master getMaster() {
+        return master;
+    }
+
+    public void setMaster(Master master) {
+        this.master = master;
+    }
+    public List<Order> getOrders() {
+        return mastersOrders;
+    }
+    public void setOrder(Order order) {
+        if (!order.getProducts().contains(this)) {
+            order.getProducts().add(this);
+        }
+    }
+
+    public void removeOrder(Order order) {
+        order.getProducts().remove(this);
+    }
+
+    public Status getAvailable() {
+        return this.status;
+    }
+
+    public void setAvailable(Status status) {
+        this.status = status;
+    }
+
+}

src/main/java/com/example/demo/product/ProductController.java

@@ -0,0 +1,59 @@
+package com.example.demo.product;
+
+import com.example.demo.WebConfiguration;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.List;
+@RestController
+@RequestMapping(WebConfiguration.REST_API + "/product")
+public class ProductController {
+    private final ProductService productService;
+
+
+    public ProductController(ProductService productService) {
+        this.productService = productService;
+    }
+
+    @GetMapping("/{id}")
+    public ProductDto getProduct(@PathVariable Long id) {
+        return new ProductDto(productService.findProduct(id));
+    }
+
+    @GetMapping("/")
+    public List<ProductDto> getProduct() {
+        return productService.findAllProducts().stream().map(ProductDto::new).toList();
+    }
+
+    @GetMapping("/master/{id}")
+    public List<ProductDto> getMasterProduct(@PathVariable("id") Long id) {
+        return productService.findProducts(id).stream().map(ProductDto::new).toList();
+    }
+
+    @PostMapping("/{name}/{cost}/{masterId}")
+    public ProductDto createProduct(@PathVariable("name") String name,
+                                 @PathVariable("cost") Integer cost,
+                                    @PathVariable("masterId") Long masterId) {
+        return new ProductDto(productService.addProduct(name, cost, masterId));
+    }
+
+    @PatchMapping("/{id}")
+    public ProductDto updateProduct(@PathVariable Long id,
+                                 @RequestParam("name") String name,
+                                 @RequestParam("cost") Integer cost) {
+        return new ProductDto(productService.updateProduct(id, name, cost));
+    }
+
+    @DeleteMapping("/{id}")
+    public ProductDto deleteProduct(@PathVariable Long id) {
+        return new ProductDto(productService.deleteProduct(id));
+    }
+
+}

src/main/java/com/example/demo/product/ProductDto.java

@@ -0,0 +1,54 @@
+package com.example.demo.product;
+
+import com.example.demo.master.Master;
+import com.example.demo.order.Order;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotBlank;
+
+import java.util.List;
+
+public class ProductDto {
+    private final long id;
+    @NotBlank
+    private final String name;
+    @Min(1)
+    private final int cost;
+    private final List<Order> orders;
+    @NotBlank
+    private final Master master;
+    @NotBlank
+    private final Status status;
+
+    public ProductDto(Product product) {
+        id = product.getId();
+        name = product.getName();
+        cost = product.getCost();
+        orders = product.getOrders();
+        master = product.getMaster();
+        status = product.getAvailable();
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Integer getCost() {
+        return cost;
+    }
+
+    public List<Order> getOrders() {
+        return orders;
+    }
+
+    public Master getMaster() {
+        return master;
+    }
+
+    public Status getStatus() {
+        return status;
+    }
+}

