SpringXmlrpcServiceExporter for xmlrpc3.x

      我们的项目用到了xmlrpc,不过还是用的2.x版本的。由于xmlrpc3.x地推出。提供了NULL,Serializable等的支持，将原来的Hashtable改成了Map,Vector改成了List。都是不错的进步。所以我们决定从xmlrpc2.x升级到xmlrpc3.x.
      在spring里面有几个ServiceExporter，org.springframework.remoting.rmi.RmiServiceExporter、org.springframework.remoting.caucho.HessianServiceExporter、org.springframework.remoting.caucho.BurlapServiceExporter。不过没有xmlrpc的serviceExporter，原来我们是自己封装的XmlRpcServer,用servlet提供服务。(eg:http://localhost:8080/community/service/xmlrpc)没有和spring集成虽然用了spring。
    考虑到spring的便利以及配置的同意我决定将xmlrpcService放入spring中。xmlrpc3.x和xmlrpc2.x的代码基本上没有一样的。改了很多东西。除了类型变化之外，还添加了对异常的支持。详细信息请参照xmlrpc3.x源代码。
XmlRpcServiceExporter.java

package  com.jdkcn.xmlrpc;

import  javax.servlet.ServletException;

/**
 *  @author  <a href="mailto:rory.cn@gmail.com">somebody</a>
 *  @since  2006-9-27 03:59:22 pm
 *  @version  $Id XmlRpcServiceExporter.java$
  */
public   class  XmlRpcServiceExporter  extends  RemoteExporter  implements
        Controller, InitializingBean {
    
     private  XmlRpcServletServer server;
    
     public  String serviceName;
    
     public  Resource configFile;
    
     public  Boolean enabledForExtensions;
    
     public   void  setEnabledForExtensions(Boolean enabledForExtensions) {
         this .enabledForExtensions  =  enabledForExtensions;
    }

     public   void  setConfigFile(Resource configFile) {
         this .configFile  =  configFile;
    }

     public  String getServiceName() {
         return  serviceName;
    }

     public   void  setServiceName(String serviceName) {
         this .serviceName  =  serviceName;
    }

     public  XmlRpcServletServer getXmlRpcServletServer() {
         return  server;
    }
    
     /*  (non-Javadoc)
     * @see org.springframework.web.servlet.mvc.Controller#handleRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
      */
     public  ModelAndView handleRequest(HttpServletRequest request,
            HttpServletResponse response)  throws  Exception {
         if  ( ! WebContentGenerator.METHOD_POST.equals(request.getMethod())) {
             throw   new  ServletException( " XmlRpcServiceExporter only supports POST requests " );
        }
        server.execute(request, response);
         return   null ;
    }

     /*  (non-Javadoc)
     * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
      */
     public   void  afterPropertiesSet()  throws  Exception {
        server  =   new  XmlRpcServletServer();
        server.setHandlerMapping(newXmlRpcHandlerMapping());
         if  (enabledForExtensions != null ) {
            ((XmlRpcServerConfigImpl) server.getConfig()).setEnabledForExtensions(enabledForExtensions.booleanValue());
        }
        
    }

     /**  Creates a new handler mapping. The default implementation loads
     * a property file from the resource
     * 
      */
     protected  XmlRpcHandlerMapping newXmlRpcHandlerMapping()  throws  XmlRpcException {
        
        SpringHandlerMapping mapping  =   new  SpringHandlerMapping(getServiceInterface());
        mapping.addHandler(getServiceName(), getServiceInterface());
        mapping.setTagetObject(getProxyForService());
         return  mapping;
    }
    
}

spring配置文件

     < bean  id ="accountService"   class ="com.jdkcn.service.impl.AccountServiceImpl" >
     </ bean >
         < bean  name ="rpcAccountService"  class ="com.jdkcn.xmlrpc.XmlRpcServiceExporter" >
         < property  name ="service" >
             < ref  bean ="accountService" />
         </ property >
         < property  name ="serviceName" >
             < value > jdkcn.accountService </ value >
         </ property >
         < property  name ="enabledForExtensions" >
             < value > true </ value >
         </ property >
         < property  name ="serviceInterface" >
             < value > com.jdkcn.service.AccountService </ value >
         </ property >
     </ bean >

然后映射一个地址就可以通过xmlrpc访问服务了

     < bean  id ="urlMapping"  class ="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" >
         < property  name ="mappings" >
             < props >  
                 < prop  key ="/account" > rpcAccountService </ prop >
             </ props >
         </ property >
     </ bean >

web.xml

     < context-param >
         < param-name > contextConfigLocation </ param-name >
         < param-value >
            classpath:spring/global.xml
         </ param-value >
     </ context-param >
    
     < listener >
         < listener-class > org.springframework.web.context.ContextLoaderListener </ listener-class >
     </ listener >

         < servlet >
             < servlet-name > service </ servlet-name >
             < servlet-class > org.springframework.web.servlet.DispatcherServlet </ servlet-class >
         </ servlet >

         < servlet-mapping >
             < servlet-name > service </ servlet-name >
             < url-pattern > /service/xmlrpc3/* </ url-pattern >
         </ servlet-mapping >

然后我们的service地址就是这样的http://localhost:8080/service/xmlrpc3/account

希望对大家有用，这里提供project下载。包含一个client程序。com.jdkcn.xmlrpc.Client

点击下载完整代码

   除经特别注明外,本文章版权归 莫多泡泡所有.
署名,非商业用途,保持一致.    somebody(莫多)

莫多 2006-10-22 16:12 发表评论