spring与mybatis集成和事务控制

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mob604756fb8908 2015-07-28 11:31:00

文章标签 spring xml sql ide 事务管理 文章分类 代码人生

一个. 基本介绍

本文将使用spring整合mybatis, 并加入事务管理, 以此为记, 方便以后查阅。

二. 样例

1. 代码结构图：

spring与mybatis集成和事务控制_sql

2. 建表语句：

DROP DATABASE test;
CREATE DATABASE test;  
  
USE test;  
  
CREATE TABLE USER(  
  id VARCHAR(36) PRIMARY KEY,  
  username VARCHAR(64),  
  address VARCHAR(128)   
)  
  
INSERT INTO USER (id, username, address) VALUES("001", "zhangsan", "Wuhan");  
INSERT INTO USER (id, username, address) VALUES("002", "lisi", "Shanghai");

3. 实体类：

public class User {

	private String id;

	private String uname;

	private String address;

	@Override
	public String toString() {
		return "id: " + id + ", uname: " + uname + ", address: " + address;
	}
}

// 省略getter与setter方法

4. 实体映射配置：user.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.zdp.domain.User"> <resultMap type="User" id="userBean"> <id column="id" property="id"/> <result column="username" property="uname"/> <result column="address" property="address"/> </resultMap> <select id="selectUserById" parameterType="string" resultMap="userBean"> select * from user where id = #{id} </select> <update id="updateUserByCondition" parameterType="User"> update user <set> <if test="uname != null"> username = #{uname} , </if> <if test="address != null"> address = #{address} </if> </set> where id = #{id} </update> </mapper>

动态更新user

5. service接口：

public interface UserService {
	void updateUser(User user);
}

6. service实现：

public class UserServiceImpl implements UserService {

	private UserDao userDao;
	
	public void setUserDao(UserDao userDao) {
		this.userDao = userDao;
	}
	
	@Override
	public void updateUser(User user) {
		userDao.updateUser(user);
		System.out.println(1/0); // 执行时异常
	}
}

7. dao接口：

public interface UserDao {
	User findUserById(String id);
	void updateUser(User user);
}

8. dao实现：

public class UserDaoImpl extends SqlSessionDaoSupport implements UserDao {

	@Override
	public User findUserById(String id) {
		SqlSession sqlSession = super.getSqlSession();
		User user = (User) sqlSession.selectOne(User.class.getName() + ".selectUserById", id);
		return user;
	}
	
	@Override
	public void updateUser(User user) {
		super.getSqlSession().update(User.class.getName() + ".updateUserByCondition", user);
	}
}

9. mybatis全局配置：sqlMapConfig.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> <typeAliases> <typeAlias type="com.zdp.domain.User" alias="User"/> </typeAliases> <mappers>  <mapper resource="com/zdp/domain/User.xml" /> </mappers> </configuration>

10. spring配置：ApplicationContext.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:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-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">  <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql:///test"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean>  <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" />  <property name="configLocation" value="classpath:sqlMapConfig.xml"/> </bean>  <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="delete*" propagation="REQUIRED" /> <tx:method name="save*" propagation="REQUIRED" /> <tx:method name="update*" propagation="REQUIRED" /> <tx:method name="find*" read-only="true" /> <tx:method name="get*" read-only="true" /> <tx:method name="select*" read-only="true" /> </tx:attributes> </tx:advice> <aop:config>  <aop:pointcut id="pointcut" expression="execution(* com.zdp.service.*.*(..))" />  <aop:advisor pointcut-ref="pointcut" advice-ref="transactionAdvice" /> </aop:config>  <bean id="userDao" class="com.zdp.dao.impl.UserDaoImpl"> <property name="sqlSessionFactory" ref="sqlSessionFactory" /> </bean> <bean id="userService" class="com.zdp.service.impl.UserServiceImpl"> <property name="userDao" ref="userDao"/> </bean> </beans>

11. junit測试：

public class SpringTest {
	private ApplicationContext context;

	@Before
	public void sprintInit() {
		context = new ClassPathXmlApplicationContext("ApplicationContext.xml");
	}
	
	@Test
	public void testFindUserById() {
		UserDao userDao = (UserDao) context.getBean("userDao");
		User user = userDao.findUserById("001");
		System.out.println(user);
	}	
		
	@Test
	public void testUpdateUser() {
		UserService userService = (UserService) context.getBean("userService");
		User user = new User();
		user.setId("001");
		user.setUname("zhangsan1");
		userService.updateUser(user);
	}
}