pom文件依赖
<properties>
<java.version>1.8</java.version>
<org.mapstruct.version>1.2.0.Final</org.mapstruct.version>
<lombok.version>1.18.10</lombok.version>
</properties>
<dependency>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-jdk8</artifactId>
<version>${org.mapstruct.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.7.0</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${org.mapstruct.version}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${lombok.version}</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
实体类对象
GoodTypeBean 对象:
package com.example.demo.pojo;
import lombok.Data;
@Data
public class GoodTypeBean {
private Long id;
private String name;
private int show;
private int order;
}
GoodInfoDTO2:
package com.example.demo.pojo;
import lombok.Data;
import lombok.ToString;
@Data
@ToString
public class GoodInfoDTO {
//商品编号
private String goodId;
//商品名称
private String goodName;
//商品价格
private double goodPrice;
//类型名称
private String typeName;
}
对象转换mapper类
GoodInfoMapper 将从GoodTypeBean 转换到GoodInfoDTO
package com.example.demo.test;
import com.example.demo.pojo.GoodInfoDTO;
import com.example.demo.pojo.GoodTypeBean;
import org.mapstruct.Mapper;
import org.mapstruct.Mapping;
import org.mapstruct.Mappings;
import org.mapstruct.factory.Mappers;
@Mapper(componentModel = "spring")
public interface GoodInfoMapper {
GoodInfoMapper INSTANCE = Mappers.getMapper(GoodInfoMapper.class);
@Mappings({
@Mapping(source = "name", target = "typeName"),
@Mapping(source = "id", target = "goodId")
})
public GoodInfoDTO from(GoodTypeBean type);
}
测试
package com.example.demo;
import com.example.demo.pojo.GoodInfoDTO;
import com.example.demo.pojo.GoodTypeBean;
import com.example.demo.test.GoodInfoMapper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest(classes = DemoApplication.class)
class DemoApplicationTests {
@Autowired
private GoodInfoMapper goodInfoMapper;
@Test
void contextLoads() {
GoodTypeBean goodTypeBean = new GoodTypeBean();
goodTypeBean.setId(0L);
goodTypeBean.setName("hello");
goodTypeBean.setShow(0);
goodTypeBean.setOrder(0);
GoodInfoDTO from = goodInfoMapper.from(goodTypeBean);
System.out.println(from);
}
}