调用webservice出现javax.xml.bind.UnmarshalException解决办法

最近在做Android使用ksoap2包调用Webservice，自己写了Webservice发布在Jboss上做测试时， 
出现javax.xml.bind.UnmarshalException，异常内容为

 Caused by: javax.xml.bind.UnmarshalException: unexpected element (uri:"http://apj.vote.webservice.com", local:"arg0"). Expected elements are <{}arg0>

原因：服务器端的Webservice的接口方法的参数没有设置好参数名称和命名空间 

解决办法，使用@WebParam注解添加参数名称和命名空间 
例如： 
接口代码： 

 package com.apj.webservice;

 import javax.jws.WebMethod;
 import javax.jws.WebParam;
 import javax.jws.WebResult;
 import javax.jws.WebService;


 @WebService(targetNamespace = "http://apj.vote.com", name = "VoteWebService", serviceName = "VoteWebService")
 public interface VoteWebService {
     @WebResult(name="return",targetNamespace="http://apj.vote.com")
     @WebMethod
     public String vote(@WebParam(name = "teamid",targetNamespace="http://apj.vote.com") long teamid);

 }

实现类 

 package com.apj.webservice.impl;

 import javax.ejb.Remote;
 import javax.ejb.Stateless;
 import javax.inject.Inject;
 import javax.jws.WebMethod;
 import javax.jws.WebParam;
 import javax.jws.WebResult;
 import javax.jws.WebService;
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;

 import org.jboss.logging.Logger;

 import com.apj.model.Team;
 import com.apj.webservice.VoteWebService;

 @WebService(targetNamespace = "http://apj.vote.com", name = "VoteWebService", serviceName = "VoteWebService")
 @Stateless
 @Remote(VoteWebService.class)
 public class VoteWebServiceImpl implements VoteWebService {

     @WebResult(name="return",targetNamespace="http://apj.vote.com")
     @WebMethod
     public String vote(@WebParam(name = "teamid",targetNamespace="http://apj.vote.com") long teamid) {

         System.out.println("team id ====" + teamid);

         return teamid + "";

     }

 }