先上程式碼

@Test
  public void testAddUser() throws InterruptedException{
      for (int i = 0;i<20;i++) {
          User user = new User();
          user.setUserId(String.valueOf(i));
//          user.setUserName("xdp_gacl_白虎神皇");
          user.setUserBirthday(new Date().toString());
          user.setUserSalary((
 
double) (10 + i));
          userService.addUser(user);
      }
      Thread.sleep(5000);
  }

@Override
    @Transactional(propagation = Propagation.REQUIRED)
    public void addUser(User user) {
        
//        try {
//        ((UserServiceI) AopContext.currentProxy()).addUserScore();
//        }catch(Exception e) {
 

////            
//        }
        userMapper.insert(user);
//        int t = 1/0;
        
    }

　　有趣的現象就是 我發現每次都會走到 ，注意是每次，說明每次執行userService.addUser(user); 都會重新搞一次SqlSessioin，我猜測是userMapper的insert 都會重新獲取執行

 private SqlSession openSessionFromDataSource(ExecutorType execType, TransactionIsolationLevel level, boolean
 
 autoCommit) {
    Transaction tx = null;
    try {
      final Environment environment = configuration.getEnvironment();
      final TransactionFactory transactionFactory = getTransactionFactoryFromEnvironment(environment);
      tx = transactionFactory.newTransaction(environment.getDataSource(), level, autoCommit);
      final Executor executor = configuration.newExecutor(tx, execType);
      return new DefaultSqlSession(configuration, executor, autoCommit);
    } catch (Exception e) {
      closeTransaction(tx); // may have fetched a connection so lets call close()
      throw ExceptionFactory.wrapException("Error opening session.  Cause: " + e, e);
    } finally {
      ErrorContext.instance().reset();
    }
  }