2016-07-26 104 views
2

在我的项目我有网址 这样的:HttpURLConnection的响应不工作

localhost:8080/myproject/examples/12 

它包含的Json values..To进入这个领域需要把访问密钥头。

现在,我所做的是:

private String doHttpUrlConnectionAction(String desiredUrl) 
    throws Exception 
    { 
    URL url = null; 
    BufferedReader reader = null; 
    StringBuilder stringBuilder; 

    try 
    { 
     // create the HttpURLConnection 
     url = new URL(desiredUrl); 
     HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 

     // just want to do an HTTP GET here 
     connection.setRequestMethod("GET"); 
    // connection.setRequestProperty("Content-Type","application/json"); 
     connection.setRequestProperty("API-KEY", "value"); 

     // uncomment this if you want to write output to this url 
     connection.setDoOutput(true); 

     // give it 15 seconds to respond 
     connection.setReadTimeout(15*1000); 
     connection.connect(); 

     // read the output from the server 
    // reader = new BufferedReader(new InputStreamReader(connection.getInputStream())); 


     StringBuilder sb = new StringBuilder(); 
     BufferedReader rd = new BufferedReader(new InputStreamReader(connection.getInputStream())); 
     String line; 
     while ((line = rd.readLine()) != null) { 
      sb.append(line); 
     } 
     return sb.toString(); 

    } 
    catch (Exception e) 
    { 
     e.printStackTrace(); 
     throw e; 
    } 
    finally 
    { 
     // close the reader; this can throw an exception too, so 
     // wrap it in another try/catch block. 
     if (reader != null) 
     { 
     try 
     { 
      reader.close(); 
     } 
     catch (IOException ioe) 
     { 
      ioe.printStackTrace(); 
     } 
     } 
    } 
    } 

此代码返回输出:正常

Response Code : 200 
<table border="0" cellpadding="4" cellspacing="0"><thead><tr><th>status</th><th>statusCode</th><th>data</th></tr></thead><tbody><tr><td statusCode="200" status="1">Array</td></tr></tbody></table> 

但是,当我在访问这个httclient代码,我得到的值..

public String ReadHttpResponse(String url){ 
     StringBuilder sb= new StringBuilder(); 
     HttpClient client= new DefaultHttpClient();  
     HttpGet httpget = new HttpGet(url); 
     httpget.addHeader("API-KEY", "value"); 
     try { 
      HttpResponse response = client.execute(httpget); 
      StatusLine sl = response.getStatusLine(); 
      int sc = sl.getStatusCode(); 
      if (sc==200) 
      { 
       HttpEntity ent = response.getEntity(); 
       InputStream inpst = ent.getContent(); 
       BufferedReader rd= new BufferedReader(new InputStreamReader(inpst)); 
       String line; 
       while ((line=rd.readLine())!=null) 
       { 
        sb.append(line); 
       } 
      // System.out.println(sb.toString()); 

      } 
      else 
      { 
       System.out.println("I didn't get the response!"); 


      } 
     } catch (ClientProtocolException e) { 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     return sb.toString(); 
    } 

在这里,我得到正确的输出..

HttpUrlConnection问题在哪里?我在这里做错了什么?我必须使用HttpUrlConnection。请大家帮助我..

+0

URL是否工作浏览器? –

+1

您必须在请求中添加此标头:urlConnection.setRequestProperty(“Content-Type”,“application/json; odata = verbose”); urlConnection.setRequestProperty(“Accept”,“application/json; odata = verbose”); –

+0

你的代码没有问题,因为你从服务器端获得200。服务器端存在问题,因此您从服务器端获取html代码。请检查服务器端以解决此问题。 – BarmanInfo

回答

1

您可以为请求POST和GET制作这样的代码逻辑。它有助于减少代码的复杂性。您可以为此创建一个方法,并根据GET和POST方法的需要将参数传递给它。

HttpURLConnection urlConnection = null; 
    try { 
     // http client 

     murl=new URL(url); 
     urlConnection = (HttpURLConnection) murl.openConnection(); 

     urlConnection.setRequestProperty("Content-Type", "application/json;odata=verbose"); 
     urlConnection.setRequestProperty("Accept", "application/json;odata=verbose"); 

     // Checking http request method type 
     if (method == POST) { 
      urlConnection.setRequestMethod("POST"); 
      urlConnection.setDoInput(true); 
      urlConnection.setDoOutput(true); 



      if(!jsondata.equals("null")) { 
       OutputStream os = urlConnection.getOutputStream(); 
       BufferedWriter writer = new BufferedWriter(
         new OutputStreamWriter(os, "UTF-8")); 
       writer.write(jsondata); 
       writer.flush(); 
       writer.close(); 
       os.close(); 
      } 


     } else if (method == GET) { 
      // appending params to url 
      urlConnection.setRequestMethod("GET"); 

     } 
     resCode = urlConnection.getResponseCode(); 
     Log.i("TAG", "response code=>" + resCode);