没有得到Json的回应

Question

我编写了一个php文件，它接受一个数组，将其展开并执行查询。

问题：

我传递的数组是：127 129 121

在logcat JSON响应的android端只包含第一个数组项的查询结果。

{
    "users": [
        {
            "lat": "0",
            "lng": "0",
            "uid": "127"
        },
        {
            "lat": "-33.866",
            "lng": "151.195",
            "uid": "127"
        }
    ],
    "success": 1,
    "message": "lat lng"
}

但我传递相同的数组并在浏览器中测试文件（使用postman）我得到以下json响应：

{
    "users": [
        {
            "lat": "0",
            "lng": "0",
            "uid": "127"
        },
        {
            "lat": "-33.866",
            "lng": "151.195",
            "uid": "127"
        }
    ],
    "success": 1,
    "message": "lat lng"
}

{
    "users": [
        {
            "lat": "-18.142",
            "lng": "178.431",
            "uid": "129"
        }
    ],
    "success": 1,
    "message": "lat lng"
}

{
    "users": [
        {
            "lat": "37.423",
            "lng": "-122.091",
            "uid": "121"
        },
        {
            "lat": "-31.9906066",
            "lng": "148.8977051",
            "uid": "121"
        }
    ],
    "success": 1,
    "message": "lat lng"
}

我希望所有用户的记录都是这个json响应。为什么我在php和android端获得不同的响应？我想要我在数组中传递的所有用户的记录。救命！！ PHP代码：

 <?php
 // array for JSON response
$response = array();
// include db connect class
require_once __DIR__ . '/db_connect.php';

// connecting to db
$db = new DB_CONNECT();

// check for post data
if (isset($_GET["uid"])  ) {

    $uid= explode(' ', $_GET['uid']);

foreach ($uid as $value) {

    $result=mysql_query("SELECT lat,lng,uid FROM location1 WHERE uid='$value' AND date='27-11-2014' ");

if(mysql_num_rows($result) > 0)
    {
        $response["users"] = array();
             while($row = mysql_fetch_array($result))
             {
                $users = array();

                 $users["lat"] = $row["lat"];
                $users["lng"] = $row["lng"];
                $users["uid"] = $row["uid"];
                // user node
                array_push($response["users"], $users);

             }
        $response["success"] = 1;
     $response["message"] = "lat lng";
    // echoing JSON response
        echo json_encode($response)."<br>";
    }
    else {
        // no product found
        $response["success"] = 0;
        $response["message"] = "No product found";

        // echo no users JSON
        echo json_encode($response)."<br>";
    }
    }
}
?>

HERE是android代码：

   package com.example.newtabs;

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

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.example.utils.Constants;
import com.example.utils.Utils;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.PolylineOptions;

public class Circle_SubTabFriends_Map extends Activity {
    String user_email,user_id;
    Button add;
    String end_lat;
    String end_lng;
    String[] lv_items;
    int len;
    String s;
    String detail;
    StringBuilder sb;
    JSONParser jsonParser = new JSONParser();
    // Creating JSON Parser object
            JSONParser jParser = new JSONParser();
    static String url_circle_friends = Constants.url_circle_friends;
    static String url_location_friend_circle = Constants.url_location_friend_circle;
    private static final String TAG_SUCCESS = "success";
    private static final String TAG_USERS = "users";
    private static final String TAG_LAT = "lat";
    private static final String TAG_LNG = "lng";
    private static final String TAG_UID = "uid";
    private static final String TAG_NAME = "name";
    // users JSONArray
    JSONArray users = null;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       // new GetCurrentLocation().execute();
        new LoadAllUsers().execute();
        new GetCurrentLocation().execute();
      //function for maintaining session
            user_id=Utils.GetPreferences("user_id",this);
            user_email=Utils.GetPreferences("user",this);
            if(user_email.length() <0)
            {
                Intent i = new Intent(getApplicationContext(), Locator_Registration.class);
                startActivity(i);
            }

        setContentView(R.layout.locator_map);

        add = (Button) findViewById(R.id.add);
        add.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View view) {
                // Launching All products Activity
                Intent i = new Intent(getApplicationContext(), Circle_SubTabFriends_AddCircle.class);
                startActivity(i);
            }
        });
    }
    /**
     * Background Async Task to Load all users by making HTTP Request
     * */
    class LoadAllUsers extends AsyncTask<String, String, String> {

        /**
         * Before starting background thread Show Progress Dialog
         * */
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
}

        /**
         * getting All products from url
         * */
        protected String doInBackground(String... args) {

            // Building Parameters
            List<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("email", user_email));
            // getting JSON string from URL

