ユーザー名とパスワードを使用してHTTP POSTリクエストでJSONデータを取得できませんか？

Question

getメソッドを使って動作していますが、Postメソッドを試しても何も得られません。 私のコードを見て、どこで何をやっているのかを教えてください。
ユーザー名とパスワードを渡すパラメータが2つあります。

class AsyncT extends AsyncTask<Void, Void, Void> { 
    @Override 
    protected Void doInBackground(Void... voids) { 


     HttpClient httpclient = new DefaultHttpClient(); 
     HttpPost httppost = new HttpPost("http://192.168.1.105:8080/api/login"); 

     try { 
      // Add your data 
     List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2); 
      nameValuePairs.add(new BasicNameValuePair("username", "adii@adii.com")); 
      nameValuePairs.add(new BasicNameValuePair("password", "password")); 
      httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); 
      httppost.setHeader("content-type", "application/json; charset= utf-8"); 
      httppost.setHeader("Accept", "application/json"); 
      // Execute HTTP Post Request 
      HttpResponse response = httpclient.execute(httppost); 
      HttpEntity entity = response.getEntity(); 
      is = entity.getContent(); 


     } catch (ClientProtocolException e) { 
      // TODO Auto-generated catch block 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
     } 

     try { 
      BufferedReader reader = null; 
      if (is != null) { 
       reader = new BufferedReader(new InputStreamReader(
       //"UTF-8" "iso-8859-1" 
         is, "UTF-8"), 8); 
      } 
      StringBuilder sb = new StringBuilder(); 
      String line; 
      if (reader != null) { 
       while ((line = reader.readLine()) != null) { 
        sb.append(line).append("\n"); 


       } 
      } 
      if (is != null) { 
       is.close(); 

      } 
      result = sb.toString(); 

      Log.e("sb",result); 

     } catch (Exception e) { 
      Log.e("log_tag", "Error converting result " + e.toString()); 
     } 
     return null; 
    } 

} 

Answer 1

あなたのコードに何が間違っているのかは分かりませんが、このコードを試してみてください。それがあなたに役立つことを願っています

public String ip = "192.168.43.114"; 
public String port = "59397"; 

public HttpPost httppost; 
String ServerAddress; 
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); 

JSONObject json = new JSONObject(); 

あなたのタスクを再利用可能にするように機能を実装してみてください。

public int login(String username, String password) { 
     ServerAddress = "http://"+ip+":"+port+"/api/Users/Login"; 
     Log.v("check","inLoginMethod"); 
     try { 

      json = new JSONObject(); 
      json.put("UserName", username); 
      json.put("PassWord", password); 

      AsyncTask<String, Integer, String> asynchTask; 
      AsynchServerConnection asc = new AsynchServerConnection(); 
      asynchTask = asc.execute(""); 
      String res = asynchTask.get(); 
      Log.v("RES", res); 

      //res = jsonObject.toString(); 
      //int check = Integer.parseInt(res); 
      Log.i("checkR", res + "here"); 
      return res; 

     } catch (InterruptedException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Log.i("checkR", "Interrupted exception"); 
      return 0; 
     } catch (ExecutionException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Log.i("checkR", "ExecutionException"); 
      return 0; 
     } 
     catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
      Log.i("checkR", "JSONException"); 
      Log.i("checkR", e.getMessage()); 
      return 0; 
     } 
} 

、最終的に非同期タスククラス今

private class AsynchServerConnection extends 
      AsyncTask<String, Integer, String> { 

     @Override 
     protected void onPostExecute(String result) { 
      // TODO Auto-generated method stub 

      super.onPostExecute(result); 
     } 

     @Override 
     protected void onProgressUpdate(Integer... values) { 
      // TODO Auto-generated method stub 

      super.onProgressUpdate(values); 
     } 

     @Override 
     protected String doInBackground(String... params) { 
      // TODO Auto-generated method stub 

      String result = null; 
      try { 
       HttpClient client = new DefaultHttpClient(); 

        HttpConnectionParams.setConnectionTimeout(client.getParams(), 3000); //Timeout Limit 
        HttpResponse response; 


        try { 
         HttpPost post = new HttpPost(ServerAddress); 
         Log.v(TAG, "server Addr: "+ServerAddress); 

         StringEntity se = new StringEntity(json.toString()); 
         se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json")); 

         post.setEntity(se); 
         response = client.execute(post); 

