mapstruct使用

一、maven依赖

    <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-jdk8</artifactId>
            <version>1.3.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-processor</artifactId>
            <version>1.3.1.Final</version>
        </dependency>

二、plugin插件

<plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>1.3.1.Final</version>
                        </path>
                        <path>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                            <version>1.18.12</version>
                        </path>
                    </annotationProcessorPaths>
                </configuration>
            </plugin>

注意：lombok插件必须同时配置，如果你使用了lombok插件的话

三、DTO以及DO定义

@Data
@AllArgsConstructor
@NoArgsConstructor
public class UserDO {
    private Integer useId;
    private String useName;
    private String useSex;
    private Integer useAge;
    private String userMovie;
}

@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class UserDto {
    private String useName;
    private String age;
    private String movie;
}

四、mapper定义

@Mapper
public interface ModelConvertor {
    ModelConvertor INSTANCE = Mappers.getMapper(ModelConvertor.class);
    /**
     * UserDO->userDTO
     * @param user userDO模型
     * @return userDTO实体对象
     */
    @Mappings({
            @Mapping(target = "age", source = "useAge"),
            @Mapping(target = "movie", source = "userMovie")
    })
    UserDto toUser(UserDO user);
}

五、使用

@RestController
@RequestMapping("/user")
@Slf4j
public class UseController {
    
    @PostMapping("/console")
    public ResultDTO<UserDto> queryUser(@RequestBody UserDto userDto) {
        return ResultDTO.success(userDto);
    }
    @PostMapping("/test")
    public ResultDTO<UserDto> test(@RequestBody User user) {
        UserDto userDto = ModelConvertor.INSTANCE.toUser(user);
        return ResultDTO.success(userDto);
    }
}