总步骤：添加jar——创建mybatis-config.xml——创建db.properties——创建获得sqlsession类

mybatis-config.xml文件，xml的自动生成方法博主前面文章中有

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "mybatis-3-config.dtd" >
<configuration>
	<!-- 数据库环境 -->
	<environments default="development">
		<environment id="development">
			<!-- 采用JDBC管理器方式 -->
			<transactionManager type="JDBC"/>
				<!-- POOLED采用mybatis内部连接池方式 -->
				<dataSource type="POOLED">
					<property name="driver" value="${driver}"/>
					<property name="url" value="${url}"/>
					<property name="username" value="${name}"/>
					<property name="password" value="${password}"/>
				</dataSource>
		</environment>
	</environments>
</configuration>

db.properties文件 

driver = com.mysql.jdbc.Driver
url = jdbc:mysql://localhost:3306/test
name = root 
password =1234

获得连接 

package com.db;

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

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public abstract class GetSqlSession {

	public static void main(String[] args) throws IOException {
		InputStream isRef = GetSqlSession.class.getResourceAsStream("/db.properties");
		Properties prop = new Properties();
			prop.load(isRef);
		
		String resource = "mybatis-config.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream,prop);
		SqlSession sqlSession = sqlSessionFactory.openSession();
		
		System.out.println(sqlSession);
	}
			
}

获得连接