Mybatis与Jpa的区别和性能对比总结

<dependency>
	<groupId>org.mybatis.spring.boot</groupId>
	<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
	<groupId>Mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

@Data
public class TestMybatis {
    private Long id;
    
    private String userId;
    
    private String mainMetric;
    
    private String subMetric;
    
    private String metricItem;
}
@SuppressWarnings("serial")
@javax.persistence.Entity
@javax.persistence.Table(name = "test")
@lombok.Data
public class TestJpa {
    @javax.persistence.Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    
    private String userId;
    
    private String mainMetric;
    
    private String subMetric;
    
    private String metricItem;
}

@Repository
public interface TestRee extends JpaRepository<TestRe, String> {

}

<insert id="insertList">
    insert into test(user_id,main_metric, sub_metric, metric_item) values
    <foreach collection="param" item="item" separator=",">
            (#{item.userId}, #{item.mainMetric}, #{item.subMetric}, #{item.metricItem})
    </foreach>
</insert>

@Slf4j
@RunWith(SpringRunner.class)
@SpringBootTest(classes = {ColaDemoApplication.class})
class ColaDemoApplicationTests {
    @Autowired
    private TestRee testRee;
    @Autowired
    private MetricMapper metricMapper;

    @Test
    void contextLoads() {
        List<TestJpa> jpaList = new ArrayList<>(1000);
        List<com.kakki.colademo.gatewayimpl.database.dataobject.TestMybatis> mybatisList = new ArrayList<>(1000);
        for (int i = 0; i < 1000; i++) {
            TestJpa testJpa = new TestJpa();
            testJpa.setMainMetric(String.fORMat("mainMetric%d", i));
            testJpa.setSubMetric(String.format("subMetric%d", i));
            testJpa.setUserId(String.format("userId%d", i));
            testJpa.setMetricItem(String.format("metricItem%d", i));
            jpaList.add(testRe);
            com.kakki.colademo.gatewayimpl.database.dataobject.TestMybatis testMybatis = new com.kakki.colademo.gatewayimpl.database.dataobject.TestMybatis();
            testMybatis.setMainMetric(String.format("mainMetric%d", i));
            testMybatis.setSubMetric(String.format("subMetric%d", i));
            testMybatis.setUserId(String.format("userId%d", i));
            testMybatis.setMetricItem(String.format("metricItem%d", i));
            mybatisList.add(testR);
        }
        StopWatch jpa = new StopWatch();
        jpa.start();
        testRee.saveAll(jpaList);
        jpa.stop();
        log.info("[jpa]{}ms", jpa.getTotalTimeMillis());

        StopWatch m = new StopWatch();
        m.start();
        metricMapper.insertList(mybatisList);
        m.stop();
        log.info("[m]{}ms", m.getTotalTimeMillis());

    }

}

    @Transactional
	@Override
	public <S extends T> List<S> saveAll(Iterable<S> entities) {

		Assert.notNull(entities, "Entities must not be null!");

		List<S> result = new ArrayList<S>();

		for (S entity : entities) {
			result.add(save(entity));
		}

		return result;
	}
    @Transactional
	@Override
	public <S extends T> S save(S entity) {

		if (entityInformation.isNew(entity)) {
			em.persist(entity);
			return entity;
		} else {
			return em.merge(entity);
		}
	}

spring.jpa.properties.hibernate.jdbc.batch_size=10000
spring.jpa.properties.hibernate.jdbc.batch_versioned_data=true
spring.jpa.properties.hibernate.order_inserts=true
spring.jpa.properties.hibernate.order_updates=true