【发布时间】：2019-07-17 12:52:46
【问题描述】：
我尝试在我的 Spring 项目中添加 mapstruct 映射器。
我有一个用户实体。我需要在管理面板中显示用户列表。为此，我做了 DTO UserForAdmin、映射器 UserMapper 和休息控制器 AdminRestController。当我尝试获取 UserMapper 时出现错误。
我尝试了两种方法：
- Mappers.getMapper(UserMapper.class)
我得到错误
java.lang.ClassNotFoundException：找不到实现 ru.project.mapper.UserMapper
- 自动接线
我收到错误
启动 ApplicationContext 时出错。显示条件报告 在启用“调试”的情况下重新运行您的应用程序。 2019-07-17 15:47:07.886 错误 13652 --- [restartedMain] o.s.b.d.LoggingFailureAnalysisReporter：
***************************应用程序启动失败
说明：
ru.project.controller.rest.AdminRestController 中的字段 userMapper 需要一个 'ru.project.mapper.UserMapper' 类型的 bean，它不能 找到了。
注入点有以下注解： - @org.springframework.beans.factory.annotation.Autowired(required=true)
行动：
考虑定义一个“ru.project.mapper.UserMapper”类型的bean 你的配置。
这是我的源代码。
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.6.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>ru.project</groupId>
<artifactId>project</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>project</name>
<description>The project is project of resourse for investors.</description>
<properties>
<java.version>12</java.version>
<org.mapstruct.version>1.3.0.Final</org.mapstruct.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity5</artifactId>
</dependency>
<dependency>
<groupId>org.modelmapper</groupId>
<artifactId>modelmapper</artifactId>
<version>2.3.5</version>
</dependency>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct</artifactId>
<version>${org.mapstruct.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<annotationProcessorPaths>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</path>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>
我的界面UserMapper：
package ru.project.mapper;
import java.util.List;
import org.mapstruct.Mapper;
import ru.project.domain.User;
import ru.project.dto.UserForAdmin;
@Mapper
//@Mapper(componentModel = "spring")
public interface UserMapper {
UserForAdmin UserToUserForAdmin(User user);
List<UserForAdmin> UserListToUserForAdminList(List<User> user);
}
我的 RestController：
package ru.project.controller.rest;
import java.util.List;
import org.mapstruct.factory.Mappers;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import ru.project.dto.UserForAdmin;
import ru.project.mapper.UserMapper;
import ru.project.service.UserService;
@RestController
public class AdminRestController {
@Autowired
private UserService userService;
//@Autowired
//private UserMapper userMapper;
@GetMapping("/admin/users")
public List<UserForAdmin> findAllUsers(){
UserMapper userMapper = Mappers.getMapper(UserMapper.class);
return userMapper.UserListToUserForAdminList(userService.findAll());
}
}
我想使用 Awtowired。
【问题讨论】：
标签： spring autowired spring-restcontroller mapper mapstruct