1、这几天在网上查找spring和mybatis的整合的博客以及相关的资料，弄来弄去，程序还是跑不起来。今天早上突然意识到，什么事都是从零开始的，所以，我就改变了我的整合思路：首先，先在spring上整合数据源（请参考本人的上一篇博客），其次，整合sqlSessionFactoryBean。具体请看下面：

2、前期准备：（1）、对mybatis有一定的了解，能够使用其基本功能。（2）、理解spring的相关原理和概念

3、总体的包和类等等

所以，在我们开始之前，请自己下载好相关的jar包，包括
(spring：)
http://repo.spring.io
(mybatis:)
https://github.com/mybatis/mybatis-3/releases
(mybatis-spring:)
https://github.com/mybatis/spring/releases

百度云下载链接
4、配置applicationContext.xml文件：（配置文件里面的前16行是我随便在网上找的，宜多不宜少）

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"     xmlns:p="http://www.springframework.org/schema/p"      xmlns:context="http://www.springframework.org/schema/context"      xmlns:util="http://www.springframework.org/schema/util"     xmlns:mvc="http://www.springframework.org/schema/mvc"      xsi:schemaLocation="          http://www.springframework.org/schema/util          http://www.springframework.org/schema/util/spring-util-3.1.xsd          http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans-3.1.xsd          http://www.springframework.org/schema/context           http://www.springframework.org/schema/context/spring-context-3.1.xsd          http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">  

       <!-- 数据源 -->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"      destroy-method="close">         <property name="driverClass" value="com.mysql.jdbc.Driver"/>      <property name="jdbcUrl" value="jdbc:mysql://localhost/test"/>        <property name="user" value="root"/>      <property name="password" value=""/>      </bean>

    <!-- 注意：这个class是jar包中的 -->    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">         <property name="dataSource" ref="dataSource" />   </bean>   

      <!-- 关联sqlSessionFacotry， 生成相关的sqlSession； 对mybatis的mapper接口，注入成beans -->        <!-- 注意：这个class是jar包中的 -->     <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">                <!-- 注意：这个是value，不是class -->          <property name="mapperInterface" value="com.dao.UserMapper"/>         <property name="sqlSessionFactory" ref="sqlSessionFactory"/>      </bean>

        <!-- 这个和上面的bean是差不多的 -->        <bean id="managerMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">       <property name="mapperInterface" value="com.dao.ManagerMapper"/>          <property name="sqlSessionFactory" ref="sqlSessionFactory"/>      </bean>

        <!-- 业务bean -->   <bean id="testService" class="com.impl.TestServiceImpl">          <property name="userMapper" ref="userMapper"/>        <property name="managerMapper" ref="managerMapper"/>      </bean> </beans>

5、models，包括user和manager

public class User {

  private int id;   private String name;  private String password;

  public User(){

  }

  public int getId() {      return id;    } public void setId(int id) {       this.id = id;    } public String getName() {     return name;  } public void setName(String name) {        this.name = name;    } public String getPassword() {     return password;  } public void setPassword(String password) {        this.password = password;    }

}

package com.models;

public class Manager {

    private int id;   private String name;  private String password;

  public Manager(){

  } public int getId() {      return id;    } public void setId(int id) {       this.id = id;    } public String getName() {     return name;  } public void setName(String name) {        this.name = name;    } public String getPassword() {     return password;  } public void setPassword(String password) {        this.password = password;    }}

6、mybatis的mapper接口：（没有，也不用实现类）

package com.dao;

import org.apache.ibatis.annotations.Param;import org.apache.ibatis.annotations.Select;

import com.models.User;

public interface UserMapper {    @Select("SELECT * FROM user WHERE id = #{id}")    public User getUser(@Param("id") String userId);}

import org.apache.ibatis.annotations.Select;

import com.models.Manager;public interface ManagerMapper {  @Select("SELECT * FROM manager WHERE id = #{id}") public Manager getManager(String managerID);}

7、写到这里，我们的工作已经基本上完成了大部分，让我们写一个main函数测试一下：

package com.test;

import org.springframework.context.ApplicationContext;import org.springframework.context.support.FileSystemXmlApplicationContext;

import com.dao.UserMapper;import com.models.Manager;import com.models.User;import com.service.TestService;

public class SpringTest { public static void main(String[] args) {      ApplicationContext aa = new FileSystemXmlApplicationContext("classpath:applicationContext.xml");                //在我数据库中的userId有1这一条     User user = (User)aa.getBean(UserMapper.class).getUser("1");       System.out.println(user.getId());     System.out.println(user.getName());       System.out.println(user.getPassword());   }}

8、接下来，我们写事物的业务接口和实现此接口的业务类：
先看业务接口：

package com.service;

import com.models.Manager;import com.models.User;

public interface TestService {

  public User doSomeBusinessStuff(String userID);

  public Manager getManagerBusiness(String managerID);}

再看看实现类：（注意，下面的两个setter方法不能省略，可以省略getter方法）

package com.impl;

import com.dao.ManagerMapper;import com.dao.UserMapper;import com.models.Manager;import com.models.User;import com.service.TestService;

public class TestServiceImpl implements TestService{

    private UserMapper userMapper;    private ManagerMapper managerMapper;

  public void setUserMapper(UserMapper userMapper){     this.userMapper = userMapper;    }

    public void setManagerMapper(ManagerMapper managerMapper) {       this.managerMapper = managerMapper;  }

   @Override    public User doSomeBusinessStuff(String userID) {      return this.userMapper.getUser(userID);   }

   @Override    public Manager getManagerBusiness(String managerID) {     return this.managerMapper.getManager(managerID);  }}

9、因为之前我们已经在applicationContext.xml文件中配置了上面这个业务实现类的bean，所以，我们的工作已经完成，let我们test一下：

package com.test;

import org.springframework.context.ApplicationContext;import org.springframework.context.support.FileSystemXmlApplicationContext;

import com.dao.UserMapper;import com.models.Manager;import com.models.User;import com.service.TestService;

public class SpringTest {  public static void main(String[] args) {      ApplicationContext aa = new FileSystemXmlApplicationContext("classpath:applicationContext.xml");       /*User user = (User)aa.getBean(UserMapper.class).getUser("1");     System.out.println(user.getId());     System.out.println(user.getName());       System.out.println(user.getPassword());*/

     TestService service = aa.getBean(TestService.class);

                //调用业务实现类的第一个方法

                User user = service.doSomeBusinessStuff("1");     System.out.println(user.getId());     System.out.println(user.getName());       System.out.println(user.getPassword());

                //调用业务实现类的第二个方法

        Manager manager = service.getManagerBusiness("1");     System.out.println("manager info = "+manager.getId()+"; "+manager.getName()+"; "+manager.getPassword());  }}10、跑起来了吗？come on！！！！！

参考文献：http://mybatis.github.io/spring/

##############################################################################

11、前面我们使用annotation配置mybatis的，但是在实际的项目开发中使用xml文件配置的方式比较多。
所以，下面我们在前面的基础之上使用xml文件配置：

（1）、新增加两个文件，也就是mybatis的xml配置文件，是在config.mappers包下面的：

（3）、修改spring的配置文件applicationContext.xml(只需增加下划线的配置文字即可，也别忘了删掉annotation的配置)