Spring try catch 之后的事务回滚

@Transactional(rollbackFor = java.lang.Exception.class)
@Override
public Map<String, String> test()  {

    Map<String, String> map = new HashMap<>();
    int i = testDao.save("name5");
    try {
        String str = null ;
        if (i == 1) {
            str.equals(""); //保存成功，制造null异常
        }
        testDao.save("name6");
    } catch (Exception e) {
        e.printStackTrace();
        map.put("data","失败");
        //当异常被catch后，spring捕捉不到，因而不能回滚事务
        TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();  //手动回滚事务
        return map ;
        //throws new Exception("自定义异常");  //或者throws 异常
    }
    map.put("data","成功！");
    return map;
}