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。