MapStruct使用

Java对象转换框架

引入配置

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<properties>
    <org.mapstruct.version>1.5.5.Final</org.mapstruct.version>
</properties>
<dependency>
    <groupId>org.mapstruct</groupId>
    <artifactId>mapstruct</artifactId>
    <version>${org.mapstruct.version}</version>
</dependency>
<dependency>
    <groupId>org.mapstruct</groupId>
    <artifactId>mapstruct-jdk8</artifactId>
    <version>${org.mapstruct.version}</version>
</dependency>
<dependency>
    <groupId>org.mapstruct</groupId>
    <artifactId>mapstruct-processor</artifactId>
    <version>${org.mapstruct.version}</version>
</dependency>

定义

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@Data
@SuperBuilder
@AllArgsConstructor
@NoArgsConstructor
@EqualsAndHashCode
public class BaseEntity implements Serializable {
    @ApiModelProperty(value = "主键id")
    private Long id;

    @ApiModelProperty(value = "创建时间")
    private Date createTime;

    @ApiModelProperty(value = "更新时间")
    private Date updateTime;

    @ApiModelProperty(value = "删除标记 0未删除 1已删除")
    private Integer isDeleted;
}

@Data
@SuperBuilder
@AllArgsConstructor
@NoArgsConstructor
@EqualsAndHashCode
public class BaseBO implements Serializable {
    @ApiModelProperty(value = "主键id")
    private Long id;

    @ApiModelProperty(value = "创建时间")
    private Date createTime;

    @ApiModelProperty(value = "删除")
    private String delFlag;
}
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import com.java.template.biz.bean.bo.BaseBO;
import com.java.template.dal.entity.BaseEntity;
import org.mapstruct.Mapper;
import org.mapstruct.Mapping;

@Mapper(componentModel = "spring")
public interface IBaseEntityConvert {

    @Mapping(target = "delFlag", expression = "java(deal(entity.getIsDeleted()))")
    BaseBO toBO(BaseEntity entity);

    default String deal(Integer isDeleted) {
        return isDeleted == 1 ? "已删除" : "未删除";
    }
}

使用

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@SpringBootTest
public class T {
    
    @Resource
    private IBaseEntityConvert baseEntityConvert;

    @Test
    void t(){
        BaseEntity build = BaseEntity.builder().id(1L).createTime(DateUtil.date()).isDeleted(2).build();
        BaseEntity build2 = BaseEntity.builder().id(3L).createTime(DateUtil.date()).isDeleted(1).build();
        System.out.println(baseEntityConvert.toBO(build));
        System.out.println(baseEntityConvert.toBO(build2));
    }
}

// 输出
// BaseBO(id=1, createTime=2023-11-03 11:46:53, delFlag=未删除)
// BaseBO(id=3, createTime=2023-11-03 11:46:53, delFlag=已删除)

其他

IDEA装插件MapStruct Support可以有代码提示功能

参考文档

相关文章

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