SSH框架整合demo

Struts、Spring、Hibernate整合

一、创建web工程，搭建Struts框架开发环境：

这里只导入了项目中所需要的重要的jar包，以后根据业务要求继续导入相关的包。

1. 步骤1：:导入struts框架所需的jar包
2. 步骤2：在web.xml中配置struts2.0主过滤器
3. 步骤3：导入struts.xml配置文件

web.xml

	
	
		struts2
		org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
	

	
		struts2
		/*
	
	
		index.jsp
	

struts.xml

二、搭建Hibernate开发环境：

创建数据库：

这里只导入了项目中所需要的重要的jar包，以后根据业务要求继续导入相关的包。

工程目录：

hibernate.cfg.xml

	
		
		
		com.mysql.jdbc.Driver
		root
		root
		jdbc:mysql://localhost:3306/xbmuoa
		
		org.hibernate.dialect.MySQLDialect
		
		update
		
		true
		true
		
		
		
	

Person.hbm.xml（暂时性先写个映射文件的模板）

三、搭建Spring开发环境：

这里只导入了项目中所需要的重要的jar包，以后根据业务要求继续导入相关的包。

applicationContext.xml

以上已经将Struts、Spring、Hibernate开发所需要的jar包及其配置文件已经配置到web工程中了。

接下来，我们两两整合在一起。

四、Spring与Hibernate整合：

让Spring来管理SessionFactory和事务。

工程目录：

applicationContext.xml

jdbc.properties

jdbcUrl		= jdbc:mysql:///xbmuoa
driverClass	= com.mysql.jdbc.Driver
username	= root
password	= root

SpringTest.java

package cn.xbmu.oa.test;

import org.hibernate.SessionFactory;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringTest {
	private ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
	
	//测试SessionFactory
	@Test
	public void testSessionFactory(){
		SessionFactory sessionFactory = (SessionFactory) ac.getBean("sessionFactory");
		System.out.println(sessionFactory);
	}
}

使用Junit测试，结果：

启动tomcat没有报错，说明以上环境的搭建都完全正确，并进行测试，也没有报错。

User.java

package cn.xbmu.oa.domain;

public class User {
	private Long id;
	private String name;
	public Long getId() {
		return id;
	}
	public void setId(Long id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	
}

User.hbm.xml

记得在hibernate.cfg.xml文件中引入映射文件。

TestService.java

package cn.xbmu.oa.test;

import javax.annotation.Resource;

import org.hibernate.SessionFactory;
import org.hibernate.classic.Session;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import cn.xbmu.oa.domain.User;
@Service("testService")
public class TestService {
	@Resource
	private SessionFactory sessionFactory;
	@Transactional
	public void saveTwoUser(){
		Session currentSession = sessionFactory.getCurrentSession();
		currentSession.save(new User());
		int i = 1 / 0;//这里会抛出异常
		currentSession.save(new User());
	}
}

SpringTest.java

package cn.xbmu.oa.test;

import org.hibernate.SessionFactory;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringTest {
	private ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
	
	//测试SessionFactory
	@Test
	public void testSessionFactory(){
		SessionFactory sessionFactory = (SessionFactory) ac.getBean("sessionFactory");
		System.out.println(sessionFactory);
	}
	//测试事务
	@Test
	public void testTransaction(){
		TestService testService = (TestService) ac.getBean("testService");
		testService.saveTwoUser();
	}
}

测试事务，报错，因为在 int i = 1 / 0这里发生了异常。

查询数据库xbmuoa中的表，没有数据

我们注释掉  int i = 1 / 0;这句代码，重新测试，成功。

查询user表，里面已经有了保存的数据

我们，继续打开抛异常的语句，再测试；再注释抛异常的代码，再测试。查看表中的数据，发现了事务回滚了。

到此为止，我们顺利的将Spring与Hibernate整合在一起了。并测试了SessionFactory与事务，都正常。

五、Spring与Struts整合：

为了说明白，我们在整合之前写个Action，整合之后写个Action，看看他们之间的区别：

整合之前：

TestAction.java

package cn.xbmu.oa.test;

import com.opensymphony.xwork2.ActionSupport;

public class TestAction extends ActionSupport {
	@Override
	public String execute() throws Exception {
		System.out.println("---------->TestAction execute()");
		return "success";
	}
}

struts.xml

	
    