src/main/java/com/example/demo/product/ProductMvcController.java

@@ -0,0 +1,102 @@
+package com.example.demo.product;
+
+import com.example.demo.master.Master;
+import com.example.demo.master.MasterService;
+import com.example.demo.order.OrderService;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.*;
+
+
+@Controller
+@RequestMapping("/product")
+public class ProductMvcController {
+    private final ProductService productService;
+    private final MasterService masterService;
+    private final OrderService orderService;
+    public ProductMvcController(MasterService masterService,
+                                ProductService productService,
+                                OrderService orderService) {
+        this.masterService = masterService;
+        this.productService = productService;
+        this.orderService = orderService;
+    }
+
+    @GetMapping("")
+    public String getProducts(Model model) {
+        if (masterService.getCurrentMasterId() != 0) {
+            Master user = masterService.findMaster(masterService.getCurrentMasterId());
+            model.addAttribute("user", user);
+        }
+        else {
+            model.addAttribute("user", new Master());
+        }
+        model.addAttribute("products", productService.findAllProducts()
+                .stream().map(ProductDto::new).toList());
+        return "Products";
+    }
+
+    @PostMapping("")
+    public String addProductToOrder(@RequestParam(value = "id", required = true) Long id) {
+        if (masterService.getCurrentMasterId() == 0) {
+            return "redirect:/master/login";
+        }
+        orderService.addProduct(masterService.getCurrentMasterId(), id);
+        return "redirect:/product";
+    }
+
+
+    @GetMapping("/my_products")
+    public String getMasterProduct(Model model) {
+        if (masterService.getCurrentMasterId() == 0) {
+            return "redirect:/product";
+        }
+        model.addAttribute("user",
+                masterService.findMaster(masterService.getCurrentMasterId()));
+        model.addAttribute("products",
+                productService.findProducts(masterService.getCurrentMasterId()).stream().map(ProductDto::new).toList());
+        return "UserProducts";
+    }
+
+    @GetMapping("/create_product")
+    public String createProductPage(Model model) {
+        if (masterService.getCurrentMasterId() == 0) {
+            return "redirect:/product";
+        }
+        model.addAttribute("user", masterService.findMaster(masterService.getCurrentMasterId()));
+        model.addAttribute("product", new Product());
+        model.addAttribute("buttonText", "Create");
+        return "ProductCreate";
+    }
+
+    @PostMapping("/create_product")
+    public String createProduct(@ModelAttribute Product product) {
+        productService.addProduct(
+                product.getName(),
+                product.getCost(),
+                masterService.getCurrentMasterId()
+        );
+        return "redirect:/product/my_products";
+    }
+
+    @GetMapping("/update_product/{id}")
+    public String updateProductPage(Model model, @PathVariable("id") Long id) {
+        if (masterService.getCurrentMasterId() == 0) {
+            return "redirect:/product";
+        }
+        model.addAttribute("user", masterService.findMaster(masterService.getCurrentMasterId()));
+        model.addAttribute("product", productService.findProduct(id));
+        model.addAttribute("buttonText", "Update");
+        return "ProductCreate";
+    }
+
+    @PostMapping("/update_product/{id}")
+    public String createProduct(@ModelAttribute Product product, @PathVariable("id") Long id) {
+        productService.updateProduct(
+                id,
+                product.getName(),
+                product.getCost()
+        );
+        return "redirect:/product/my_products";
+    }
+}

src/main/java/com/example/demo/product/ProductNotFoundException.java

@@ -0,0 +1,7 @@
+package com.example.demo.product;
+
+public class ProductNotFoundException extends RuntimeException {
+    public ProductNotFoundException(Long id) {
+        super(String.format("Product with id [%s] is not found", id));
+    }
+}

src/main/java/com/example/demo/product/ProductRepository.java

@@ -0,0 +1,13 @@
+package com.example.demo.product;
+
+import com.example.demo.master.Master;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface ProductRepository extends JpaRepository<Product, Long> {
+    List<Product> findByMaster(Master master);
+
+    List<Product> findByStatus(Status status);
+}

src/main/java/com/example/demo/product/ProductService.java

@@ -0,0 +1,68 @@
+package com.example.demo.product;
+
+import com.example.demo.master.*;
+import com.example.demo.util.validation.ValidatorUtil;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+import java.util.Optional;
+
+@Service
+public class ProductService {
+    private final ProductRepository productRepository;
+    private final ValidatorUtil validatorUtil;
+    private final MasterService masterService;
+
+    public ProductService(ProductRepository productRepository, MasterService masterService, ValidatorUtil validatorUtil) {
+        this.productRepository = productRepository;
+        this.validatorUtil = validatorUtil;
+        this.masterService = masterService;
+    }
+
+    @Transactional
+    public Product addProduct(String name, Integer cost, Long masterId) {
+        final Product product = new Product(name, cost);
+        validatorUtil.validate(product);
+        product.setMaster(masterService.findMaster(masterId));
+        return productRepository.save(product);
+    }
+
+    @Transactional(readOnly = true)
+    public Product findProduct(Long id) {
+        final Optional<Product> product = productRepository.findById(id);
+        return product.orElseThrow(() -> new ProductNotFoundException(id));
+    }
+
+    @Transactional(readOnly = true)
+    public List<Product> findProducts(Long masterId) {
+        List<Product> products = productRepository.findByMaster(masterService.findMaster(masterId));
+        return products.stream().filter((item) -> item.getAvailable() != Status.Bought).toList();
+    }
+
+    @Transactional(readOnly = true)
+    public List<Product> findAllProducts() {
+        return productRepository.findByStatus(Status.Availible);
+    }
+
+    @Transactional
+    public Product updateProduct(Long id, String name, Integer cost) {
+        final Product product = findProduct(id);
+        product.setName(name);
+        product.setCost(cost);
+        validatorUtil.validate(product);
+        return productRepository.save(product);
+    }
+
+    @Transactional
+    public Product deleteProduct(Long id) {
+        final Product product = findProduct(id);
+        productRepository.delete(product);
+        return product;
+    }
+
+    @Transactional
+    public void deleteAllProducts() {
+        productRepository.deleteAll();
+    }
+}

