关于webservice客户端问题

一见穿心

我写了一个webservice客户端，但是执行的时候就报错，查了很多资料也没找到是什么原因，请熟悉的朋友帮忙看看吧。谢谢了先！webservice服务端成功发布。
WS客户端源码：

1. public static void main(String[] args) throws MalformedURLException, Exception {
   
2.                 System.out.println("Test begin");
   
3.                 FpXxRequest fpxxReq = new FpXxRequest();
   
4.                 FpXxResponse fpxxres = new FpXxResponse();
   
5.                                
   
6.                 Client client = new Client(new URL("http://127.0.0.1:7001/WebRoot/services/IvrWebService?wsdl"));
   
7.                 Object[] results = client.invoke("findFpXx", new Object[] { fpxxReq });
   
8.                
   
9.                 System.out.println("Test end");
   
10.         }

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报错如下：

1. Exception in thread "main" org.codehaus.xfire.fault.XFireFault: Unable to write 'com.zrar.ivrwebservice.FpXxRequest@eac5a' [com.zrar.ivrwebservice.FpXxRequest]. Type is unknown.
   
2.         at org.codehaus.xfire.aegis.type.basic.ObjectType.handleNullType(ObjectType.java:234)
   
3.         at org.codehaus.xfire.aegis.type.basic.ObjectType.writeObject(ObjectType.java:169)
   
4.         at org.codehaus.xfire.aegis.AegisBindingProvider.writeParameter(AegisBindingProvider.java:200)
   
5.         at org.codehaus.xfire.service.binding.AbstractBinding.writeParameter(AbstractBinding.java:273)
   
6.         at org.codehaus.xfire.service.binding.DocumentBinding.writeMessage(DocumentBinding.java:65)
   
7.         at org.codehaus.xfire.soap.SoapSerializer.writeMessage(SoapSerializer.java:80)
   
8.         at org.codehaus.xfire.transport.http.HttpChannel.writeWithoutAttachments(HttpChannel.java:56)
   
9.         at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.getByteArrayRequestEntity(CommonsHttpMessageSender.java:313)
   
10.         at org.codehaus.xfire.transport.http.CommonsHttpMessageSender.send(CommonsHttpMessageSender.java:251)
    
11.         at org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:123)
    
12.         at org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:48)
    
13.         at org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
    
14.         at org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:131)
    
15.         at org.codehaus.xfire.client.Invocation.invoke(Invocation.java:75)
    
16.         at org.codehaus.xfire.client.Client.invoke(Client.java:335)
    
17.         at org.codehaus.xfire.client.Client.invoke(Client.java:349)
    
18.         at WSTest.main(WSTest.java:32)

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感觉提示显示FpXxRequest这个类型未知，但是在客户端我已经吧FpXxRequest相关的类都加进来了。