对象之间的转换（mapstruct）

对象之间的转换

1、在maven中引入jar包

     <!--对象转换-->
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct</artifactId>
            <version>1.1.0.Final</version>
        </dependency>

        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-processor</artifactId>
            <version>1.1.0.Final</version>
            <scope>provided</scope>
        </dependency>    

2、创建一个接口专门实现对象进行转换

@Mapper
public interface IContractBean {
    IContractBean INSTANCE = Mappers.getMapper(IContractBean.class);

    Contract contract(SaveContractDTO saveContactDTO);

    ContractGood contractGood(GoodDTO goodDTO);

    List<ContractGood> contractGood(List<GoodDTO> goodDTOList);

  @Mappings({
            @Mapping(source = "terminationTime", target = "endTime"),
    })
    ContractAssistVO relationVO(ContractRelationAssist relationAssist);
    Page<ContractAssistVO> relationVO(Page<ContractRelationAssist> relationAssistPage);  
}

　　如果是List对象互相转换，那么需要先设置List里面的对象先进行转换

ContractGood contractGood(GoodDTO goodDTO);

List<ContractGood> contractGood(List<GoodDTO> goodDTOList);

　　如果对象里面的属性不一致，需要进行转换，则使用@Mappings注解

//将 terminationTime 转成 endTime对象
@Mappings({
            @Mapping(source = "terminationTime", target = "endTime"),
    })
    ContractAssistVO relationVO(ContractRelationAssist relationAssist);
    Page<ContractAssistVO> relationVO(Page<ContractRelationAssist> relationAssistPage);

　　

3、实现类进行使用

 GoodVO goodVO = IContractBean.INSTANCE.contractGoodVO(contractGood);
        List<GoodVO> goodVOList = IContractBean.INSTANCE.contractGoodVO(goodList);