1：首先引入所需要的jar包。包括mybatis-3.2.8.jar、mysql-connector-java-3.1.12-bin.jar、junit4.4.jar、log4j-1.2.17.jar。其中後面2個不是必須需要的。只需要mybatis的和mysql驅動包就行了，上面幾個jar一定要新增至構建路徑。

2：建立mybatis-config.xml檔案。裡面存放mybatis的一些配置資訊。如下：

<span style="font-size:18px;"><?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>
	<!-- <properties resource="jdbc.properties"/> -->
	<properties>
		<property name="jdbc.driverClassName" value="com.mysql.jdbc.Driver"/>
		<property name="jdbc.url" value="jdbc:mysql://localhost:3306/db_mybatis?characterEncoding=UTF-8"/>
		<property name="jdbc.username" value="root"/>
		<property name="jdbc.password" value="root"/>
	</properties>
	<!-- <typeAliases>
		<typeAlias alias="Student" type="com.levi.model.Student"/>
	</typeAliases> -->
	<typeAliases>
		<package name="com.levi.model"/>
	</typeAliases>
	<environments default="development">
		<environment id="development">
			<transactionManager type="JDBC" />
			<dataSource type="POOLED">
				<property name="driver" value="${jdbc.driverClassName}" />
				<property name="url" value="${jdbc.url}" />
				<property name="username" value="${jdbc.username}" />
				<property name="password" value="${jdbc.password}" />
			</dataSource>
		</environment>
		<environment id="test">
			<transactionManager type="JDBC" />
			<dataSource type="POOLED">
				<property name="driver" value="${jdbc.driverClassName}" />
				<property name="url" value="${jdbc.url}" />
				<property name="username" value="${jdbc.username}" />
				<property name="password" value="${jdbc.password}" />
			</dataSource>
		</environment>
	</environments>
	<mappers>
		<!-- <mapper resource="com/levi/mappers/StudentMapper.xml" /> -->
		<!-- <mapper class="com.levi.mappers.StudentMapper"/> -->
		<package name="com.levi.mappers"/>
	</mappers>
</configuration>
</span>
 

3：建立model類：Student.java

<span style="font-size:18px;">package com.levi.model;

public class Student {
	private Integer id;
	private String name;
	private Integer age;
	public Student() {
		super();
		// TODO Auto-generated constructor stub
	}
	public Student(String name, Integer age) {
		super();
		this.name = name;
		this.age = age;
	}
	public Student(Integer id,String name, Integer age) {
		this.age=age;
		this.name=name;
		this.id=id;
	}
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public Integer getAge() {
		return age;
	}
	public void setAge(Integer age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "Student [id=" + id + ", name=" + name + ", age=" + age + "]";
	}
}
</span>
 

package com.levi.mappers;

import java.util.List;

import com.levi.model.Student;

public interface StudentMapper {

	public int add(Student student);
	public int delete(int id);
	public int update(Student student);
	public Student getOne(int id);
	public List<Student> getAll();
}
 

<?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.levi.mappers.StudentMapper">
	<resultMap type="Student" id="StudentResult">
		<id property="id" column="id"/>
		<result property="name" column="name"/>
		<result property="age" column="age"/>
	</resultMap>
	<insert id="add" parameterType="Student"  >
		insert into t_student values(null,#{name},#{age})
	</insert>
	<delete id="delete"	parameterType="int">
		delete from t_student where id=#{id}
	</delete>
	<update id="update" parameterType="Student" >
		update t_student set name = #{name} , age = #{age} where id = #{id}
	</update>
	<select id="getOne" parameterType="int" resultType="Student">
		select *from t_student where id = #{id}
	</select>
	
	<select id="getAll" resultMap="StudentResult">
		select * from t_student  
	</select>
</mapper> 

package com.levi.util;

import java.io.InputStream;

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 class SqlSessionFactoryUtil {

	private static SqlSessionFactory sqlSessionFactory;
	
	public static SqlSessionFactory getSqlSessionFactory(){
		if(sqlSessionFactory==null){
			InputStream inputStream=null;
			try{
				inputStream=Resources.getResourceAsStream("mybatis-config.xml");
				sqlSessionFactory=new SqlSessionFactoryBuilder().build(inputStream);
			}catch(Exception e){
				e.printStackTrace();
			}
		}
		return sqlSessionFactory;
	}
	
	public static SqlSession openSession(){
		return getSqlSessionFactory().openSession();
	}
}

log4j.properties檔案：

log4j.rootLogger=info,appender1,appender2

log4j.appender.appender1=org.apache.log4j.ConsoleAppender 

log4j.appender.appender2=org.apache.log4j.FileAppender 
log4j.appender.appender2.File=logFile.txt
 
log4j.appender.appender1.layout=org.apache.log4j.TTCCLayout
log4j.appender.appender2.layout=org.apache.log4j.TTCCLayout  

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/db_mybatis?characterEncoding=UTF-8
jdbc.username=root
jdbc.password=root

package com.levi.service;


import java.util.List;

import org.apache.ibatis.session.SqlSession;
import org.apache.log4j.Logger;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.levi.mappers.StudentMapper;
import com.levi.model.Student;
import com.levi.util.SqlSessionFactoryUtil;

public class ServiceTest {

	private static Logger logger = Logger.getLogger(ServiceTest.class);
	private SqlSession sqlSession = null;

	@Before
	public void setUp() throws Exception {
		sqlSession = SqlSessionFactoryUtil.getSqlSessionFactory().openSession();
	}

	@After
	public void tearDown() throws Exception {
	}

	@Test
	public void add() {
		StudentMapper mapper = sqlSession.getMapper(StudentMapper.class);
		int add = mapper.add(new Student("飛飛飛", 99));
		sqlSession.commit();
		if (add > 0) {
			logger.info("新增成功");
		}
	}

	@Test
	public void delete() {
		StudentMapper mapper = sqlSession.getMapper(StudentMapper.class);
		int delete = mapper.delete(14);
		sqlSession.commit();
		if (delete > 0) {
			logger.info("刪除成功");
		}
	}

	@Test
	public void update() {
		StudentMapper mapper = sqlSession.getMapper(StudentMapper.class);
		int update = mapper.update(new Student(16, "飛飛飛2", 100));
		sqlSession.commit();
		if (update > 0) {
			logger.info("更新成功");
		}
	}
	@Test
	public void getOne()
	{
		StudentMapper mapper = sqlSession.getMapper(StudentMapper.class);
		Student one = mapper.getOne(16);
		if (one!=null) {
			logger.info("查詢一個成功");
		}
		sqlSession.commit();
		System.out.println(one.toString());
	}
	@Test
	public void getAll()
	{
		StudentMapper mapper = sqlSession.getMapper(StudentMapper.class);
		List<Student> all = mapper.getAll();
		sqlSession.commit();
		for (Student student : all) {
			System.out.println(student.toString());
		}
	}
}