src/main/java/com/example/demo/product/Status.java

@@ -0,0 +1,7 @@
+package com.example.demo.product;
+
+public enum Status {
+    Availible,
+    Ordered,
+    Bought
+}

src/main/java/com/example/demo/util/error/AdviceController.java

@@ -0,0 +1,44 @@
+package com.example.demo.util.error;
+
+import com.example.demo.master.MasterNotFoundException;
+import com.example.demo.order.Order;
+import com.example.demo.order.OrderNotFoundException;
+import com.example.demo.product.ProductNotFoundException;
+import com.example.demo.util.validation.ValidationException;
+import org.springframework.context.support.DefaultMessageSourceResolvable;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+
+
+import java.util.stream.Collectors;
+
+@ControllerAdvice
+public class AdviceController {
+    @ExceptionHandler({
+            MasterNotFoundException.class,
+            ProductNotFoundException.class,
+            OrderNotFoundException.class,
+            ValidationException.class,
+    })
+    public ResponseEntity<Object> handleException(Throwable e) {
+        return new ResponseEntity<>(e.getMessage(), HttpStatus.BAD_REQUEST);
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ResponseEntity<Object> handleBindException(MethodArgumentNotValidException e) {
+        final ValidationException validationException = new ValidationException(
+                e.getBindingResult().getAllErrors().stream()
+                        .map(DefaultMessageSourceResolvable::getDefaultMessage)
+                        .collect(Collectors.toSet()));
+        return handleException(validationException);
+    }
+
+    @ExceptionHandler(Exception.class)
+    public ResponseEntity<Object> handleUnknownException(Throwable e) {
+        e.printStackTrace();
+        return new ResponseEntity<>(e.getMessage(), HttpStatus.INTERNAL_SERVER_ERROR);
+    }
+}

src/main/java/com/example/demo/util/validation/ValidationException.java

@@ -0,0 +1,9 @@
+package com.example.demo.util.validation;
+
+import java.util.Set;
+
+public class ValidationException extends RuntimeException {
+    public ValidationException(Set<String> errors) {
+        super(String.join("\n", errors));
+    }
+}

src/main/java/com/example/demo/util/validation/ValidatorUtil.java

@@ -0,0 +1,32 @@
+package com.example.demo.util.validation;
+
+import jakarta.validation.ConstraintViolation;
+import jakarta.validation.Validation;
+import jakarta.validation.Validator;
+import jakarta.validation.ValidatorFactory;
+import org.springframework.stereotype.Component;
+
+
+
+import java.util.Set;
+import java.util.stream.Collectors;
+
+@Component
+public class ValidatorUtil {
+    private final Validator validator;
+
+    public ValidatorUtil() {
+        try (ValidatorFactory factory = Validation.buildDefaultValidatorFactory()) {
+            this.validator = factory.getValidator();
+        }
+    }
+
+    public <T> void validate(T object) {
+        final Set<ConstraintViolation<T>> errors = validator.validate(object);
+        if (!errors.isEmpty()) {
+            throw new ValidationException(errors.stream()
+                    .map(ConstraintViolation::getMessage)
+                    .collect(Collectors.toSet()));
+        }
+    }
+}

src/main/resources/application.properties

@@ -1 +1,11 @@
 
+server.port=8080
+spring.datasource.url=jdbc:h2:file:./data
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=update
+spring.h2.console.enabled=true
+spring.h2.console.settings.trace=false
+spring.h2.console.settings.web-allow-others=false

