dwr3.0与Spring mvc的全注解集成方法

用上面的方法集成虽然可行，但是比较麻烦，需要定义dwrServlet以及把要注册的类写到web.xml中，而且实际应用中会出现注册的远程类里Autowired的bean不能实例化的问题。dwr3.0可以通过全注解的方式，极大的简化了配置，所有xml配置加在一起不超过20行，而且使用更加简单，bean注入的问题也都解决。配置步骤如下：

1. web.xml的配置文件中，在默认的DispatcherServlet的mapping里加上dwr
   
   

   < servlet > servlet-name >appServlet</ > servlet-class >org.springframework.web.servlet.DispatcherServlet</ > init-param > param-name >contextConfigLocation</ > param-value >/WEB-INF/spring/appServlet/appServlet-context.xml</ > </ > load-on-startup >1</ > > servlet-mapping > > url-pattern >/</ > > > > >/dwr/*</ > >

2. dispatcherServlet的配置文件appServlet-context.xml
   
   

   <?xml version="1.0" encoding"UTF-8"?>

   beans:beans xmlns "<a href="http://www.springframework.org/schema/mvc" "="" style="outline: none; color: rgb(0,109,175); border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.2em !important; margin: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-size: 1em !important; min-height: auto !important;">http://www.springframework.org/schema/mvc"

   xmlns:xsi "<a href="http://www.w3.org/2001/XMLSchema-instance" "="" style="outline: none; color: rgb(0,175); border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.2em !important; margin: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-size: 1em !important; min-height: auto !important;">http://www.w3.org/2001/XMLSchema-instance" xmlns:beans "<a href="http://www.springframework.org/schema/beans" "="" style="outline: none; color: rgb(0,175); border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.2em !important; margin: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-size: 1em !important; min-height: auto !important;">http://www.springframework.org/schema/beans"

   xmlns:context "<a href="http://www.springframework.org/schema/context" "="" style="outline: none; color: rgb(0,175); border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.2em !important; margin: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-size: 1em !important; min-height: auto !important;">http://www.springframework.org/schema/context"

   xmlns:dwr "<a href="http://www.directwebremoting.org/schema/spring-dwr" "="" style="outline: none; color: rgb(0,175); border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.2em !important; margin: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-size: 1em !important; min-height: auto !important;">http://www.directwebremoting.org/schema/spring-dwr"

   xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd

   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd

   http://www.directwebremoting.org/schema/spring-dwr <a href="http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd" "="" style="outline: none; color: rgb(0,175); border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.2em !important; margin: 0px !important; overflow: visible !important; padding: 0px !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; font-size: 1em !important; min-height: auto !important;">http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd">

   <!-- DispatcherServlet Context: defines this servlet's request-processing

   infrastructure -->

   <!-- Enables the Spring MVC @Controller programming model -->

   annotation-driven />

   <!-- Handles HTTP GET requests for /resources/** by efficiently serving

   up static resources in the ${webappRoot}/resources directory -->

   resources mapping "/resources/**" location "/resources/" />

   interceptors beans:bean class "com.panguso.op.data.manager.interceptor.LogInterceptor" ></ beans:bean >

   >

   <!-- Resolves views selected for rendering by @Controllers to .jsp resources

   in the /WEB-INF/views directory -->

   beans:bean

   class "org.springframework.web.servlet.view.InternalResourceViewResolver" >

   beans:property name "prefix" value "/WEB-INF/views/" />

   "suffix" ".jsp" />

   >

   <!--<view-controller path="/" view-name="index" /> -->

   context:component-scan base-package "com.panguso.op.data.manager" />

   <!-- 从这行往下是要添加的 -->

   context:annotation-config />

   dwr:configuration />

   dwr:annotation-config />

   dwr:url-mapping />

   dwr:controller id "dwrController" debug "true" >

   dwr:config-param "allowScriptTagRemoting"

   value />

   "crossDomainSessionSecurity"

   "false" />

   dwr:controller >

   beans:bean

   "org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" >

   "order" "1" />

   >

   beans:bean

   "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" >

   "2" />

   >

   beans:bean

   "org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" >

   "3" />

   "true" "alwaysUseFullPath" />

   "mappings" >

   beans:props >

   beans:prop key "/dwr/**" >dwrController</ beans:prop >

   >

   beans:property >

   >

   <!--添加结束-->

   beans:beans >

3. 配置完毕，使用的方法和上文类似，注意的是@RemoteProxy标注的远程类一定要加上name属性，不然启动会报错，如：
   
   

   @Service

   @RemoteProxy (name = "GeneralContentManagementService" )

   public class GeneralContentManagementService {

   @RemoteMethod

   void aaa()

   {

   }

   }

（编辑：李大同）

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