mybatis事务回滚配置操作

SqlSession session = sqlSessionFactory.openSession(false);
  Connection cOnn= session.getConnection();
  conn.setAutoCommit(false);
  try {
   UserMapper mapper = session.getMapper(UserMapper.class);
   for (String name : names) {
     //各种操作
    User user = new User();
    user.setName(name);
    //插入，需要回滚
    mapper.insert(user);
   }
   conn.commit();
  } catch (Exception e) {
   //有重复回滚
   conn.rollback();
   throw e;
  } finally {
   session.close();
  }

@PostMapping("/save1")
public boolean action01() {
 return action00(); 
}
 
@PostMapping("/save2")
public boolean action02() {
 return action00(); 
}
 
@Transactional
private boolean action00() {
 String result = true;
 try {
  System.out.println(1/0);
 } catch (Exception e) {
  TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
  result = false;
 }
 return result;
}

@PostMapping("/save1")
@Transactional
public boolean action01() {
 boolean result = action00();
 if (!result){
  TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
 }
 return result; 
}
 
@PostMapping("/save2")
@Transactional
public boolean action02() {
 boolean result = action00();
 if (!result){
  TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
 }
 return result; 
} 
 
private boolean action00() {
 String result = true;
 try {
  System.out.println(1/0);
 } catch (Exception e) {
  result = false;
 }
 return result;
}