            JSONObject json = jParser.makeHttpRequest(url_circle_friends, "GET", params);

            // Check your log cat for JSON reponse
            Log.d("circle_subtabfrinds ", json.toString());

            try {
                // Checking for SUCCESS TAG
                int success = json.getInt(TAG_SUCCESS);

                if (success == 1) {
                    // users found
                    // Getting Array of users
                    users = json.getJSONArray(TAG_USERS);
                    lv_items = new String[users.length()];
                    len = lv_items.length;
                    // looping through All Users
                    for (int i = 0; i < users.length(); i++) {
                        JSONObject c = users.getJSONObject(i);

                        // Storing each json item in variable
                        String id = c.getString(TAG_UID);
                        String name = c.getString(TAG_NAME);
                        lv_items[i] = id+","+name;
                        Log.d("CHECKING! ", id+name);

                    }

                } else {
                    // no products found

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

            return null;
        }

        /**
         * After completing background task Dismiss the progress dialog
         * **/
        protected void onPostExecute(String file_url) {
            // dismiss the dialog after getting all users
            //pDialog.dismiss();    
        }

    }
    /**       
     * Background Async Task to Get History
     * */
    class GetCurrentLocation extends AsyncTask<String, String, String> {

        /**
         * Before starting background thread Show Progress Dialog
         * */
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }

        /**
         * Getting user's history in background thread
         * */
        protected String doInBackground(String... params) {

            // updating UI from Background Thread
            runOnUiThread(new Runnable() {
                public void run() {
                    // Check for success tag
                    int success; 
                    try {
                        // Building Parameters
                        List<NameValuePair> params = new ArrayList<NameValuePair>();
                        sb = new StringBuilder();
                        String[] outputStrArr = new String[len];

                        for (int i = 0; i < len; i++) {
                            outputStrArr[i] = lv_items[i];

                            String[] separated = outputStrArr[i].split(",");
                            s = "";
                            String idpart = separated[0];
                            String namepart = separated[1];

                            detail = idpart + " " ;
                            Toast.makeText(getApplicationContext(), detail, Toast.LENGTH_LONG)
                                    .show();
                            sb.append(detail);
                        }

                        Toast.makeText(getApplicationContext(), /*selectedItems[i]*/ sb,
                                Toast.LENGTH_LONG).show();
                        String a=sb.toString();
                        a=a.trim();

                        Log.d("A!", a);

                        params.add(new BasicNameValuePair("uid", a));
                        // getting history by making HTTP request
                        // Note that user history url will use GET request
                        JSONObject json = jsonParser.makeHttpRequest(
                                url_location_friend_circle, "GET", params);
                        // check your log for json response
                        Log.d("circle location", json.toString());

                        // json success tag
                        success = json.getInt(TAG_SUCCESS);
                        if (success == 1) {
                            Log.d("RUNNN", "SUCCESS");
                            // successfully received history
                            users = json.getJSONArray(TAG_USERS); // JSON Array
                            Log.d("array users", users.toString());

                            lv_items = new String[users.length()];
                            len = lv_items.length;

                            // get first object from JSON Array
                            for (int i = 0; i < users.length(); i++) {
                                JSONObject c = users.getJSONObject(i);

                                String lat = c.getString(TAG_LAT);
                                String lng = c.getString(TAG_LNG);
                                lv_items[i] = lat + ',' + lng;
                                Log.d("FOOL!", lv_items[i].toString());

                            }
                        } else {
                            // history not found
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            });

            return null;
        }

        /**
         * After completing background task Dismiss the progress dialog
         * **/
        protected void onPostExecute(String file_url) {
            // dismiss the dialog once got all details
            GoogleMap map = ((MapFragment) getFragmentManager()
                    .findFragmentById(R.id.map)).getMap();

            map.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(
                    -18.142, 178.431), 2));
            sb = new StringBuilder();

            String[] outputStrArr = new String[len];
            for (int i = 0; i < len; i++) {
                outputStrArr[i] = lv_items[i];
                String[] separated = outputStrArr[i].split(",");
                s = "";

                    //end_lat = separated[0];
                    //end_lng = separated[1];
                    //Toast.makeText(getApplicationContext(), "end"+end_lat+"-"+end_lng,Toast.LENGTH_LONG).show();

                String latpart = separated[0];
                //Toast.makeText(getApplicationContext(), latpart,Toast.LENGTH_LONG).show();

                String lngpart = separated[1];
                map.addMarker(new MarkerOptions().position(new LatLng(Double
                        .valueOf( latpart).doubleValue(), Double
                        .valueOf(lngpart).doubleValue())));

            }
        }

    }
}