java 使用Gradle和Mapstruct以及Lombok和Sping Boot 时出现问题(没有Map器的实现)

fdbelqdn  于 2023-04-28  发布在  Java
关注(0)|答案(4)|浏览(163)

我正在使用Gradle和Lombok以及Sping Boot 和Mapstruct。由于某种原因，我的绘图仪不工作了。它说，它找不到Map器的实现。
我已经尝试过将Mapstruct添加到Gradle构建中的不同方法。也许我还是输入错了？
在搜索堆栈溢出时，我找到了几个类似情况的答案，但没有一个适合我。
不管怎样，这是我的代码：

本身.Java：

package de.derandy.meinkochtopf.model;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import lombok.ToString;

@Entity
@Getter
@Setter
@ToString
@NoArgsConstructor
@RequiredArgsConstructor
@Table(name = "einheit")
public class Einheit {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(unique = true)
    private Long id;
    @NonNull
    private String name;

}

EinheitDto.Java：

package de.derandy.meinkochtopf.model;

import javax.persistence.Column;

import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import lombok.Setter;
import lombok.ToString;

@Getter
@Setter
@ToString
@NoArgsConstructor
@RequiredArgsConstructor
public class EinheitDto {

    @Column
    private Long id;
    @NonNull
    private String name;
}

EinheitMapper。Java：

package de.derandy.meinkochtopf.mapper;

import org.mapstruct.Mapper;
import org.mapstruct.factory.Mappers;
import org.springframework.stereotype.Component;

import de.derandy.meinkochtopf.model.Einheit;
import de.derandy.meinkochtopf.model.EinheitDto;

@Mapper(componentModel = "spring")
@Component
public interface EinheitMapper {

    EinheitMapper INSTANCE = Mappers.getMapper(EinheitMapper.class);
    
    
     Einheit einheitDtoToEinheit(EinheitDto dto);
     EinheitDto einheitToEinheitDto(Einheit einheit);

}

build.gradle：

plugins {
    id 'org.springframework.boot' version '2.6.3'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
    id "com.diffplug.eclipse.apt" version "3.26.0"
}

group = 'de.derandy'
version = '1.0'
sourceCompatibility = '17'

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}

repositories {
    mavenCentral()
}

dependencies {
    // Spring boot
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    // Lombok
    compileOnly 'org.projectlombok:lombok'  
    annotationProcessor 'org.projectlombok:lombok'
    // H2
    runtimeOnly 'com.h2database:h2'
    // Test
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    // Mapstruct
    compile 'org.mapstruct:mapstruct:1.4.2.Final'
    annotationProcessor 'org.mapstruct:mapstruct-processor:1.4.2.Final'
    testAnnotationProcessor 'org.mapstruct:mapstruct-processor:1.4.2.Final' 
}
}

tasks.named('test') {
    useJUnitPlatform()
}

应用程序。属性：

spring.datasource.url=jdbc:h2:mem:testdb
spring.datasource.driverClassName=org.h2.Driver
spring.datasource.username=sa
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
spring.h2.console.enabled=true
server.error.include-message=always
spring.banner.location=banner.txt

堆栈跟踪：

org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.ExceptionInInitializerError
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1082)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:72)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
    at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:167)
    at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
    at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:199)
    at de.derandy.meinkochtopf.controller.EinheitControllerTest.testGetEinheits_fails(EinheitControllerTest.java:50)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)
    at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
    at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
    at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:95)
    at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:91)
    at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:60)
    at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:98)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: java.lang.ExceptionInInitializerError
    at de.derandy.meinkochtopf.controller.EinheitController.getEinheiten(EinheitController.java:42)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:568)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
    ... 80 more
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Cannot find implementation for de.derandy.meinkochtopf.mapper.EinheitMapper
    at org.mapstruct.factory.Mappers.getMapper(Mappers.java:61)
    at de.derandy.meinkochtopf.mapper.EinheitMapper.<clinit>(EinheitMapper.java:14)
    ... 92 more
Caused by: java.lang.ClassNotFoundException: Cannot find implementation for de.derandy.meinkochtopf.mapper.EinheitMapper
    at org.mapstruct.factory.Mappers.getMapper(Mappers.java:75)
    at org.mapstruct.factory.Mappers.getMapper(Mappers.java:58)
    ... 93 more

**更新：**我这样修改了我的Map器：

@Mapper
public interface EinheitMapper {

    
    @Mapping(target = "id", source = "id")
    @Mapping(target = "name", source = "name")
    Einheit einheitDtoToEinheit(EinheitDto dto);

    @Mapping(target = "id", source = "id")
    @Mapping(target = "name", source = "name")
    EinheitDto einheitToEinheitDto(Einheit einheit);

}

现在，如果我用gradle构建它，它就可以工作，但它在Spring工具套件中不起作用

Java

4条答案

按热度按时间
bxjv4tth

bxjv4tth1#

所以，作为一种变通方法，我迁移到了maven，现在它工作了。似乎不知何故，我的Spring工具套件中的Gradle没有正确工作。

赞(0）分享  回复(0）举报  2023-04-28
ubbxdtey

ubbxdtey2#

为了使Lombok和Mapstruct一起工作，你需要Lombok插件。
Lombok plugin io.freefair.lombok插件是必需的.
以下是我的工作配置：

plugins {
    id "io.freefair.lombok" version "6.5.0-rc1"
}

dependencies {
    compileOnly "org.projectlombok:lombok:1.18.24"
    annotationProcessor "org.projectlombok:lombok:1.18.24"
    testCompileOnly "org.projectlombok:lombok:1.18.24"
    testAnnotationProcessor "org.projectlombok:lombok:1.18.24"
  
    compileOnly "org.mapstruct:mapstruct:1.5.1.Final"
    testCompileOnly "org.mapstruct:mapstruct:1.5.1.Final"
    annotationProcessor "org.mapstruct:mapstruct-processor:1.5.1.Final"
    testAnnotationProcessor "org.mapstruct:mapstruct- processor:1.5.1.Final"
    implementation 'org.projectlombok:lombok-mapstruct-binding:0.2.0'
}
赞(0）分享  回复(0）举报  2023-04-28
2mbi3lxu

2mbi3lxu3#

您将丢失您愿意在EinheitMapper中Map的属性。Java也不需要@Column。
我相信你想做Dto到Entity类的Map，反之亦然。
如果要保存从实体到dto的逆Map时间，可以用途：

@InheritInverseConfiguration

所以你的mapper应该看起来像这样：

@Mapping(target = "id", source = "id")
@Mapping(target = "name", source = "name")
Einheit einheitDtoToEinheit(EinheitDto dto);

@InheritInverseConfiguration
@Mapping(target = "eventCategory", source = "eventCategory")
赞(0）分享  回复(0）举报  2023-04-28
vu8f3i0k

vu8f3i0k4#

依赖顺序对于使lombok和mapStruct一起工作非常重要，这是我的依赖顺序

implementation "org.projectlombok:lombok:1.18.26"
    annotationProcessor "org.projectlombok:lombok:1.18.20"
    annotationProcessor "org.projectlombok:lombok-mapstruct-binding:0.2.0"

    implementation "org.mapstruct:mapstruct:1.5.5.Final"
    annotationProcessor "org.mapstruct:mapstruct-processor:1.5.5.Final"
赞(0）分享  回复(0）举报  2023-04-28
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