src/main/resources/static/style.css

@@ -0,0 +1,25 @@
+body {
+    background: #f54d9a;
+}
+
+.logo {
+    background: #FF9CCE;
+}
+
+main {
+    padding: 2%;
+    margin: 10% 5%;
+}
+
+main img {
+    width: 100%;
+    object-fit: cover;
+}
+
+form {
+    padding: 1%;
+}
+
+.product-div {
+    background: #e874ac;
+}

src/main/resources/templates/Header.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+    <head>
+        <meta charset="UTF-8">
+        <title>Title</title>
+        <link rel="stylesheet" href="/style.css"/>
+        <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+              rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+              crossorigin="anonymous">
+        <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+                integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+                crossorigin="anonymous"></script>
+        <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+                integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+                crossorigin="anonymous"></script>
+    </head>
+    <body>
+    <header class="logo d-flex flex-wrap align-items-center justify-content-center
+       justify-content-md-between py-3 mb-4 border-bottom" th:fragment="header">
+        <a href="/" class="d-flex align-items-center col-md-3 mb-2 mb-md-0 text-dark text-decoration-none">
+            <svg class="bi me-2" width="40" height="32" role="img" aria-label="Bootstrap"><use xlink:href="#bootstrap"></use></svg>
+        </a>
+      <ul class="nav col-12 col-md-auto mb-2 justify-content-center mb-md-0">
+          <li th:if="${user.firstName != null}"><a href="/product/my_products" class="nav-link px-2 link-dark">My Products</a></li>
+          <li><a href="/product" class="nav-link px-2 link-dark">Products</a></li>
+          <li th:if="${user.firstName != null}"><a href="/order/masters_order" class="nav-link px-2 link-dark">Orders</a></li>
+      </ul>
+      <div th:if="${user.firstName != null}" class="col-md-3 text-end">
+        <a href="/order" class="btn btn-outline-primary me-2">Shop List</a>
+        <a href="/master" class="nav-link px-2 link-dark" th:text="${user.firstName + ' ' + user.lastName}">User Name</a>
+      </div>
+      <div th:unless="${user.firstName != null}" class="col-md-3 text-end">
+        <a href="/master/login" class="btn btn-outline-primary me-2">Login</a>
+        <a href="/master" class="btn btn-primary">Register</a>
+      </div>
+    </header>
+  </body>
+</html>

src/main/resources/templates/Login.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+    <meta charset="UTF-8">
+    <title>Login</title>
+  <link rel="stylesheet" href="/style.css"/>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+    <header th:insert="~{Header :: header}"></header>
+    <form method="post" th:object="${user}">
+        <div class="container">
+            <div class="row gy-5 p-2">
+                <input type="email"  name="email" class="form-control"
+                       id="email" placeholder="Email" th:field="*{email}">
+            </div>
+            <div class="row gy-5 p-2">
+                <input type="password" name="password" class="form-control"
+                       id="password" placeholder="Password" th:field="*{password}">
+            </div>
+            <div class="row gy-5">
+                <button type="submit" class="btn btn-primary">Sing In</button>
+            </div>
+            <div class="row gy-5 ">
+                <a href="/master/register" class="btn btn-primary">Register</a>
+            </div>
+        </div>
+    </form>
+</body>
+</html>

src/main/resources/templates/MastersOrders.html

@@ -0,0 +1,51 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+  <meta charset="UTF-8">
+  <title>Login</title>
+  <link rel="stylesheet" href="/style.css"/>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+<header th:insert="~{Header :: header}"></header>
+<div>
+  <h1 class="text-center">Masters</h1>
+
+  <div class="container">
+    <div class="row gy-5 p-2">
+      <form th:action="@{/order/masters_order}" method="get">
+        <select th:each="master : ${masters}" th:name="master_id" class="form-select" aria-label="Default select example">
+          <option th:id="master_id" th:value="${master.id}" >
+            <span th:text="${master.firstName + ' ' + master.lastName }"></span>
+          </option>
+        </select>
+        <button class="btn btn-primary w-100">Check</button>
+      </form>
+    </div>
+  </div>
+
+  <table class="table table-dark">
+    <thead>
+    <tr>
+      <th scope="col">#</th>
+      <th scope="col">Cost</th>
+    </tr>
+    </thead>
+    <tbody>
+    <tr th:each="order : ${orders}">
+      <th scope="row" th:text="${order.id}"></th>
+      <td th:text="${order.cost}"></td>
+    </tr>
+    </tbody>
+  </table>
+</div>
+</body>
+</html>