    
	
    
    	
		
			/test.jsp
		
    
    

test.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>


  
  
  
  	Struts2.0添加成功

  

运行：

整合之后：

导入jar包，已经完成了整合

TestAction.java

package cn.xbmu.oa.test;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionSupport;
@Controller
@Scope("prototype")
public class TestAction extends ActionSupport {
	
	@Override
	public String execute() throws Exception {
		System.out.println("---------->TestAction execute()");
		return "success";
	}
}

struts.xml

	
    
    
	
    
    	
		
			/test.jsp
		
    
    

在浏览器上运行：http://localhost:8080/xbmuoa/test.action

发现，在控制台上报错，信息如下：

严重: ********** FATAL ERROR STARTING UP STRUTS-SPRING INTEGRATION **********
Looks like the Spring listener was not configured for your web app! 
Nothing will work until WebApplicationContextUtils returns a valid ApplicationContext.
You might need to add the following to web.xml: 
    
        org.springframework.web.context.ContextLoaderListener
    
四月 03, 2016 9:48:27 下午 com.opensymphony.xwork2.util.logging.commons.CommonsLogger error
严重: Dispatcher initialization failed
java.lang.NullPointerException
	at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:209)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyResultType(XmlConfigurationProvider.java:519)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addResultTypes(XmlConfigurationProvider.java:490)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:446)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:264)
	at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)
	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:193)
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
	at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4854)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5542)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1245)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1895)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)
四月 03, 2016 9:48:27 下午 org.apache.catalina.core.StandardContext filterStart
严重: Exception starting filter struts2
Class: com.opensymphony.xwork2.spring.SpringObjectFactory
File: SpringObjectFactory.java
Method: getClassInstance
Line: 209 - com/opensymphony/xwork2/spring/SpringObjectFactory.java:209:-1
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:431)
	at org.apache.struts2.dispatcher.ng.InitOperations.initDispatcher(InitOperations.java:69)
	at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
	at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
	at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:105)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4854)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5542)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1245)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1895)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)
Caused by: java.lang.NullPointerException
	at com.opensymphony.xwork2.spring.SpringObjectFactory.getClassInstance(SpringObjectFactory.java:209)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyResultType(XmlConfigurationProvider.java:519)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addResultTypes(XmlConfigurationProvider.java:490)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:446)
	at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:264)
	at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:111)
	at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:193)
	at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:55)
	at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:374)
	at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:418)
	... 18 more

意思就是，没有和web工程整合，没有一个全局的工厂容器对象。

在web.xml中配置信息如下：
web.xml

	
	
		org.springframework.web.context.ContextLoaderListener
	
	
		contextConfigLocation
		classpath:applicationContext*.xml
	
	
	
		struts2
		org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
	

	
		struts2
		/*
	
	
		index.jsp
	

TestAction.java

package cn.xbmu.oa.test;

import javax.annotation.Resource;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import com.opensymphony.xwork2.ActionSupport;
@Controller
@Scope("prototype")
public class TestAction extends ActionSupport {
	
	@Resource
	private TestService testService;
	@Override
	public String execute() throws Exception {
		System.out.println("---------->TestAction execute()");
		testService.saveTwoUser();
		return "success";
	}
}

在浏览器中运行，报错，是因为在 int i = 1 / 0出抛出了异常

注释掉这句抛异常的语句，继续运行，成功。

以上关于SSH的整合已经成功介绍完了，所需代码下载地址： http://download.csdn.net/detail/btt2013/9480447