添加对象时如何把生成的id返回

1 <insert id="adduser" parameterType="com.zhiyou.clg.bean.User" useGeneratedKeys="true" keyProperty="id">
2         insert into user(name,age) values(#{name},#{age});
3 </insert>

1 @Test
2     void testadd() throws IOException {
3         User user=new User();
4         user.setName("小天");
5         user.setAge(10);
6         userDao.adduser(user);
7         System.out.println(user.getId());
8 
9     }