创建第一个mybatis项目？

CREATE DATABASE `mybatis_db`;
USE `mybatis_db`;
CREATE TABLE `user` (
`id` int(11) NOT NULL auto_increment,
`username` varchar(32) NOT NULL COMMENT '用户名称',
`birthday` datetime default NULL COMMENT '生日',
`sex` char(1) default NULL COMMENT '性别',
`address` varchar(256) default NULL COMMENT '地址',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- insert....
insert into `user`(`id`,`username`,`birthday`,`sex`,`address`) values (1,'子
慕','2020-11-11 00:00:00','男','北京海淀'),(2,'应颠','2020-12-12 00:00:00','男','北
京海淀');

org.mybatis
mybatis
3.5.4



mysql
mysql-connector-java
5.1.6
runtime



junit
junit
4.12
test

package com.xh.pojo;

public class User {
    private int id;
    private String username;
    private String birthday;
    private String sex;
    private String address;

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", birthday='" + birthday + '\'' +
                ", sex='" + sex + '\'' +
                ", address='" + address + '\'' +
                '}';
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getBirthday() {
        return birthday;
    }

    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
}

        select * from user

package com.xh.Test;

import com.xh.pojo.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class MybatiseTest {
    @Test
    public void mybatisQuickStart() throws IOException {
        //1.加载核心配置文件
        InputStream resourceAsStream = Resources.getResourceAsStream("sqlMappConfig.xml");
        //2.获取sqlSessionFactory工厂对象
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
        // 3.获取sqlSession会话对象
        SqlSession sqlSession = sqlSessionFactory.openSession();
        //4.执行sql 参数：statementid：namespace.id组成
        List users = sqlSession.selectList("UserMapper.findAll");
        for (User user : users) {
            System.out.println(user);
        }
        sqlSession.close();
    }
}