src/main/resources/templates/OrderPage.html

@@ -0,0 +1,48 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+  <meta charset="UTF-8">
+  <title>Login</title>
+  <link rel="stylesheet" href="/style.css"/>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+<header th:insert="~{Header :: header}"></header>
+<div>
+  <h1 class="text-center">Order</h1>
+  <form method="post" th:object="${order}">
+    <div class="container">
+      <div th:each="product : ${order.products}"  class="row product-div p-2 m-2">
+        <input type="hidden" name="id_item" th:name="id" th:value="${product.id}">
+        <div class="col">
+          <h2 th:text="${product.name}"></h2>
+        </div>
+        <div class="col">
+          <h3 th:text="${product.cost} + '$'"></h3>
+        </div>
+        <div class="col">
+          <button name="action" value="delete" class="btn btn-primary w-100 h-100 text-lg-center">Delete</button>
+        </div>
+      </div>
+      <div class="row">
+        <div class="col">
+          <h2 th:text="${fullCost} + '$'"></h2>
+        </div>
+        <div class="col">
+          <h3><button name="action" value="buy" class="btn btn-primary w-100">Buy</button>
+          </h3>
+        </div>
+      </div>
+    </div>
+  </form>
+</div>
+</body>
+</html>

src/main/resources/templates/ProductCreate.html

@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+    <meta charset="UTF-8">
+    <title>Login</title>
+  <link rel="stylesheet" href="/style.css"/>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+    <header th:insert="~{Header :: header}"></header>
+    <div>
+        <form method="post" th:object="${product}">
+            <input type="text" th:field="*{name}" th:value="${product.getName()}" name="name" class="form-control" id="name">
+            <input type="number" th:field="*{cost}" th:value="${product.getCost()}" name="cost" class="form-control" id="cost">
+            <button type="submit" class="btn btn-primary" th:text="${buttonText}">Add</button>
+        </form>
+    </div>
+</body>
+</html>

src/main/resources/templates/Products.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+  <link rel="stylesheet" href="/style.css"/>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+    <header th:insert="~{Header :: header}"></header>
+
+    <div class="container">
+        <div th:each="item : ${products}" class="row product-div p-2 m-2">
+            <form method="post" th:object="${item}" >
+                <input type="hidden" th:name="id" th:value="${item.getId()}">
+                <div class="col">
+                    <h2 th:text="${item.getName()}" th:name="*{name}"></h2>
+                </div>
+                <div class="col">
+                    <h3 th:text="${item.getCost()} + '$'" th:name="*{cost}"></h3>
+                </div>
+                <div class="col">
+                    <button type="submit" class="btn btn-primary w-100">Buy</button>
+                </div>
+            </form>
+        </div>
+    </div>
+
+</body>
+</html>

src/main/resources/templates/UserPage.html

@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+  <link rel="stylesheet" href="/style.css"/>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+    <header th:insert="~{Header :: header}"></header>
+    <form method="post" th:object="${user}">
+        <div class="container">
+            <div class="row gy-5 p-2">
+                <input type="text" name="name" class="form-control"
+                       id="name" placeholder="Name" th:value="${user.firstName}" th:field="*{firstName}">
+            </div>
+            <div class="row gy-5 p-2">
+                <input type="text"  name="surname" class="form-control"
+                       id="surname" placeholder="Surname" th:value="${user.lastName}" th:field="*{lastName}">
+            </div>
+            <div class="row gy-5 p-2">
+                <input type="email"  name="email" class="form-control"
+                       id="email" placeholder="Email" th:value="${user.email}" th:field="*{email}">
+            </div>
+            <div class="row gy-5 p-2">
+                <input type="password" name="password" class="form-control"
+                       id="password" placeholder="Password" th:value="${user.password}" th:field="*{password}">
+            </div>
+            <div th:if='${user.firstName != null}' class="row align-items-start">
+                <div class="col">
+                    <button name="action" class="btn btn-primary w-100" value="update">Update</button>
+                </div>
+                <div class="col">
+                    <button name="action" th:onclick="/master/log_out"
+                            class="btn btn-primary w-100" value="log_out">Log Out</button>
+                </div>
+            </div>
+            <div th:unless='${user.firstName != null}' class="row gy-5">
+                <button name="action" value="register" class="btn btn-primary w-100">Register</button>
+            </div>
+            <div th:unless='${user.firstName != null}' class="row align-items-start">
+                <a href="/sing_in" class="btn btn-primary">Sing In</a>
+            </div>
+        </div>
+    </form>
+</body>
+</html>

