Spring和MyBatis环境整合

SSH框架的结合几乎家喻户晓，但是一般的中小项目，使用Spring和MyBatis就够了，而且MyBatis轻便好使，易上手，值得大家尝试一次。

开始整合Spring和MyBatis：

1、在Eclipse里新建一个web项目，导入我们需要的jar包，可以在这里下载：http://pan.baidu.com/s/1qW8Y6yo

jar列表截图：

image

2、创建一个简单的数据库（springmybaitis）和数据表（user---id,username,password）。

image

3、以用户管理为例，创建model和dao.
文件列表截图如下：

image

User.java

package com.springMyBatis.system.model;

public class User {
    private int id;
    private String username;
    private String password;
    public User(){}
    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 getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String toString(){
        return "User[id="+id+" , username="+username+" , password="+password+"]";
    }
    

}

接口UserDao.java

package com.springMyBatis.system.dao;

import com.springMyBatis.system.model.User;

public interface UserDao {
    public User getUser(User user);
    public void addUser(User user);
    public void updateUser(User user);
    public void deleteUser(int UserId);
}

UserDao.xml

<?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.springMyBatis.system.dao.UserDao">  
<select id="getUser" parameterType="com.springMyBatis.system.model.User" resultType="com.springMyBatis.system.model.User">  
    SELECT * FROM user WHERE username=#{username} AND password=#{password}  
</select>  
<insert id="addUser" parameterType="com.springMyBatis.system.model.User" flushCache="true">  
   INSERT INTO user (id,username,password) VALUES (#{id},#{username},#{password})  
</insert>  
<update id="updateUser" parameterType="com.springMyBatis.system.model.User">  
    UPDATE user SET password=#{password} WHERE id=#{id}  
</update>  
<delete id="deleteUser" parameterType="int">  
    DELETE FROM user WHERE id=#{id}  
</delete>  
</mapper>

4、Spring配置文件----ApplicationContext.xml

image

<?xml version="1.0" encoding="UTF-8"?>
<beans  
    xmlns="http://www.springframework.org/schema/beans"  
    xmlns:tx="http://www.springframework.org/schema/tx"  
    xmlns:p="http://www.springframework.org/schema/p"  
    xmlns:aop="http://www.springframework.org/schema/aop"   
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans   
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd   
    http://www.springframework.org/schema/tx   
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd   
    http://www.springframework.org/schema/aop    
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">  
<!-- 配置数据源-->  
    <bean id="jdbcDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  
    <property name="driverClassName">  
        <value>org.gjt.mm.mysql.Driver</value>  
    </property>  
    <property name="url">  
        <value>jdbc:mysql://localhost:3306/springmybaitis?useUnicode=true&characterEncoding=UTF-8</value>  
       <!--springmybaitis是我的数据库  -->
    </property>  
    <property name="username">  
        <value>root</value>  
    </property>  
    <property name="password">  
        <value>123456</value>  
    </property>  
</bean>  
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
    <property name="dataSource" ref="jdbcDataSource" />  
    <property name="configLocation" value="classpath:mybatis-config.xml"></property>  
</bean>  
<bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean">  
    <property name="mapperInterface" value="com.springMyBatis.system.dao.UserDao"></property>  
    <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>  
</bean>  
</beans>

5、MyBatis的配置文件------mybatis-config.xml

image

<?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>  
    <mappers>  
        <mapper resource="com/springMyBatis/system/dao/UserDao.xml"/>  
    </mappers>  
</configuration>

6、测试

首先测试添加一条数据：

package com.springMyBatis.system.test;

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

import com.springMyBatis.system.dao.UserDao;
import com.springMyBatis.system.model.User;

public class UserController {
    
    /**
     * @param args
     */
    public static void main(String[] args) {
        ApplicationContext ctx=null;
        ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
        UserDao userDao=(UserDao) ctx.getBean("userDao");
        User user=new User();
        //添加两条数据
        user.setId(1);
        user.setUsername("Jessica");
        user.setPassword("123");
        userDao.addUser(user);
        user.setId(2);
        user.setUsername("Jessica2");
        user.setPassword("123");
        userDao.addUser(user);
        System.out.println("添加成功");
        //查询数据
        user.setUsername("Jessica");
        user.setPassword("123");
        System.out.println(userDao.getUser(user).toString());
        user.setUsername("Jessica2");
        user.setPassword("123");
        System.out.println(userDao.getUser(user).toString());
        //修改数据
        user.setId(2);
        user.setPassword("802");
        userDao.updateUser(user);
        System.out.println("修改成功");
        //删除数据
        userDao.deleteUser(1);
        System.out.println("删除成功");
        
    }

}

image
最后数据库只剩一条数据：
image