SSH 整合- 6 - service_serviceImp…

1. 流程图

 

2. 工程结构

 

3. 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: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-2.5.xsd

           http://www.springframework.org/schema/context

           http://www.springframework.org/schema/context/spring-context-2.5.xsd

           http://www.springframework.org/schema/aop

           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd

           http://www.springframework.org/schema/tx 

           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

<context:annotation-config />

<context:component-scan base-package="com.edu.ssh" />

 

<bean

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<property name="locations">

<value>classpath:jdbc.properties</value>

</property>

</bean>

 

<bean id="dataSource" destroy-method="close"

class="org.apache.commons.dbcp.BasicDataSource">

<property name="driverClassName"

value="${jdbc.driverClassName}" />

<property name="url" value="${jdbc.url}" />

<property name="username" value="${jdbc.username}" />

<property name="password" value="${jdbc.password}" />

</bean>

 

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="packagesToScan">

<list>

<value>com.edu.ssh.model</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.MySQLDialect

</prop>

<prop key="hibernate.show_sql">true</prop>

</props>

</property>

</bean>

 

<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">

<property name="sessionFactory" ref="sessionFactory"></property>

</bean>

 

<bean id="txManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

 

<!-- 用spring AOP给service层的方法添加事务管理 -->

<aop:config>

<aop:pointcut id="bussinessService"

expression="execution(public * com.edu.ssh.service.*.*(..))" />

<aop:advisor pointcut-ref="bussinessService"

advice-ref="txAdvice" />

</aop:config>

 

<tx:advice id="txAdvice" transaction-manager="txManager">

<tx:attributes>

<tx:method name="exists" read-only="true" />

<tx:method name="insert*" propagation="REQUIRED"/>

</tx:attributes>

</tx:advice>

 

</beans>

4. UserAction.java

package com.edu.ssh.action;

 

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

 

import com.edu.ssh.model.User;

import com.edu.ssh.service.UserManager;

import com.opensymphony.xwork2.ActionSupport;

 

public class UserAction extends ActionSupport {

private static final long serialVersionUID = 1L;

 

// 用编译器生成getter/setter方法

private int id;

private String username;

private String password;

private String password2;

 

 

private UserManager userManager;

 

public UserAction() {

// 直接用编码实现UserManeger的初始化

// struts2的Action暂时还没交给spring管理，

//下一个工程将会实现这个功能，

ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");

userManager = (UserManager) ctx.getBean("userManager");

}

 

 

public UserManager getUserManager() {

return userManager;

}

 

 

public void setUserManager(UserManager userManager) {

this.userManager = userManager;

}

 

 

@Override

public String execute() throws Exception {

User user = new User();

user.setUsername(username);

user.setPassword(password);

if (userManager.exists(user))

return "fail";

 

userManager.insertOneUser(user);

return "success";

}

// 。。。。。由于代码是和之前的是一样的在这就省略

}

 

5. UserActionTest.java

package com.edu.ssh.action;

 

import org.junit.After;

import static org.junit.Assert.*;

import org.junit.Before;

import org.junit.Test;

 

public class UserActionTest {

 

 

@Test

public void testExecute() {

UserAction userAction = new UserAction();

userAction.setUsername("hehe");

userAction.setPassword("hehe");

try {

           // 用户“hehe”已经存在

assertEquals("fail", userAction.execute());

} catch (Exception e) {

e.printStackTrace();

}

}

 

}

 

7. UserDAOImpl.java

package com.edu.ssh.dao.impl;

 

import java.util.List;

 

import javax.annotation.Resource;

 

import org.springframework.orm.hibernate3.HibernateTemplate;

import org.springframework.stereotype.Component;

 

import com.edu.ssh.dao.UserDAO;

import com.edu.ssh.model.User;

 

@Component

public class UserDAOImpl implements UserDAO {

 

private HibernateTemplate hibernateTemplate;

 

 

public HibernateTemplate getHibernateTemplate() {

return hibernateTemplate;

}

 

 

// 使用spring的依赖注入,默认找 名字为 hibernateTemplate 的bean

@Resource

public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {

this.hibernateTemplate = hibernateTemplate;

}

 

// 。。。。。由于代码是和之前的是一样的在这就省略

 

}

8. UserManagerImpl.java

package com.edu.ssh.service.impl;

 

import javax.annotation.Resource;

 

import org.springframework.stereotype.Component;

 

import com.edu.ssh.dao.UserDAO;

import com.edu.ssh.model.User;

import com.edu.ssh.service.UserManager;

 

// 用Component注解，使得本类交给spring容器管理，

// 并且指定bean的名字为userManager

@Component("userManager")

public class UserManagerImpl implements UserManager {

 

 

private UserDAO userDAO;

 

 

public UserDAO getUserDAO() {

return userDAO;

}

 

 

// 使用spring依赖注入

@Resource

public void setUserDAO(UserDAO userDAO) {

this.userDAO = userDAO;

}

 

// 。。。。。由于代码是和之前的是一样的在这就省略

}

 

9. 结果

 

 

 

 10. 分析

     有了spring就不需要hibernate.cfg.xml文件了,里面的配置都放在了spring的配置文件beans.xml里,HibernateUtil.java也不需要了，HibernateTemplate hibernateTemplate可以使用spring的依赖注入初始化除了struts2的Action 之外的实现类基本上都被spring管理了。要使得Action也被spring管理，我们还需要在web.xml里添加一些配置，还要添加一个struts2的插件。

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