如何使HTTPS向Android发布.NET服务器请求？

Question

我正在开发Android应用程序，并且一位朋友正在研究服务的更复杂的.NET服务器代码。我被告知，现在，我通过POST发送给他的JSON数据以及我从他那里收到的更大的JSON数据必须通过HTTPS。我发现的所有教程都只是用于标准HTTP，或者需要编写几个类来处理安全连接。我对Android开发很陌生，因此不太理想。我甚至不确定当前的代码是否会在没有安全连接的情况下从服务器下载数据。

我从哪里开始？我需要做些什么改变？

我很乐意根据需要提供其他信息，我一直在为这个代码烦扰超过一个星期。请求信息时，请尽可能描述。

HttpClient.java

public class HttpClient { 

public static final String TAG = HttpClient.class.getSimpleName(); 

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

    try { 
     DefaultHttpClient httpclient = new DefaultHttpClient(); 
     HttpPost httpPostRequest = new HttpPost(URL); 

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

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

     // Get hold of the response entity (-> the data): 
     HttpEntity entity = response.getEntity(); 

     if (entity != null) { 
      // Read the content stream 
      InputStream instream = entity.getContent(); 

      // convert content stream to a String 
      String resultString= convertStreamToString(instream); 
      Log.v("After converting Stream to String", resultString); 
      instream.close(); 

      // Transform the String into a JSONObject 
      JSONObject jsonObjRecv = new JSONObject(resultString); 

      // Raw DEBUG output of our received JSON object: 
      Log.i(TAG,"<JSONObject>\n"+jsonObjRecv.toString()+"\n</JSONObject>"); 

      return jsonObjRecv; 

     } 

    } 
    catch (Exception e) 
    { 
     // More about HTTP exception handling in another tutorial. 
     // For now we just print the stack trace. 
     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(); 
} 