         /*Checking response */ 
         if(response!=null){ 

          HttpEntity e = response.getEntity(); 
          String r =EntityUtils.toString(e); 
          result = r; 
          Log.v("checkR", r); 
         } 

        } catch(Exception e) { 
         e.printStackTrace(); 
         Log.v("check", "exception"); 
         Log.v("check", e.getMessage()); 
         //createDialog("Error", "Cannot Estabilish Connection"); 
        } 

       return result; 

      } catch (Exception e) { 
       // TODO Auto-generated catch block 

       e.printStackTrace(); 
      } 
      return result; 
     } 
    } 

あなたがデータを取得するとき、あなたはJSON形式から、それをデコードすることが必要になりますが、ここではサンプルクラスとDECODEJSON機能がある、してみてください自分の要件を考慮して実装すること。

package com.example.aimalkhan.vegegardenandroidapp; 

/** 
* Created by Aimal Khan on 12/28/2015. 
*/ 

import android.util.Log; 

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

import java.util.ArrayList; 
import java.util.List; 

public class Users { 

    private static String userName; 
    private static String password; 
    private static String contactNumber; 
    private static String emailId; 
    private static String lat; 
    public static String longg = ""; 
    private static String address; 

    public static String getPlantNames() { 
     return plantNames; 
    } 

    public static void setPlantNames(String plantNames) { 
     Users.plantNames = plantNames; 
    } 

    private static String plantNames; 

    public String getLongg() { 
     Log.v("checkR", longg + "in users class! - getting long"); 
     return longg; 
    } 

    public void setLongg(String longg) { 
     Log.v("checkR", longg + "in users class! - seting long"); 
     this.longg = longg; 
    } 

    public String getAddress() { 
     return address; 
    } 

    public void setAddress(String address) { 
     Users.address = address; 
    } 

    public String getLat() { 
     return lat; 
    } 

    public void setLat(String lat) { 
     this.lat = lat; 
    } 

    public String getEmailId() { 
     return emailId; 
    } 

    public void setEmailId(String emailId) { 
     this.emailId = emailId; 
    } 

    public String getContactNumber() { 
     return contactNumber; 
    } 

    public void setContactNumber(String contactNumber) { 
     this.contactNumber = contactNumber; 
    } 

    public String getPassword() { 
     return password; 
    } 

    public void setPassword(String password) { 
     this.password = password; 
    } 

    public String getUserName() { 
     Log.v("checkR", "in users class" + userName); 
     return userName; 
    } 

    public void setUserName(String userName) { 
     this.userName = userName; 

    } 

    /*var $id=""; 
     var $type=""; 
     var $firstName=""; 
     var $lastName=""; 
     var $contactNumber=""; 
     var $emailId=""; 
     var $address=""; 
     */ 

    /*  public Users(String id,String type) 
      { 
       this.id=id; 
       this.type=type; 
      }*/ 
    public Users() { 
    } 

    public void decodeJson(JSONObject json) { 
     try { 
      userName = json.getString("userName"); 
      setUserName(userName); 
      password = json.getString("userPassword"); 
      setPassword(password); 
      contactNumber = json.getString("contactInfo"); 
      setContactNumber(contactNumber); 
      emailId = json.getString("emailID"); 
      Log.v("checkR", emailId + "in users class!"); 
      setEmailId(emailId); 
      lat = json.getString("userLat"); 
      setLat(lat); 
      longg = json.getString("userLong"); 
      Log.v("checkR", longg + "in users class!"); 
      address = json.getString("userAddress"); 
      setAddress(address); 
      Log.v("checkR", address + "in users class!"); 
      setLongg(longg); 
     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

    } 
    public static List<String> plantsT; 
    public void decodeJsonUserPlants(String json) { 
     String[] arr; 
     plantsT = new ArrayList<String>(); 
     Log.v("check123",json.toString()+"   json"); 
     try { 
      JSONObject jsonObject = new JSONObject(json); 
      arr = jsonObject.getString("plantNames").split(","); 

      for (int i = 0; i < arr.length; i++) { 
       arr[i] = arr[i].replaceAll("\"", "").replaceAll("\\[", "").replaceAll("\\]", ""); 
       Log.v("check123",arr[i].toString()+"   loop"); 
       plantsT.add(arr[i]); 
//    plantsT.add(arr.toString()); 
      } 


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


    } 
} 
    // 

問題が解決しない場合は教えてください。