解析从Android中

Question

URL JSON响应我有我解析一个JSON反应的问题，但它返回一个错误：

cannot be converted into JSONArray 

什么将成为了可能的解决方案？

我的JSON响应：

BIZRATE.Suggest.callback({ 
"results":{ 
    "status":200, 
    "keyword":"iphone", 
    "suggestions":[ 
     "<b>iphone<\/b>", 
     "<b>iphone<\/b> cover", 
     "<b>iphone<\/b> 4", 
     "<b>iphone<\/b> case", 
     "rhinestone <b>iphone<\/b> cases", 
     "bling <b>iphone<\/b> case", 
     "glitter <b>iphone<\/b> case", 
     "<b>iphone<\/b> 3g", 
     "purple <b>iphone<\/b> case", 
     "<b>iphone<\/b> 4 cases" 
     ] 
    } 
    }) 

我的代码：

package com.ex.test; 

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStreamReader; 
import java.net.MalformedURLException; 
import java.net.URL; 
import java.net.URLConnection; 
import java.util.ArrayList; 

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

import android.app.Activity; 
import android.os.Bundle; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

public class test extends Activity { 

    /** Called when the activity is first created. */ 
    @SuppressWarnings({ "rawtypes", "unchecked" }) 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     ListView lv = (ListView)findViewById(R.id.listView1); 

     lv.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, this.fetchTwitterPublicTimeline()));   
    } 

    public ArrayList<String> fetchTwitterPublicTimeline() 
    { 
     ArrayList<String> listItems = new ArrayList<String>(); 

     try { 
      URL twitter = new URL(
        "http://suggest.bizrate.com/app/search?countryCode=US&numResult=10&callback=BIZRATE.Suggest.callback&keyword=iphone&format=json"); 
      URLConnection tc = twitter.openConnection(); 
      BufferedReader in = new BufferedReader(new InputStreamReader(
        tc.getInputStream())); 

      String line; 
      while ((line = in.readLine()) != null) { 
       JSONArray ja = new JSONArray(line); 

       for (int i = 0; i < ja.length(); i++) { 
        JSONObject jo = (JSONObject) ja.get(i); 
        System.out.println("value----"+jo.getString("suggestions")); 
        listItems.add(jo.getString("suggestions")); 
       } 
      } 
     } catch (MalformedURLException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (JSONException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     return listItems; 
    } 
} 

我的错误：

05-03 10:22:44.955: WARN/System.err(427): org.json.JSONException: Value BIZRATE.Suggest.callback(of type java.lang.String cannot be converted to JSONArray 
05-03 10:22:44.965: WARN/System.err(427):  at org.json.JSON.typeMismatch(JSON.java:107) 
05-03 10:22:44.965: WARN/System.err(427):  at org.json.JSONArray.<init>(JSONArray.java:91) 
05-03 10:22:44.974: WARN/System.err(427):  at org.json.JSONArray.<init>(JSONArray.java:103) 
05-03 10:22:44.974: WARN/System.err(427):  at com.ex.test.test.fetchTwitterPublicTimeline(test.java:47) 
05-03 10:22:44.974: WARN/System.err(427):  at com.ex.test.test.onCreate(test.java:31) 
05-03 10:22:44.984: WARN/System.err(427):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 
05-03 10:22:44.984: WARN/System.err(427):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 
05-03 10:22:44.984: WARN/System.err(427):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 
05-03 10:22:44.984: WARN/System.err(427):  at android.app.ActivityThread.access$2300(ActivityThread.java:125) 
05-03 10:22:44.984: WARN/System.err(427):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 
05-03 10:22:44.994: WARN/System.err(427):  at android.os.Handler.dispatchMessage(Handler.java:99) 
05-03 10:22:44.994: WARN/System.err(427):  at android.os.Looper.loop(Looper.java:123) 
05-03 10:22:44.994: WARN/System.err(427):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
05-03 10:22:45.004: WARN/System.err(427):  at java.lang.reflect.Method.invokeNative(Native Method) 
05-03 10:22:45.004: WARN/System.err(427):  at java.lang.reflect.Method.invoke(Method.java:521) 
05-03 10:22:45.004: WARN/System.err(427):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
05-03 10:22:45.004: WARN/System.err(427):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
05-03 10:22:45.004: WARN/System.err(427):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

你提到的JSON响应如下：

> BIZRATE.Suggest.callback({"results":{"status":200,"keyword":"iphone","suggestions":["iphone<\/b>","iphone<\/b> 
> cover","iphone<\/b> 4","iphone<\/b> 
> case","rhinestone iphone<\/b> 
> cases","bling iphone<\/b> 
> case","glitter iphone<\/b> 
> case","iphone<\/b> 3g","purple 
> iphone<\/b> case","iphone<\/b> 4 
> cases"]}}) 

这是无效的JSON。你应该切断第一部分，直到（包括）第一个括号。您还需要删除结束括号。这应该让你一些有效的JSON。

还有一点需要注意的是斜杠是如何在html中转义的。根据您使用这些数据的方式，您可能不希望它被转义。

以下网站可以帮助您验证您的JSON： http://www.jsonlint.com/

Answer 2

我可以看到2个问题：

1. 您正在阅读每行的输出与in.readline。首先，请尝试将整个输出读入String对象，以确保您拥有有效的JSON。

2. 你的结果最初并不是一个JSON数组;这是一个JSON对象。我会在如下阅读：

Answer 3

Note: get the response in form of string not in JSON.then use this function. 

/* 
* convert the JSONP (JSON call back function) to JSON. 
* it will split the function name from the string. 
* calculate the length of function +1 (it will include the parenthesis "(" 
    with function name, now terminate the loop.   
* split the string starting from calculated length and string length -1 (to remove the ending parenthesis ")". 
*/ 
public static String jsonCallbackToJson(String stringValue){ 
    String jsonData=null; 
    String functionName=null; 
    StringTokenizer st = new StringTokenizer(stringValue, "()"); 
    while (st.hasMoreElements()){ 
     functionName = st.nextToken(); 

     break; 
     //Log.d("kam","==jsondata=="+jsonData); 
    } 
    jsonData= stringValue.substring(functionName.length()+1,stringValue.length()-1); 
    return jsonData; 
}