Android JSON解析错误1999

两天来一直在解析JSON对象。我让所有东西都能在纯java上工作，但在将其应用到android上时遇到了问题

然后我选择使用提供的代码。具有讽刺意味的是，我试图解析的json也有一个id/email/name（和其他名称）（示例的json只有这三个）。但是，json对象不是如示例所示的“user”，而是“orders”

我正在使用GenyMoon并已发布logcat错误。如果有帮助的话，我很乐意发布代码

我真的很感激任何帮助

07-15 06:19:57.746: I/Choreographer(1999): Skipped 39 frames!  The application may be doing too much work on its main thread.
07-15 06:19:59.258: I/Choreographer(1999): Skipped 38 frames!  The application may be doing too much work on its main thread.
07-15 06:20:05.618: D/dalvikvm(1999): GC_FOR_ALLOC freed 381K, 10% free 4806K/5296K, paused 9ms, total 11ms
07-15 06:20:05.958: W/System.err(1999): org.json.JSONException: No value for orders
07-15 06:20:05.962: W/System.err(1999):     at org.json.JSONObject.get(JSONObject.java:355)
07-15 06:20:05.982: W/System.err(1999):     at org.json.JSONObject.getJSONArray(JSONObject.java:549)
07-15 06:20:05.982: W/System.err(1999):     at learn2crack.asynctask.MainActivity$JSONParse.onPostExecute(MainActivity.java:92)
07-15 06:20:05.994: W/System.err(1999):     at learn2crack.asynctask.MainActivity$JSONParse.onPostExecute(MainActivity.java:1)
07-15 06:20:05.998: W/System.err(1999):     at android.os.AsyncTask.finish(AsyncTask.java:632)
07-15 06:20:06.014: W/System.err(1999):     at android.os.AsyncTask.access$600(AsyncTask.java:177)
07-15 06:20:06.014: W/System.err(1999):     at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645)
07-15 06:20:06.014: W/System.err(1999):     at android.os.Handler.dispatchMessage(Handler.java:102)
07-15 06:20:06.014: W/System.err(1999):     at android.os.Looper.loop(Looper.java:136)
07-15 06:20:06.014: W/System.err(1999):     at android.app.ActivityThread.main(ActivityThread.java:5017)
07-15 06:20:06.014: W/System.err(1999):     at java.lang.reflect.Method.invokeNative(Native Method)
07-15 06:20:06.014: W/System.err(1999):     at java.lang.reflect.Method.invoke(Method.java:515)
07-15 06:20:06.014: W/System.err(1999):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
07-15 06:20:06.014: W/System.err(1999):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
07-15 06:20:06.014: W/System.err(1999):     at dalvik.system.NativeStart.main(Native Method)

现在主要的活动是

package learn2crack.asynctask;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import learn2crack.asynctask.library.JSONParser;



public class MainActivity extends Activity {
TextView uid;
TextView name1;
TextView email1;
Button Btngetdata;

//URL to get JSON Array
private static String url = "url"; //url contains private api key
//however, does contain json object, example object will be posted


//JSON Node Names 
////private static final String TAG_USER = "user";
private static final String TAG_ORDERS = "orders";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";

////JSONArray user = null;
JSONArray orders = null;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);
    Btngetdata = (Button)findViewById(R.id.getdata);
    Btngetdata.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
             new JSONParse().execute();


        }
    });


}



private class JSONParse extends AsyncTask<String, String, JSONObject> {
     private ProgressDialog pDialog;
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
         uid = (TextView)findViewById(R.id.uid);
         name1 = (TextView)findViewById(R.id.name);
         email1 = (TextView)findViewById(R.id.email);
        pDialog = new ProgressDialog(MainActivity.this);
        pDialog.setMessage("Getting Data ...");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(true);
        pDialog.show();

    }

    @Override
    protected JSONObject doInBackground(String... args) {
        JSONParser jParser = new JSONParser();

        // Getting JSON from URL
        JSONObject json = jParser.getJSONFromUrl(url);
        return json;
    }
     @Override
     protected void onPostExecute(JSONObject json) {
         pDialog.dismiss();
         try {
                // Getting JSON Array
                //user = json.getJSONArray(TAG_USER);
                orders = json.getJSONArray(TAG_ORDERS);
                ///JSONObject c = user.getJSONObject(0);
                JSONObject c = orders.getJSONObject(0);

                // Storing  JSON item in a Variable
                String id = c.getString(TAG_ID);
                String name = c.getString(TAG_NAME);
                String email = c.getString(TAG_EMAIL);


                //Set JSON Data in TextView
                uid.setText(id);
                name1.setText(name);
                email1.setText(email);


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


     }
}

}

最后一位是JSONParser.java

package learn2crack.listview.library;

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

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

public class JSONParser {

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser() {

}

public JSONObject getJSONFromUrl(String url) {

    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();           

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

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

    // return JSON String
    return jObj;

}
}

---

我希望这不仅仅是摆在我面前的事情，我已经为此努力了一段时间。如果需要的话，我也可以提供布局和清单，但我很确定它们都很好。

这是一个简单的JSON解析异常，对订单没有任何价值

---

您正在尝试获取键上不存在的命令的字符串（），请检查您的json值对组合。

发布json和解析代码。在json中，没有字段命令显示json和代码。这可能很简单，谢谢您的查看。我一直在努力，似乎哪儿也不去。我添加了额外的代码。

package learn2crack.listview.library;

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

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

public class JSONParser {

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser() {

}

public JSONObject getJSONFromUrl(String url) {

    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();           

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

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

    // return JSON String
    return jObj;

}
}