Mybatis Plus插入数据后获取新数据id值的踩坑记录

@DS("wxuser")
@Mapper
public interface UserInfoMapper extends BaseMapper<UserInfo> {

}

		@Autowired
		UserInfoMapper userInfoMapper;

		UserInfo user = new UserInfo();
        user.setAddress(userInfo.getAddress());
        user.setAge(userInfo.getAge());
        user.setMobile(userInfo.getMobile());
        user.setCreateTime(new Date());
        user.setUpdateTime(new Date());
        // 此num是指的插入数据成功的条数
        int num = userInfoMapper.insert(user);
        //如果想要获取插入数据的id，需要：user.getUserId();
        int id = user.getUserId();

@DS("wxuser")
@Mapper
public interface UserInfoMapper extends BaseMapper<UserInfo> {
    int saveUserInfo(@Param("userInfo")UserInfo userInfo);
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.wx.user.mapper.UserInfoMapper">

    <insert id="saveUserInfo" useGeneratedKeys="true" keyProperty="userInfo.userId" keyColumn="userId">
        insert into userInfo (userNick,userName,password,isdelete,address,mobile)  values (#{userInfo.userNick},#{userInfo.userName},#{userInfo.password},#{userInfo.isDelete},#{userInfo.address},#{userInfo.mobile})
    </insert>

</mapper>

# Mybatis Plus
mybatis-plus:
  configuration:
    map-underscore-to-camel-case: false # 设置字段不使用下划线方式
  global-config:
    db-config:
      id-type: AUTO
      table-underline: false # 设置表名字不使用下划线方式
  mapper-locations: classpath*:/mapper/**/*.xml

		@Autowired
		UserInfoMapper userInfoMapper;

		UserInfo user = new UserInfo();
        user.setAddress(userInfo.getAddress());
        user.setAge(userInfo.getAge());
        user.setMobile(userInfo.getMobile());
        user.setCreateTime(new Date());
        user.setUpdateTime(new Date());
        // 此num是指的插入数据成功的条数
        int num = userInfoMapper.saveUserInfo(user);
        //如果想要获取插入数据的id，需要：user.getUserId();
        int id = user.getUserId();