dwr基于struts2和spring2.5的配置详解

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第一步:web.xml配置;
<servlet>
		<servlet-name>dwr-invoker</servlet-name>
		<servlet-class>org.directwebremoting.spring.DwrSpringServlet</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>
        <init-param>
            <param-name>allowScriptTagRemoting</param-name>
            <param-value>true</param-value>
        </init-param>
		<load-on-startup>1</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>dwr-invoker</servlet-name>
		<url-pattern>/dwr/*</url-pattern>
	</servlet-mapping>

因为SSH框架集成了struts2,此处必须配置不让struts2拦截掉/dwr/*的action,需要作第二步配置。
第二步:struts.xml配置
<constant name="struts.action.excludePattern" value="/dwr/.*,/dwr/test/.*"></constant>

用以使struts不拦截/dwr/.*的请求
第三步:spring的applicationContext.xml配置
1)、增加命名空间
	xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"
	xmlns:dwra="http://www.directwebremoting.org/schema/spring-dwr-annotations"

2)、
http://www.directwebremoting.org/schema/spring-dwr
    http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd
    http://www.directwebremoting.org/schema/spring-dwr-annotations    
  	http://www.directwebremoting.org/schema/spring-dwr-annotations.xsd 

3)、
<context:annotation-config/>
	<context:component-scan base-package="com.gd.service.impl" />
	<dwr:configuration />
	 
	<dwr:annotation-scan base-package="com.gd.service.impl" scanDataTransferObject="true" scanRemoteProxy="true" />

第四步:接口编写加注解:
@RemoteProxy(creator = SpringCreator.class,name = "DWRService")
public class TmEduExaminationInfoManagerImpl implements
		ITmEduExaminationInfoManager 


@RemoteMethod
	public String queryInfo(String str){
		return "hello " + str;
	}

注:必须有接口及其实现类
第五步:jsp页面调用
1)、引用js
<script type='text/javascript' src='dwr/engine.js'></script> 
<script type='text/javascript' src='dwr/util.js'></script>
<script type='text/javascript' src='dwr/interface/DWRService.js'></script>

2)、JS调用
DWRService.queryInfo("你是谁",function(flag){  
	    if(flag){  
	    	alert(flag);  
	    }else{  
	     	alert(flag);  
	    }  
   	});  

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