java事务内开启新事务，并只回滚新开事务

实例:

插入张三和李四，李四插入失败，不影响张三插入。

    @Override
    @Transactional
    public void testTx() {
        User user = new User();
        user.setUserCode("10002");
        user.setLoginCode("10002");
        user.setUserName("张三");
        user.setPassword("123456");
        baseMapper.insert(user);
        try{
        	//代理对象，
            IUserService userService = SpringUtils.getBean("userService");
            userService.save();
        }catch (Exception e){
            System.out.println("-----------------------------------");
            e.printStackTrace();
        }

    }

@Override
    @Transactional(propagation = Propagation.REQUIRES_NEW)
    public void save(){
        User user2 = new User();
        user2.setUserCode("10003");
        user2.setLoginCode("10003");
        user2.setUserName("李四");
        user2.setPassword("123456");
        baseMapper.insert(user2);
        int i = 1/0;
    }