1.mybatis-plus 版本
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< dependency > < groupId >com.github.jeffreyning</ groupId > < artifactId >mybatisplus-plus</ artifactId > < version >1.5.1-RELEASE</ version > </ dependency > < dependency > < groupId >com.baomidou</ groupId > < artifactId >mybatis-plus-boot-starter</ artifactId > < version >3.1.0</ version > </ dependency > < dependency > < groupId >com.baomidou</ groupId > < artifactId >mybatis-plus-generator</ artifactId > < version >3.1.0</ version > </ dependency > |
2.实体类
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@TableName ( "etl_job" ) public class Job implements Serializable {
private static final long serialVersionUID=1L;
@MppMultiId // 复合主键 private String etlSystem;
@MppMultiId // 复合主键 private String etlJob; } |
3.Mapper类和mapper.xml
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public interface JobMapper extends MppBaseMapper<Job> {
} |
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< resultMap id = "BaseResultMap" type = "com.dd.study.beans.Job" > < id column = "etl_system" property = "etlSystem" /> < id column = "etl_job" property = "etlJob" /> </ resultMap > |
4.Server和ServiceImpl
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public interface JobService extends IMppService<Job> { } |
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@Service public class JobServiceImpl extends MppServiceImpl<JobMapper, Job> implements JobService { } |
5.接下来就是正式应用复合主键相关的操作了
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jobService.saveOrUpdateByMultiId(job); |
6.想要启动复合主键，还要记得在启动类加上@EnableMPP。
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原文链接：https://blog.csdn.net/ypf2019/article/details/121286701
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