今天我做了关于Android客户端请求带有web服务的服务器的测试。但是这个原因：＆＃34; result =（SoapPrimitive）envelope.getResponse（）;＆＃34;是默认的。错误是：
如果没有有效的操作参数，则无法处理请求。请提供一个 有效的肥皂行动。
客户代码：
package com.example.helloworld_webservicewithksoap;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.ksoap2.SoapEnvelope;
import org.ksoap2.SoapFault;
import org.ksoap2.serialization.SoapObject;
import org.ksoap2.serialization.SoapPrimitive;
import org.ksoap2.serialization.SoapSerializationEnvelope;
import org.ksoap2.transport.HttpResponseException;
import org.ksoap2.transport.HttpTransportSE;
import org.xmlpull.v1.XmlPullParserException;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView tvMessage;
final String METHOD_HELLO_WORLD = "HelloWorld";
// final String METHOD_CheckInLockPark = "checkin_lockpark";
//服务器链接
final String WEB_SERVICE_URL = "http://120.24.254.42:802/OperData.asmx";
final String Namespace = "http://tempuri.org";//命名空间
Button button1;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initBtn();
initTv();
}
private void initTv(){
tvMessage = (TextView) this.findViewById(R.id.tvMessage);
}
private void initBtn(){
button1 = (Button)findViewById(R.id.helloworldbutton);
button1.setOnClickListener( new OnClickListener() {
@Override
public void onClick(View view) {
Map<String, String> values = new HashMap<String, String>();
values.put("msg", "这是Android手机发出的信息");
Request(METHOD_HELLO_WORLD);
}
});
}
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
/**
* 调用WebService
*
* @return WebService的返回值
*
*/
public String CallWebService(String MethodName, Map<String, String> Params) {
// 1、指定webservice的命名空间和调用的方法名
SoapObject request = new SoapObject(Namespace, MethodName);
// 2、设置调用方法的参数值，如果没有参数，可以省略，
if (Params != null) {
Iterator iter = Params.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry entry = (Map.Entry) iter.next();
request.addProperty( (String) entry.getKey(),
(String) entry.getValue() );
}
}
// 3、生成调用Webservice方法的SOAP请求信息。该信息由SoapSerializationEnvelope对象描述
SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(
SoapEnvelope.VER12);
envelope.bodyOut = request;
// c#写的应用程序必须加上这句
envelope.dotNet = true;
HttpTransportSE ht = new HttpTransportSE(WEB_SERVICE_URL);
// 使用call方法调用WebService方法
try {
ht.call(null, envelope);
} catch (HttpResponseException e) {
Log.e("----HttpResponseException异常---", e.getMessage());
e.printStackTrace();
} catch (IOException e) {
Log.e("----IOException异常---", e.getMessage());
e.printStackTrace();
} catch (XmlPullParserException e) {
Log.e("----XmlPullParserException异常---", e.getMessage());
e.printStackTrace();
}
try {
final SoapPrimitive result = (SoapPrimitive) envelope.getResponse();
if (result != null) {
Log.d("----收到的回复----", result.toString());
return result.toString();
}
} catch (SoapFault e) {
Log.e("----发生错误---", e.getMessage());
e.printStackTrace();
}
return null;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
/**
* 执行异步任务
*
* @param params
* 方法名+参数列表（哈希表形式）
*/
public void Request( Object... params) {
new AsyncTask<Object, Object, String>() {
@Override
protected String doInBackground(Object... params) {
System.out.println("Params的长度"+params.length);
if (params != null && params.length == 2) {
return CallWebService( (String) params[0],
(Map<String, String>) params[1] );
} else if (params != null && params.length == 1) {
return CallWebService((String) params[0], null);
} else {
return null;
}
}
protected void onPostExecute(String result) {
if (result != null) {
tvMessage.setText("服务器回复的信息 : " + result);
}
};
}.execute(params);
}
}
服务器代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using ConcSoft.Database;
using System.Data;
using System.Collections;
namespace ECM
{
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.ComponentModel.ToolboxItem(false)]
// 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。
// [System.Web.Script.Services.ScriptService]
public class OperData : System.Web.Services.WebService
{
[WebMethod]
public string HelloWorld()
{
return "Hello World";
}
}