src/main/resources/templates/UserProducts.html

@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+  <link rel="stylesheet" href="/style.css"/>
+    <a></a>
+  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/css/bootstrap.min.css"
+        rel="stylesheet" integrity="sha384-KK94CHFLLe+nY2dmCWGMq91rCGa5gtU4mk92HdvYe+M/SXH301p5ILy+dN9+nJOZ"
+        crossorigin="anonymous">
+  <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.7/dist/umd/popper.min.js"
+          integrity="sha384-zYPOMqeu1DAVkHiLqWBUTcbYfZ8osu1Nd6Z89ify25QV9guujx43ITvfi12/QExE"
+          crossorigin="anonymous"></script>
+  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha3/dist/js/bootstrap.min.js"
+          integrity="sha384-Y4oOpwW3duJdCWv5ly8SCFYWqFDsfob/3GkgExXKV4idmbt98QcxXYs9UoXAB7BZ"
+          crossorigin="anonymous"></script>
+</head>
+<body style="background: #f54d9a">
+    <header th:insert="~{Header :: header}"></header>
+    <div class="container">
+        <div class="row align-content-center">
+            <a href="/product/create_product" class="btn btn-primary w-100 h-100 text-lg-center">Create</a>
+        </div>
+        <div th:each="item : ${products}" class="row product-div p-2 m-2">
+            <div class="col">
+                <h2 th:text="${item.name}"></h2>
+            </div>
+            <div class="col">
+                <h3 th:text="${item.cost} + '$'"></h3>
+            </div>
+            <div class="col">
+                <a th:href="'/product/update_product/' + ${{item.id}}" class="btn btn-primary w-100 h-100 text-lg-center">Edit</a>
+            </div>
+        </div>
+    </div>
+</body>
+</html>

src/test/java/com/example/demo/Demo1ApplicationTests.java

@@ -1,13 +0,0 @@
-package com.example.demo;
-
-import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
-
-@SpringBootTest
-class Demo1ApplicationTests {
-
-	@Test
-	void contextLoads() {
-	}
-
-}

