Spring集成Mybatis

jar文件下载地址：http://download.csdn.net/detail/huhui_bj/8575533

1、准备jar包

【mybatis】
mybatis-3.2.0.jar
mybatis-spring-1.1.1.jar
log4j-1.2.17.jar
【spring】
spring-aop-3.2.0.RELEASE.jar
spring-beans-3.2.0.RELEASE.jar
spring-context-3.2.0.RELEASE.jar
spring-core-3.2.0.RELEASE.jar
spring-expression-3.2.0.RELEASE.jar
spring-jdbc-3.2.0.RELEASE.jar
spring-test-3.2.4.RELEASE.jar
spring-tx-3.2.0.RELEASE.jar

aopalliance-1.0.jar
cglib-nodep-2.2.3.jar
commons-logging-1.1.1.jar
【MYSQL驱动包】
mysql-connector-java-5.0.4-bin.jar

2、建立数据表和实体类

CREATE TABLE s_user(
	user_id INT AUTO_INCREMENT PRIMARY KEY,
	user_name VARCHAR(30),
	user_birthday DATE,
	user_salary DOUBLE
)

public class User {

	private int id;
	private String name;
	private Date birthday;
	private double salary;
    
    //set,get方法
}

3、DAO接口

public interface UserMapper {

	void save(User user);
	void update(User user);
	void delete(int id);
	User findById(int id);
	List<User> findAll();
}

4、SQL映射文件：userMapper.xml(与接口忽略大小写同名)

<?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">

<!-- 
	UserMapper.java的文件名必须和userMapper.xml相同
	namespace：必须与对应的接口全类名一致
	id：必须与对应接口的某个方法名一致
 -->

<mapper namespace="com.atguigu.mybatis.test9.UserMapper">
	<resultMap type="User" id="userResult">
		<result column="user_id" property="id"/>
		<result column="user_name" property="name"/>
		<result column="user_birthday" property="birthday"/>
		<result column="user_salary" property="salary"/>
	</resultMap>

	<!-- 取得插入数据后的id -->
	<insert id="save" keyColumn="user_id" keyProperty="id" useGeneratedKeys="true">
		insert into s_user(user_name,user_birthday,user_salary)
		values(#{name},#{birthday},#{salary})
	</insert>

	<update id="update">
		update s_user
		set user_name = #{name},
			user_birthday = #{birthday},
			user_salary = #{salary}
		where user_id = #{id}
	</update>
	
	<delete id="delete">
		delete from s_user
		where user_id = #{id}
	</delete>

	<select id="findById" resultMap="userResult">
		select *
		from s_user
		where user_id = #{id}
	</select>
	
	<select id="findAll" resultMap="userResult">
		select * 
		from s_user
	</select>
</mapper>

5、Spring配置文件beans.xml

<?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:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="
		http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context-3.2.xsd
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
	<!-- 1. 数据源 : DriverManagerDataSource -->
	<bean id="dataSource" 
		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName" value="com.mysql.jdbc.Driver"/>
		<property name="url" value="jdbc:mysql://localhost:3306/mybatis"/>
		<property name="username" value="root"/>
		<property name="password" value="root"/>
	</bean>
	
	<!-- 
		2. mybatis的SqlSession的工厂: SqlSessionFactoryBean 
			dataSource / typeAliasesPackage
	-->
	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		<property name="typeAliasesPackage" value="com.atuigu.spring_mybatis2.domain"/>
	</bean>

	<!-- 
		3. mybatis自动扫描加载Sql映射文件 : MapperScannerConfigurer 
			sqlSessionFactory / basePackage
	-->
	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
		<property name="basePackage" value="com.atuigu.spring_mybatis2.mapper"/>
		<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
	</bean> 
	
	<!-- 4. 事务管理 : DataSourceTransactionManager -->
	<bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource"/>
	</bean> 

	<!-- 5. 使用声明式事务 -->
	<tx:annotation-driven transaction-manager="txManager" />
	
</beans>

6、mybatis的配置文件: mybatis-config.xml

<?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>
	<!-- Spring整合myBatis后，这个配置文件基本能够不要了-->
	<!-- 设置外部配置文件 -->
	<!-- 设置类别名 -->
	<!-- 设置数据库链接环境 -->
	<!-- 映射文件 -->	
</configuration>

7、测试

@RunWith(SpringJUnit4ClassRunner.class) //使用Springtest测试框架
@ContextConfiguration("/beans.xml") //加载配置
public class SMTest {

	@Autowired  //注入
	private UserMapper userMapper;

	@Test
	public void save() {
		User user = new User();
		user.setBirthday(new Date());
		user.setName("marry");
		user.setSalary(300);
		userMapper.save(user);
		System.out.println(user.getId());
	}

	@Test
	public void update() {
		User user = userMapper.findById(2);
		user.setSalary(2000);
		userMapper.update(user);
	}

	@Test
	public void delete() {
		userMapper.delete(3);
	}

	@Test
	public void findById() {
		User user = userMapper.findById(1);
		System.out.println(user);
	}

	@Test
	public void findAll() {
		List<User> users = userMapper.findAll();
		System.out.println(users);
	}
}