java 调用 webservice问题

import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Vector;  import javax.xml.namespace.QName;  import org.apache.axis.client.Call; import org.apache.axis.client.Service;  public class Aa  {     private String url="http://10.74.55.17:88/service.asmx?wsdl";
    private String soapaction="http://tempuri.org/";          public Aa()     {         String UcId = "90900187"; 
        Service service=new Service();         try{             Call call=(Call)service.createCall();             call.setTargetEndpointAddress(url);             call.setOperationName(new QName(soapaction,"GetRecordUrl")); //设置要调用哪个方法             call.addParameter(new QName(soapaction,"UcId"),org.apache.axis.encoding.XMLType.XSD_STRING,javax.xml.rpc.ParameterMode.IN); 
            call.addParameter(new QName(soapaction,"GetRecordUrlResult"),org.apache.axis.encoding.XMLType.XSD_STRING,javax.xml.rpc.ParameterMode.OUT); 
            call.setReturnType(org.apache.axis.encoding.XMLType.XSD_STRING);//（标准的类型）                          call.setUseSOAPAction(true);             call.setSOAPActionURI(soapaction + "GetRecordUrl");     
            String result = (String)call.invoke(new Object[]{UcId});
            System.out.println("result is ss"+result);
                     }catch(Exception ex)         {         ex.printStackTrace();         }             }     public static void main(String args[])     {         Aa pw=new Aa();     } } 
／／＝＝＝＝＝＝问题是
不管UcId 换成其他的，result 的值都是一样的，
在webservice网页中取result正确的．