MyBatis单条插入后返回自增的id

<insert id="insertUser" useGeneratedKeys="true" keyProperty="id" parameterType="com.xxxx.xxx.bean.User">   insert into user(name,age) values(#{name},#{age}) </insert>

 useGeneratedKeys="true" keyProperty="id"  

表示主键为id，且是自增的（注：只能是int类型才能自增，varchar的不行）

package com.xxxx.xxx.mapper;@MapperScanpublic interface XxxxMapper{   public Integer insertUser(User user);}

@Service("userService")  public class userService implements UserService {      @Autowired      private XxxxMapper xxxxMapper;          public void insertUser(User user) throws Excetion{       xxxxMapper.insertUser(user);       //使用返回的自增id不能使用返回值，需要如下：       logger.info("id="+user.getId());    }     }