src/test/java/com/example/demo/DemoApplicationTests.java

@@ -0,0 +1,133 @@
+//package com.example.demo;
+//
+//import jakarta.persistence.EntityNotFoundException;
+//import org.junit.jupiter.api.Assertions;
+//import org.junit.jupiter.api.Test;
+//import org.springframework.beans.factory.annotation.Autowired;
+//import org.springframework.boot.test.context.SpringBootTest;
+//import com.example.demo.order.*;
+//import com.example.demo.master.*;
+//import com.example.demo.product.*;
+//
+//import java.util.List;
+//
+//@SpringBootTest
+//class DemoApplicationTests {
+//
+//    @Autowired
+//    private MasterService masterService;
+//    @Autowired
+//    private ProductService productService;
+//    @Autowired
+//    private OrderService orderService;
+//
+//    @Test
+//    void testOrder() {
+//        productService.deleteAllProducts();
+//        orderService.deleteAllOrders();
+//        masterService.deleteAllMasters();
+//
+//        final Product product1 = productService.addProduct("Машинка", 300);
+//        final Product product2 = productService.addProduct("Ключ", 200);
+//
+//        final Master master1 = masterService.addMaster("Кирилл", "Петрович");
+//
+//        final Order order0 = orderService.addOrder(masterService.findMaster(master1.getId()));
+//        final Order order1 = orderService.findOrder(order0.getId());
+//        Assertions.assertEquals(order0, order1);
+//
+//        Assertions.assertEquals(masterService
+//                .findMaster(master1.getId()).getOrders().size(), 1);
+//        orderService.deleteAllOrders();
+//        Assertions.assertThrows(EntityNotFoundException.class, () -> orderService.findOrder(-1L));
+//        final Master customer2 = masterService.addMaster("Александр", "Игоревич");
+//        final Order order2 = orderService
+//                .addOrder(masterService.findMaster(customer2.getId()));
+//        orderService.addProduct(order2.getId(), product1);
+//        orderService.addProduct(order2.getId(), product1);
+//        orderService.deleteProductsInOrder(order2.getId(), product1);
+//
+//        Assertions.assertEquals(orderService
+//                .findOrder(order2.getId()).getProducts().size(), 1);
+//        masterService.deleteMaster(customer2.getId());
+//        Assertions.assertThrows(EntityNotFoundException.class, () -> masterService.findMaster(customer2.getId()));
+//        Assertions.assertThrows(EntityNotFoundException.class, () -> orderService.findOrder(order2.getId()));
+//        Assertions.assertEquals(orderService.findAllOrders().size(), 0);
+//    }
+//
+//    @Test()
+//    void testMaster() {
+//        masterService.deleteAllMasters();
+//        final Master customer = masterService.addMaster("Иван", "Иванов");
+//        Assertions.assertNotNull(customer.getId());
+//
+//        masterService.deleteAllMasters();
+//        final Master customer1 = masterService.addMaster("Иван", "Иванов");
+//        final Master findMaster = masterService.findMaster(customer1.getId());
+//        Assertions.assertEquals(customer1, findMaster);
+//
+//        masterService.deleteAllMasters();
+//        Assertions.assertThrows(EntityNotFoundException.class, () -> masterService.findMaster(-1L));
+//
+//        masterService.deleteAllMasters();
+//        masterService.addMaster("Иван", "Иванов");
+//        masterService.addMaster("Петр", "Петров");
+//        final List<Master> customers1 = masterService.findAllMasters();
+//        Assertions.assertEquals(customers1.size(), 2);
+//
+//        masterService.deleteAllMasters();
+//        final List<Master> customers2 = masterService.findAllMasters();
+//
+//        Assertions.assertEquals(customers2.size(), 0);
+//    }
+//
+//    @Test
+//    void testProduct() {
+//        productService.deleteAllProducts();
+//        final Product ticket1 = productService.addProduct("Руно", 100);
+//        Assertions.assertNotNull(ticket1.getId());
+//
+//        productService.deleteAllProducts();
+//        final Product ticket2 = productService.addProduct("Шоколад", 100);
+//        final Product findProduct = productService.findProduct(ticket2.getId());
+//        Assertions.assertEquals(ticket2, findProduct);
+//
+//        productService.deleteAllProducts();
+//        Assertions.assertThrows(EntityNotFoundException.class, () -> productService.findProduct(-1L));
+//
+//        productService.deleteAllProducts();
+//        productService.addProduct("Автомобиль", 100);
+//        productService.addProduct("Мячик", 100);
+//        final List<Product> tickets1 = productService.findAllProducts();
+//        Assertions.assertEquals(tickets1.size(), 2);
+//
+//        productService.deleteAllProducts();
+//        final List<Product> tickets2 = productService.findAllProducts();
+//        Assertions.assertEquals(tickets2.size(), 0);
+//    }
+//
+//    @Test
+//    void testCommand() {
+//        productService.deleteAllProducts();
+//        orderService.deleteAllOrders();
+//        masterService.deleteAllMasters();
+//
+//        final Product product1 = productService.addProduct("Машинка", 300);
+//        final Product product2 = productService.addProduct("Ключ", 200);
+//
+//        final Master master1 = masterService.addMaster("Кирилл", "Петрович");
+//        final Master master2 = masterService.addMaster("Александр", "Камугович");
+//
+//        final Order order0 = orderService.addOrder(masterService.findMaster(master1.getId()));
+//        final Order order1 = orderService.addOrder(masterService.findMaster(master2.getId()));
+//        final Order order2 = orderService.addOrder(masterService.findMaster(master2.getId()));
+//        orderService.addProduct(order0.getId(), product1);
+//        orderService.addProduct(order1.getId(), product1);
+//        orderService.addProduct(order2.getId(), product1);
+//
+//        Assertions.assertTrue(orderService.findOrdersWithProduct(master1.getId(), product1).contains(order0));
+//        Assertions.assertTrue(orderService.findOrdersWithProduct(master1.getId(), product2).isEmpty());
+//        Assertions.assertTrue(orderService.findOrdersWithProduct(master2.getId(), product1).contains(order1)
+//                && orderService.findOrdersWithProduct(master2.getId(), product1).contains(order2));
+//    }
+//}

src/test/resources/application.properties

@@ -0,0 +1,6 @@
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
+spring.jpa.hibernate.ddl-auto=create-drop