DWR + ssh2 项目实例

高军威

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dwr

搭建步骤：
1. dwr.jar （现将dwr的jar包，到到项目的lib 目录下）
2. dwr.xml （在WEB-INF 目录下创建 dwr.xml 文件）
3. web.xml的配置
4. 页面的引入

（一）dwr.xml怎么写

<!DOCTYPE dwr PUBLIC
    "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN"
    "http://getahead.ltd.uk/dwr/dwr20.dtd">
	<dwr>
 		<allow>
  			<create creator="spring" javascript="DWRques1" scope="application">
				 <param name="beanName" value="userinfoAction"/> 
			</create>
			<convert converter="bean" match="com.gaojunwei.pojo.Userinfo"/>
   		</allow> 
   </dwr>

（二） web.xml的怎么配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <welcome-file-list>
    <welcome-file>dwr02.jsp</welcome-file>
  </welcome-file-list>
  <!-- 对Spring容器进行实例化 -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  	</listener>
  	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>classpath:applicationContext.xml</param-value>
	</context-param>
  
  <!-- 
  	(必须放在Struts2之前才能起作用)
  	组合开发中OpenSessionInView问题 
  	关闭所有Action中的Session
  -->
  
  <filter>
  	<filter-name>lazyLoadingFilter</filter-name>
  	<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
  </filter>
  <filter-mapping>
  	<filter-name>lazyLoadingFilter</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  
  
  
  
  <filter>
  	<filter-name>struts2</filter-name>
  	<filter-class>
  		org.apache.struts2.dispatcher.FilterDispatcher
  	</filter-class>
  </filter>
  <filter-mapping>
  	<filter-name>struts2</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  
    <!--DWR Servlet config -->
	<servlet>
		<servlet-name>dwr-invoker</servlet-name>
		<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
		<init-param>
			<param-name>debug</param-name>
			<param-value>true</param-value>
		</init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>dwr-invoker</servlet-name>
		<url-pattern>/dwr/*</url-pattern>
	</servlet-mapping>
  
  
  </web-app>

（三）页面怎么引入

<!-- DWR测试 -->
	<script type='text/javascript' src='<%=path%>/dwr/interface/DWRques1.js'></script>
	<script type='text/javascript' src='<%=path%>/dwr/util.js'></script>
	<script type='text/javascript' src='<%=path%>/dwr/engine.js'></script>
	<script language="javascript" type="text/javascript">
		function hhh(){
    			DWRques1.getuserinfo(hhh2);
			}
		function hhh2(userinfo){
			alert(userinfo.id+","+userinfo.names+","+userinfo.pwd);
		}	
	</script>
	
  </head>
  
  <body>
    <input type="button" value="DWR测试" onclick="hhh();">
  </body>

这样就行啦！！！加油哦

可能遇到的问题：
1.)session error!
需要在web.xml文件中添加如下配置：

	<servlet>
   		<servlet-name>dwr-invoker</servlet-name>
   		<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
   		<init-param>
    		<param-name>debug</param-name>
    		<param-value>true</param-value>
   		</init-param>
   		<init-param>   
             <param-name>crossDomainSessionSecurity</param-name>   
             <param-value>false</param-value>   
        </init-param>
  	</servlet>

原文出自：http://blog.csdn.net/sully2008/article/details/6755660

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