Wysyłanie żądania HTTP POST JSON z Androida

Question

Korzystam z poniższego kodu, aby wysłać żądanie http POST, które wysyła obiekt do usługi WCF. Działa to dobrze, ale co się stanie, jeśli moja usługa WCF będzie wymagać innych parametrów? Jak mogę je wysłać z mojego klienta Android?

Jest to kod pisałem do tej pory:

StringBuilder sb = new StringBuilder(); 

String http = "http://android.schoolportal.gr/Service.svc/SaveValues"; 


HttpURLConnection urlConnection=null; 
try { 
    URL url = new URL(http); 
    urlConnection = (HttpURLConnection) url.openConnection(); 
    urlConnection.setDoOutput(true); 
    urlConnection.setRequestMethod("POST"); 
    urlConnection.setUseCaches(false); 
    urlConnection.setConnectTimeout(10000); 
    urlConnection.setReadTimeout(10000); 
    urlConnection.setRequestProperty("Content-Type","application/json"); 

    urlConnection.setRequestProperty("Host", "android.schoolportal.gr"); 
    urlConnection.connect(); 

    //Create JSONObject here 
    JSONObject jsonParam = new JSONObject(); 
    jsonParam.put("ID", "25"); 
    jsonParam.put("description", "Real"); 
    jsonParam.put("enable", "true"); 
    OutputStreamWriter out = new OutputStreamWriter(urlConnection.getOutputStream()); 
    out.write(jsonParam.toString()); 
    out.close(); 

    int HttpResult =urlConnection.getResponseCode(); 
    if(HttpResult ==HttpURLConnection.HTTP_OK){ 
     BufferedReader br = new BufferedReader(new InputStreamReader( 
      urlConnection.getInputStream(),"utf-8")); 
     String line = null; 
     while ((line = br.readLine()) != null) { 
      sb.append(line + "\n"); 
     } 
     br.close(); 

     System.out.println(""+sb.toString()); 

    }else{ 
      System.out.println(urlConnection.getResponseMessage()); 
    } 
} catch (MalformedURLException e) { 

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

    e.printStackTrace(); 
    } catch (JSONException e) { 
    // TODO Auto-generated catch block 
    e.printStackTrace(); 
}finally{ 
    if(urlConnection!=null) 
    urlConnection.disconnect(); 
} 

Answer 1

parametry umieszczania Korzystanie Post: -

URL url; 
URLConnection urlConn; 
DataOutputStream printout; 
DataInputStream input; 
url = new URL (getCodeBase().toString() + "env.tcgi"); 
urlConn = url.openConnection(); 
urlConn.setDoInput (true); 
urlConn.setDoOutput (true); 
urlConn.setUseCaches (false); 
urlConn.setRequestProperty("Content-Type","application/json"); 
urlConn.setRequestProperty("Host", "android.schoolportal.gr"); 
urlConn.connect(); 
//Create JSONObject here 
JSONObject jsonParam = new JSONObject(); 
jsonParam.put("ID", "25"); 
jsonParam.put("description", "Real"); 
jsonParam.put("enable", "true"); 

Część której brakowało to w poniższym ... czyli następująco ..

// Send POST output. 
printout = new DataOutputStream(urlConn.getOutputStream()); 
printout.writeBytes(URLEncoder.encode(jsonParam.toString(),"UTF-8")); 
printout.flush(); 
printout.close(); 

reszta rzeczy ty mogę to zrobić.

Answer 2

spróbować coś takiego ciosu:

SString otherParametersUrServiceNeed = "Company=acompany&Lng=test&MainPeriod=test&UserID=123&CourseDate=8:10:10"; 
String request = "http://android.schoolportal.gr/Service.svc/SaveValues"; 

URL url = new URL(request); 
HttpURLConnection connection = (HttpURLConnection) url.openConnection(); 
connection.setDoOutput(true); 
connection.setDoInput(true); 
connection.setInstanceFollowRedirects(false); 
connection.setRequestMethod("POST"); 
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
connection.setRequestProperty("charset", "utf-8"); 
connection.setRequestProperty("Content-Length", "" + Integer.toString(otherParametersUrServiceNeed.getBytes().length)); 
connection.setUseCaches (false); 

DataOutputStream wr = new DataOutputStream(connection.getOutputStream()); 
wr.writeBytes(otherParametersUrServiceNeed); 

    JSONObject jsonParam = new JSONObject(); 
jsonParam.put("ID", "25"); 
jsonParam.put("description", "Real"); 
jsonParam.put("enable", "true"); 

wr.writeBytes(jsonParam.toString()); 

wr.flush(); 
wr.close(); 

Referencje:

1. http://www.xyzws.com/Javafaq/how-to-use-httpurlconnection-post-data-to-web-server/139
2. Java - sending HTTP parameters via POST method easily