初学者springboot启动报错Caused by: java.lang.IllegalArgumentException: Invalid value type for attribute ‘

本人第一次接触springboot框架本来想用mybatis连接数据库，引入mybatisplus配置就启动报错

package com.hu.springboot_mybatis.dao;


import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.hu.springboot_mybatis.pojo.UserPojo;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface UserDao extends BaseMapper<UserPojo> {

}




package com.hu.springboot_mybatis.pojo;

import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
@TableName(value = "user")
public class UserPojo {
    public  String username;
    public  String password;
}






package com.hu.springboot_mybatis.service;


import com.hu.springboot_mybatis.dao.UserDao;
import com.hu.springboot_mybatis.pojo.UserPojo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class UserServiceImpl {
    @Autowired
    UserDao userDao;
    public  void addUser(String username,String password){
        userDao.insert(new UserPojo(username,password));
    }
}

然后在网上各种找原因最终是因为

mybatis-spring版本原因

我一开始是2.0的版本改成3.0就ok了