axis2.AxisFault: 服务器无法处理请求 ---> 未将对象引用设置到对象的实例

 package axiom;

import java.util.Date;

import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.soap.soAP11Constants;
import org.apache.axis2.AxisFault;
import org.apache.axis2.Constants;
import org.apache.axis2.addressing.EndpointReference;
import org.apache.axis2.client.Options;
import org.apache.axis2.client.ServiceClient;
import org.apache.axis2.transport.http.HTTPConstants;
import org.apache.axis2.transport.http.HttpTransportProperties.ProxyProperties;

public class WeatherAxiomClient {

 private static EndpointReference targetEPR =
        new EndpointReference(
                              "http://www.webxml.com.cn/WebServices/WeatherWebService.asmx");
 
 private static OMFactory fac = OMAbstractFactory.getoMFactory();
 static OMNamespace omNs = fac.createOMNamespace("http://WebXml.com.cn/","tns");
 
 public static void main(String args[]) throws AxisFault{
  Date start=new Date();
        System.out.println("start:"+start);
        ServiceClient sender = new ServiceClient();
       
        /****************************City**************************************/
        //sender.setoptions(buildOptions("http://WebXml.com.cn/getSupportCity"));
        //OMElement result = sender.sendReceive(buildParam("getSupportCity",new String[]{"byProvinceName"},new String[]{"All"}));
        //查询本天气预报Web Services支持的国内外城市或地区信息
        /**************************************************************************/
       
        /****************************Province**************************************/
        //sender.setoptions(buildOptions("http://WebXml.com.cn/getSupportProvince"));
        //OMElement result = sender.sendReceive(null);
        //调用得到province方法,获得本天气预报Web Services支持的洲、国内外省份和城市信息
        /**************************************************************************/
       
        /****************************DataSet**************************************/
        //sender.setoptions(buildOptions("http://WebXml.com.cn/getSupportDataSet"));
        //OMElement result = sender.sendReceive(null);
        //获得本天气预报Web Services支持的洲、国内外省份和城市信息
        /**************************************************************************/
       
       
        /****************************Weather**************************************/
        //sender.setoptions(buildOptions("http://WebXml.com.cn/getWeatherbyCityName"));
        //OMElement result = sender.sendReceive(buildParam("getWeatherbyCityName",new String[]{"theCityName"},new String[]{"杭州"}));
        //根据城市或地区名称查询获得未来三天内天气情况、现在的天气实况、天气和生活指数
        /**************************************************************************/
       
       
       
        sender.setoptions(buildOptions("http://WebXml.com.cn/getWeatherbyCityNamePro"));
        OMElement result = sender.sendReceive(buildParam("getWeatherbyCityNamePro",new String[]{"theCityName","theUserID"},new String[]{"杭州","01"}));
       
        System.out.println(result);
        Date end=new Date();
        System.out.println("end:"+end);
        System.out.println("between:"+(end.getTime()-start.getTime()));
 }
 /**
  * @see 调用webservice得到天气预报支持的城市
  * @return
  */
 public static  OMElement buildParam(String method,String[] arg,String[] val) {
        OMElement data = fac.createOMElement(method,omNs);
        for(int i=0;i<arg.length;i++){
        OMElement inner = fac.createOMElement(arg[i],omNs);
        inner.setText(val[i]);
        data.addChild(inner);
        }
        return data;

 }
 

 /**
  * @see 设置连接属性
  * @return
  */
 public static Options  buildOptions(String action){
  Options options = new Options();
        options.setSoapVersionURI(SOAP11Constants.soAP_ENVELOPE_NAMESPACE_URI);
        options.setAction("http://WebXml.com.cn/getSupportCity");
        options.setTo(targetEPR);
        options.setTransportInProtocol(Constants.TRANSPORT_HTTP);
        options.setProperty(HTTPConstants.CHUNKED,"false");//设置不受限制.
        options.setProperty(HTTPConstants.PROXY,buildProxy());
        options.setProperty(Constants.Configuration.HTTP_METHOD,HTTPConstants.HTTP_METHOD_POST);
        //options.setAction(action);
        return options;

 }  /**  * @see 设置代理属性  * @return  */ public static ProxyProperties buildProxy(){     ProxyProperties proxyProperties=new ProxyProperties();        proxyProperties.setProxyName("172.19.18.22");        proxyProperties.setProxyPort(8080);        return proxyProperties; }  }问题出在我注释的确一行.一定要设置Action.否则服务器无法处理请求,不知道你引用的是哪个方法,所以报出未将对象引用设置到对象的实例