웹에서 json 데이터를 가져올 수없는 이유

Question

제목과 마찬가지로 웹에서 많은 예제 코드를 시도했습니다. 하지만 성공할 수 없습니다. { "위치": { "이름

이

은 JSONParser.java

package com.example.user.bustime; 

import android.util.Log; 

import org.apache.http.HttpEntity; 
import org.apache.http.HttpResponse; 
import org.apache.http.StatusLine; 
import org.apache.http.client.ClientProtocolException; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 

/** 
* Created by USER on 2015/2/1. 
*/ 
public class JSONParser { 
    static InputStream iStream = null; 
    static JSONObject jsonOb = null; 
    static String json = ""; 

    public JSONParser(){} 

    public JSONObject getJSONFromUrl(String url){ 
     StringBuilder builder = new StringBuilder(); 
     HttpClient client = new DefaultHttpClient(); 
     HttpGet httpGet = new HttpGet(url); 
     try{ 
      HttpResponse response= client.execute(httpGet); 
      StatusLine statusLine = response.getStatusLine(); 
      int statusCode = statusLine.getStatusCode(); 
      if(statusCode == 200){ 
       HttpEntity entity = response.getEntity(); 
       InputStream content = entity.getContent(); 
       BufferedReader reader = new BufferedReader(new InputStreamReader(content)); 
       String line; 
       while((line = reader.readLine()) != null){ 
        builder.append(line); 
       } 
      }else{ 
       Log.e("==>", "Failed to download file"); 
      } 
     }catch(ClientProtocolException e){ 
      e.printStackTrace(); 
     }catch(IOException e){ 
      e.printStackTrace(); 
     } 

     try{ 
      jsonOb = new JSONObject(builder.toString()); 
     }catch(JSONException e){ 
      Log.e("JSON Parser","Error parsing data "+e.toString()); 
     } 
     return jsonOb; 
    } 


} 

그리고

{"EssentialInfo "처럼 내 JSON 파일 내 MaiActivity.java

package com.example.user.bustime; 

import android.os.AsyncTask; 
import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.widget.ArrayAdapter; 
import android.widget.Spinner; 

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

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.io.Reader; 
import java.net.URL; 
import java.nio.charset.Charset; 


public class MainActivity extends ActionBarActivity { 
    final String url = "http://imp.5284.com.tw/TaipeiBusService/EstimateTime.aspx?DataFormat=json" ; 
    private Spinner spinner ; 
    private String time[]; 
    private ArrayAdapter<String> adapterTime; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     spinner = (Spinner)findViewById(R.id.spinner); 
     new GenerateBusData().execute(); 
    } 


    public class GenerateBusData extends AsyncTask<Void,String,String>{ 

     @Override 
     protected String doInBackground(Void... params) { 

      JSONParser jParser = new JSONParser(); 
      try{ 
       JSONObject json = jParser.getJSONFromUrl(url); 
        JSONArray i = json.getJSONArray("BusInfo"); 
        time=new String[i.length()]; 
        System.out.println("i.length()=>"+i.length()); 
        for(int x=0;x<5;x++) { 

        Object jsonOb = i.get(x); 
        JSONObject t = new JSONObject(jsonOb.toString()); 
        Object jsonOb1 = t.get("EstimateTime").toString(); 

        time[x] = jsonOb1.toString(); 
       } 

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




//   try{ 
//    JSONObject j = readJsonFromUrl("http://imp.5284.com.tw/TaipeiBusService/EstimateTime.aspx?DataFormat=json"); 
//    JSONArray i = j.getJSONArray("BusInfo"); 
//    time=new String[i.length()]; 
//    System.out.println("i.length()=>"+i.length()); 
//    for(int x=0;x<10;x++){ 
// 
//     Object jsonOb = i.get(x); 
//     JSONObject t = new JSONObject(jsonOb.toString()); 
//     Object jsonOb1 = t.get("EstimateTime").toString(); 
// 
//     time[x] = jsonOb1.toString(); 

//    } 
//   }catch (Exception e){ 
//    e.printStackTrace(); 
//   } 


      return ""; 
     } 

     @Override 
     protected void onPostExecute(String s) { 
      super.onPostExecute(s); 
      String []tmp = {"a","b","c"}; 
      adapterTime=new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_spinner_dropdown_item,time); 
      adapterTime.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
      spinner.setAdapter(adapterTime); 
     } 
    } 








    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_main, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 

    private static String readAll(Reader rd) throws IOException { 
     StringBuilder sb = new StringBuilder(); 
     int cp; 
     while ((cp = rd.read()) != -1) { 
      sb.append((char) cp); 
     } 
     return sb.toString(); 
    } 

    public static JSONObject readJsonFromUrl(String url) throws IOException, JSONException { 
     InputStream is = new URL(url).openStream(); 
     try { 
      BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8"))); 
      String jsonText = readAll(rd); 
      JSONObject json = new JSONObject(jsonText); 
      return json; 
     } finally { 
      is.close(); 
     } 
    } 
} 

입니다 ","CentralName ":"CentralName ","UpdateTime ":"2015-02-01 10:07:14 ","CoordinateSystem ":"WGS84 "},"BusInfo ": [{ "StopID": 138730.0, "GoBack": "0", "RouteID": 16588.0, "EstimateTime": "- 1"}, { "StopID": 138731.0, "G "StopID": 138732.0, "GoBack": "0", "RouteID": 16588.0, "EstimateTime": "-"0 ","RouteID ": 16588.0,"EstimateTime " 1 "}, {"StopID ": 138733.0,"GoBack ":"0 ","RouteID ": 16588.0,"EstimateTime ":"-1 "}, {"StopID ": 138734.0,"GoBack " "RouteID": 16588.0, "EstimateTime": "-1"}, { "StopID": 138735.0, "GoBack": "0", "RouteID": 16588.0, "EstimateTime": "-1"}, { "StopID ": 138736.0,"GoBack ":"0 ","RouteID ": 16588.0,"EstimateTime ":"- 1 "}, {"StopID ": 138737.0,"GoBack ":"0 ","RouteID ": 16588.0, "StopID": 138738.0, "GoBack": "0", "RouteID": 16588.0, "EstimateTime": "0"}, { "StopID": 138739.0, "GoBack" "0", "RouteID": 16588.0, "EstimateTime": "120"}, { "StopID": 138740.0, "GoBack" "StopID": 138742.0, "GoBack": "0", "RouteID": 16588.0, "EstimateTime": "240"}, "StopID": 138741.0, "GoBack" "EstimateTime": "240"}, { "StopID": 138743.0, "GoBack": "0", "RouteID": 16588.0, "EstimateTime": "0"}]}

Answer 1

json 데이터 &을 Dropbox와 같은 다른 공공 서비스에 저장 한 다음 파일에 액세스하여 코드가 작동하는지 확인해야합니다.

작동하는 경우 데이터가 아닌 서비스 공급자 (http://imp.5284.com.tw/TaipeiBusService/EstimateTime.aspx)에 문제가있는 것 같습니다.

마지막으로, 여기에 오류 메시지를 게시해야합니다. 그렇지 않으면 아무도 당신을 도울 방법을 알 수 없습니다.

감사합니다.