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Spring和MyBatis环境整合
Spring：
Spring是一个轻量级的控制反转(IoC)和面向切面(AOP)的容器框架。
两个重要模块：Spring 面向方面编程（AOP）和控制反转 （IOC） 容器。
控制反转模式（也称作依赖性介入）的基本概念是：不创建对象，但是描述创建它们的方式。在代码中不直接与对象和服务连接，但在配置文件中描述哪一个组件需要哪一项服务。
容器 （在 Spring 框架中是 IOC 容器） 负责将这些联系在一起。在典型的 IOC 场景中，容器创建了所有对象，并设置必要的属性将它们连接在一起，决定什么时间调用方法。
MyBatis:
链接代码：
model----User.java
1 package com.springMyBatis.system.model;
2
3 public class User {
4 private int id;
5 private String username;
6 private String password;
7 public User(){}
8 public int getId() {
9 return id;
10 }
11 public void setId(int id) {
12 this.id = id;
13 }
14 public String getUsername() {
15 return username;
16 }
17 public void setUsername(String username) {
18 this.username = username;
19 }
20 public String getPassword() {
21 return password;
22 }
23 public void setPassword(String password) {
24 this.password = password;
25 }
26 public String toString(){
27 return "User[id="+id+" , username="+username+" , password="+password+"]";
28 }
29
30
31 }
dao------接口UserDao.java
package com.springMyBatis.system.dao;
2
3 import com.springMyBatis.system.model.User;
4
5 public interface UserDao {
6 public User getUser(User user);
7 public void addUser(User user);
8 public void updateUser(User user);
9 public void deleteUser(int UserId);
10 }
dao-----UserDao.xml
<?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
4 <mapper namespace="com.springMyBatis.system.dao.UserDao">
5 <select id="getUser" parameterType="com.springMyBatis.system.model.User" resultType="com.springMyBatis.system.model.User">
6 SELECT * FROM user WHERE username=#{username} AND password=#{password}
7 </select>
8 <insert id="addUser" parameterType="com.springMyBatis.system.model.User" flushCache="true">
9 INSERT INTO user (id,username,password) VALUES (#{id},#{username},#{password})
10 </insert>
11 <update id="updateUser" parameterType="com.springMyBatis.system.model.User">
12 UPDATE user SET password=#{password} WHERE id=#{id}
13 </update>
14 <delete id="deleteUser" parameterType="int">
15 DELETE FROM user WHERE id=#{id}
16 </delete>
17 </mapper>
<?xml version="1.0" encoding="UTF-8"?>
2 <beans
3 xmlns="http://www.springframework.org/schema/beans"
4 xmlns:tx="http://www.springframework.org/schema/tx"
5 xmlns:p="http://www.springframework.org/schema/p"
6 xmlns:aop="http://www.springframework.org/schema/aop"
7 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
8 xsi:schemaLocation="http://www.springframework.org/schema/beans
9 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
10 http://www.springframework.org/schema/tx
11 http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
12 http://www.springframework.org/schema/aop
13 http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
14 <!-- 配置数据源-->
15 <bean id="jdbcDataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
16 <property name="driverClassName">
17 <value>org.gjt.mm.mysql.Driver</value>
18 </property>
19 <property name="url">
20 <value>jdbc:mysql://localhost:3306/springmybaitis?useUnicode=true&characterEncoding=UTF-8</value>
21 <!--springmybaitis是我的数据库 -->
22 </property>
23 <property name="username">
24 <value>root</value>
25 </property>
26 <property name="password">
27 <value>123456</value>
28 </property>
29 </bean>
30 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
31 <property name="dataSource" ref="jdbcDataSource" />
32 <property name="configLocation" value="http://www.mamicode.com/classpath:mybatis-config.xml"></property>
33 </bean>
34 <bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean">
35 <property name="mapperInterface" value="http://www.mamicode.com/com.springMyBatis.system.dao.UserDao"></property>
36 <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
37 </bean>
38 </beans>
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE configuration PUBLIC 3 "-//mybatis.org//DTD Config 3.0//EN" 4 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 5 <configuration> 6 <mappers> 7 <mapper resource="com/springMyBatis/system/dao/UserDao.xml"/> 8 </mappers> 9 </configuration>
6、测试
首先测试添加一条数据：
1 package com.springMyBatis.system.test;
2
3 import org.springframework.context.ApplicationContext;
4 import org.springframework.context.support.ClassPathXmlApplicationContext;
5
6 import com.springMyBatis.system.dao.UserDao;
7 import com.springMyBatis.system.model.User;
8
9 public class UserController {
10
11 /**
12 * @param args
13 */
14 public static void main(String[] args) {
15 ApplicationContext ctx=null;
16 ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
17 UserDao userDao=(UserDao) ctx.getBean("userDao");
18 User user=new User();
19 //添加两条数据
20 user.setId(1);
21 user.setUsername("Jessica");
22 user.setPassword("123");
23 userDao.addUser(user);
24 user.setId(2);
25 user.setUsername("Jessica2");
26 user.setPassword("123");
27 userDao.addUser(user);
28 System.out.println("添加成功");
29 //查询数据
30 user.setUsername("Jessica");
31 user.setPassword("123");
32 System.out.println(userDao.getUser(user).toString());
33 user.setUsername("Jessica2");
34 user.setPassword("123");
35 System.out.println(userDao.getUser(user).toString());
36 //修改数据
37 user.setId(2);
38 user.setPassword("802");
39 userDao.updateUser(user);
40 System.out.println("修改成功");
41 //删除数据
42 userDao.deleteUser(1);
43 System.out.println("删除成功");
44
45 }
46
47 }
Spring和MyBatis环境整合