springboot jpa手动事务

创建springboot项目

搭建最简单的SpringBoot项目_Steven-Russell的博客-CSDN博客

引入jpa和数据据依赖

    org.springframework.boot
    spring-boot-starter-data-jpa


    mysql
    mysql-connector-java
    8.0.33

    org.projectlombok
    lombok
    1.18.28
    provided

创建实体类

@Data
@Entity
@Table(name = "tbl_user")
public class User {

    @Id
    @Column
    @GeneratedValue
    private int id;

    @Column
    private String name;

    @Column
    private String addr;

    @UpdateTimestamp
    @Column
    private Date updateTime;
}

创建Repository

public interface UserRepository extends CrudRepository {
     @Transactional
     @Modifying
     int deleteAllByNameIn(@Param(value = "nameList") List nameList);
}

创建controller 并且注入 事务管理器和Repository

注意：需要注入 PlatformTransactionManager

创建数据

构建异常

@GetMapping(value = "transactional")
public String transactionalUser() {
    DefaultTransactionDefinition transDefinition = new DefaultTransactionDefinition();
    transDefinition.setPropagationBehavior(DefaultTransactionDefinition.PROPAGATION_REQUIRES_NEW);
    TransactionStatus transStatus = transactionManager.getTransaction(transDefinition);
    try {
        deleteUser4Transactional();
        addUser4Transactional();
        transactionManager.commit(transStatus);
    } catch (Exception e) {
        e.printStackTrace();
        transactionManager.rollback(transStatus);
    }

    return "success";
}

private void addUser4Transactional() {
    int i = 1;
    int ans = i/0;
    User user = new User();
    user.setName("addUser4TransactionalName");
    user.setAddr("chongqing");
    userRepository.save(user);
}

private void deleteUser4Transactional() {
    List nameList = new ArrayList(){{
        add("aaa");
        add("ccc");
    }};
    int ans = userRepository.deleteAllByNameIn(nameList);
    System.out.println("deleteUser4Transactional ans : " + ans);
}

调用接口（预期回滚）

如下所示，数据没有变化

删除事务管理器

构建异常

调用接口（异常之前的操作被正常提交，并没有被回滚）

发现数据已经被删除，但是异常之后的添加操作并没有生效提交