1：首先，设计好框架：

 

2：写工具类：

 

package com.ftz.Demo.utils;

 

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 java.io.IOException;

 

import java.io.InputStream;

 

public class MybatisUtil {

 

    private static SqlSessionFactory sqlSessionFactory;

 

    static {

 

        try {

 

            String resource = "mybatis-config.xml";

 

            InputStream inputStream = Resources.getResourceAsStream（resource）;

 

            sqlSessionFactory = new  SqlSessionFactoryBuilder（）。build（inputStream）;

 

        } catch （IOException e） {

 

            e.printStackTrace（）;

 

        }

 

    }

 

    public static SqlSession getSqlSession（）{

 

        return sqlSessionFactory.openSession（）;

 

    }

 

}

 

3：配置文件：

 

<?xml version="1.0" encoding="UTF-8" ?>

 

<!DOCTYPE configuration

 

        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

 

        "http://mybatis.org/dtd/mybatis-3-config.dtd">

 

<configuration>

 

    <environments default="development">

 

        <environment id="development">

 

            <transactionManager type="JDBC"/>

 

            <dataSource type="POOLED">

 

                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>

 

                <property name="url"

 

                          value="jdbc:mysql://localhost:3306/mybatis?useUnicode=true&amp;characterEncoding=utf8&amp;serverTimezone=GMT%2B8&amp;useSSL=false"/>

 

                <property name="username" value="root"/>

 

                <property name="password" value="root"/>

 

            </dataSource>

 

        </environment>

 

    </environments>

 

    <mappers>

 

        <mapper resource="com/ftz/Demo/dao/userMapper.xml"/>

 

    </mappers>

 

</configuration>