我正在编写一个Android 2.2应用程序，该应用程序将JSON严格性过帐到ReSTfull Web服务。

Fiddler对Web服务的调用具有与预期相同的Json返回，而对ASPX Web应用程序具有与预期的相同Json返回。

当我查看服务器日志时，可以看到服务器使用307重定向响应初始POST动词，然后立即响应GET和405错误。

Fiddler和aspx应用程序记录一个307重定向的POST，然后立即另一个POST和200 OK。

到底是怎么回事？

这是主要活动：

package com.altaver.android_PostJson2;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;

public class PostJson extends Activity {
     private static final String TAG = "MainActivity";
     private static final String URL = "http://web2.altaver.com/sdz/avReSTfulLogin1";

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        JSONObject jsonObjSend = new JSONObject();

        try {
         jsonObjSend.put("Pass", "sz");
         jsonObjSend.put("User", "szechman");


         Log.i(TAG, jsonObjSend.toString(2));

        } catch (JSONException e) {
            e.printStackTrace();
        }

        JSONObject jsonObjRecv = HttpClient.SendHttpPost(URL, jsonObjSend);

//examine JSONObject later
    }
}

这是进行Web服务调用的类代码：

package com.altaver.android_PostJson2;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;

import android.util.Log;

public class HttpClient {

    private static final String TAG = "HttpClient";


    public static JSONObject SendHttpPost(String URL, JSONObject jsonObjSend) {

          try {
           DefaultHttpClient httpclient = new DefaultHttpClient();

           HttpClientParams.setRedirecting(httpclient.getParams(), true);

           //added cookie policy, wild shot in the dark
           //httpclient.getParams().setParameter(ClientPNames.COOKIE_POLICY, >CookiePolicy.RFC_2109);

           HttpPost httpPostRequest = new HttpPost(URL);

           StringEntity se;
           se = new StringEntity(jsonObjSend.toString());

           // Set HTTP parameters
           httpPostRequest.setEntity(se);

           //httpPostRequest.setHeader("User-Agent", >"com.altaver.android_PostJson2");
           httpPostRequest.setHeader("User-Agent", "Mozilla/5.0 (Windows; U; >Windows NT 5.1; en-US; rv:1.9.2.3) Gecko/20100401");

           httpPostRequest.setHeader("Accept", "application/json");
           httpPostRequest.setHeader("Content-Type", "application/json");

           long t = System.currentTimeMillis();
           HttpResponse response = (HttpResponse) >httpclient.execute(httpPostRequest);
           Log.i(TAG, "HTTPResponse received in [" + >(System.currentTimeMillis()-t) + "ms]");

           HttpEntity entity = response.getEntity();

           if (entity != null) {
            InputStream instream = entity.getContent();
            Header contentEncoding = response.getFirstHeader("Content-Encoding");


            String resultString= convertStreamToString(instream);
            instream.close();
            resultString = resultString.substring(1,resultString.length()-1); // >remove wrapping "[" and "]"

            JSONObject jsonObjRecv = new JSONObject(resultString);
            Log.i(TAG,"<jsonobject>\n"+jsonObjRecv.toString()+"\n</jsonobject>");

            return jsonObjRecv;
           }

          }
          catch (Exception e)
          {
           e.printStackTrace();
          }
          return null;
         }

    private static String convertStreamToString(InputStream is) {
          /*
           * To convert the InputStream to String we use the >BufferedReader.readLine()
           * method. We iterate until the BufferedReader return null which means
           * there's no more data to read. Each line will appended to a >StringBuilder
           * and returned as String.
           * 
           * (c) public domain: http://senior.ceng.metu.edu.tr/2009/praeda/2009/01>/11/a-simple-restful-client-at-android/
           */
          BufferedReader reader = new BufferedReader(new InputStreamReader(is));
          StringBuilder sb = new StringBuilder();

          String line = null;
          try {
           while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
           }
          } catch (IOException e) {
           e.printStackTrace();
          } finally {
           try {
            is.close();
           } catch (IOException e) {
            e.printStackTrace();
           }
          }
          return sb.toString();
    }
}