}

logcat的错误，在开始上的按钮点击初始化一些JSON数据（其已正确制造），然后使用HttpClient.java：

08-29 12:47:16.697: W/ActivityThread(9547): Application com.barjinx.barjinx can be debugged on port 8100... 
08-29 12:47:17.033: D/libEGL(9547): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so 
08-29 12:47:17.057: D/libEGL(9547): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so 
08-29 12:47:17.072: D/libEGL(9547): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so 
08-29 12:47:17.236: D/OpenGLRenderer(9547): Enabling debug mode 0 
08-29 12:47:27.486: D/dalvikvm(9547): GC_CONCURRENT freed 92K, 2% free 9133K/9256K, paused 16ms+9ms, total 50ms 
08-29 12:47:27.525: V/EventsActivity(9547): JSON Created: {"search":{"GeoLat":"29.7529","GeoZip":"78757","SearchTerm":"Rangers","GeoLong":"-97.7333","UserKey":"MattCoker"}} 
08-29 12:47:36.361: I/HttpClient(9547): HTTPResponse received in [8826ms] 
08-29 12:47:36.369: W/System.err(9547): org.json.JSONException: End of input at character 0 of 
08-29 12:47:36.393: D/dalvikvm(9547): GC_CONCURRENT freed 230K, 3% free 9316K/9576K, paused 3ms+9ms, total 32ms 
08-29 12:47:36.408: W/System.err(9547):  at org.json.JSONTokener.syntaxError(JSONTokener.java:450) 
08-29 12:47:36.408: W/System.err(9547):  at org.json.JSONTokener.nextValue(JSONTokener.java:97) 
08-29 12:47:36.408: W/System.err(9547):  at org.json.JSONObject.<init>(JSONObject.java:154) 
08-29 12:47:36.408: W/System.err(9547):  at org.json.JSONObject.<init>(JSONObject.java:171) 
08-29 12:47:36.408: W/System.err(9547):  at com.barjinx.barjinx.HttpClient.SendHttpPost(HttpClient.java:53) 
08-29 12:47:36.408: W/System.err(9547):  at com.barjinx.barjinx.EventsActivity$GetEventsDataTask.sendUserJSON(EventsActivity.java:172) 
08-29 12:47:36.408: W/System.err(9547):  at com.barjinx.barjinx.EventsActivity$GetEventsDataTask.doInBackground(EventsActivity.java:142) 
08-29 12:47:36.408: W/System.err(9547):  at com.barjinx.barjinx.EventsActivity$GetEventsDataTask.doInBackground(EventsActivity.java:1) 
08-29 12:47:36.408: W/System.err(9547):  at android.os.AsyncTask$2.call(AsyncTask.java:287) 
08-29 12:47:36.408: W/System.err(9547):  at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
08-29 12:47:36.416: W/System.err(9547):  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
08-29 12:47:36.416: W/System.err(9547):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
08-29 12:47:36.416: W/System.err(9547):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
08-29 12:47:36.416: W/System.err(9547):  at java.lang.Thread.run(Thread.java:856) 
08-29 12:47:36.416: W/dalvikvm(9547): threadid=11: thread exiting with uncaught exception (group=0x41e13930) 
08-29 12:47:36.424: E/AndroidRuntime(9547): FATAL EXCEPTION: AsyncTask #1 
08-29 12:47:36.424: E/AndroidRuntime(9547): java.lang.RuntimeException: An error occured while executing doInBackground() 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at android.os.AsyncTask$3.done(AsyncTask.java:299) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.util.concurrent.FutureTask.setException(FutureTask.java:219) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.util.concurrent.FutureTask.run(FutureTask.java:239) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.lang.Thread.run(Thread.java:856) 
08-29 12:47:36.424: E/AndroidRuntime(9547): Caused by: java.lang.NullPointerException 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at com.barjinx.barjinx.EventsActivity$GetEventsDataTask.sendUserJSON(EventsActivity.java:173) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at com.barjinx.barjinx.EventsActivity$GetEventsDataTask.doInBackground(EventsActivity.java:142) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at com.barjinx.barjinx.EventsActivity$GetEventsDataTask.doInBackground(EventsActivity.java:1) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at android.os.AsyncTask$2.call(AsyncTask.java:287) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  at java.util.concurrent.FutureTask.run(FutureTask.java:234) 
08-29 12:47:36.424: E/AndroidRuntime(9547):  ... 4 more 
08-29 12:48:08.900: I/Process(9547): Sending signal. PID: 9547 SIG: 9 
08-29 12:48:45.353: W/ActivityThread(9753): Application com.barjinx.barjinx is waiting for the debugger on port 8100... 
08-29 12:48:45.361: I/System.out(9753): Sending WAIT chunk 
08-29 12:48:45.486: I/dalvikvm(9753): Debugger is active 
08-29 12:48:45.564: I/System.out(9753): Debugger has connected 
08-29 12:48:45.564: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:45.768: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:45.971: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:46.166: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:46.369: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:46.572: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:46.768: I/System.out(9753): waiting for debugger to settle... 
08-29 12:48:46.971: I/System.out(9753): debugger has settled (1326) 
08-29 12:48:47.510: D/libEGL(9753): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so 
08-29 12:48:47.510: D/libEGL(9753): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so 
08-29 12:48:47.518: D/libEGL(9753): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so 
08-29 12:48:47.588: D/OpenGLRenderer(9753): Enabling debug mode 0 
08-29 12:49:09.189: D/dalvikvm(9753): GC_CONCURRENT freed 80K, 2% free 9131K/9240K, paused 5ms+3ms, total 24ms 
08-29 12:49:09.275: V/EventsActivity(9753): JSON Created: {"search":{"GeoLat":"29.7529","GeoZip":"78757","SearchTerm":"Rangers","GeoLong":"-97.7333","UserKey":"MattCoker"}} 

Answer 1

确保SSL证书在服务器上正确安装。您可以使用http://www.digicert.com/help/工具。

如果使用自签名证书，那么你必须遵循：

http://nelenkov.blogspot.com/2011/12/using-custom-certificate-trust-store-on.html