在这里,我想使用API​​密钥显示 JSON内容.但我无法获得身份验证.

我在JsonObject中收到错误：

org.json.JSONException: Value Authorization of type java.lang.String cannot be converted to JSONObject

在我的Android应用程序中,我只是传递API密钥和URL id以获取以下URL中的JSON响应.我使用JSON数组显示JSON内容.

但如果我：

public class AndroidAPiActivity extends Activity {

/*
 * FlickrQuery = FlickrQuery_url
 * + FlickrQuery_per_page
 * + FlickrQuery_nojsoncallback
 * + FlickrQuery_format
 * + FlickrQuery_tag + q
 * + FlickrQuery_key + FlickrApiKey
 */

String FlickrQuery_url = "http://192.138.11.9/api/interests/";
String FlickrQuery_per_page = "&per_page=1";
String FlickrQuery_nojsoncallback = "&nojsoncallback=1";
String FlickrQuery_format = "&format=json";
String FlickrQuery_tag = "&tags=";
String FlickrQuery_key = "&api_key=";

// Apply your Flickr API:
// www.flickr.com/services/apps/create/apply/?
   String FlickrApiKey = "f65215602df8f8af";

   EditText searchText;
   Button searchButton;
   TextView textQueryResult,textJsonResult;
   ImageView imageFlickrPhoto;
   Bitmap bmFlickr;

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

       searchText = (EditText)findViewById(R.id.searchtext);
       searchButton = (Button)findViewById(R.id.searchbutton);
       textQueryResult = (TextView)findViewById(R.id.queryresult);
       textJsonResult = (TextView)findViewById(R.id.jsonresult);
       imageFlickrPhoto = (ImageView)findViewById(R.id.flickrPhoto);
       searchButton.setonClickListener(searchButtonOnClickListener);
   }

   private Button.OnClickListener searchButtonOnClickListener
   = new Button.OnClickListener(){

 public void onClick(View arg0) {
  // Todo Auto-generated method stub
  String searchQ = searchText.getText().toString();
  String searchResult = QueryFlickr(searchQ);
  textQueryResult.setText(searchResult);
  String jsonResult = ParseJSON(searchResult);
  textJsonResult.setText(jsonResult);

  if (bmFlickr != null){
   imageFlickrPhoto.setimageBitmap(bmFlickr);
  }
 }};

   private String QueryFlickr(String q){

    String qResult = null;

    String qString =
      FlickrQuery_url
      + FlickrQuery_per_page
      + FlickrQuery_nojsoncallback
      + FlickrQuery_format
      + FlickrQuery_tag + q 
      + FlickrQuery_key + FlickrApiKey;

    HttpClient httpClient = new DefaultHttpClient();
       HttpGet httpGet = new HttpGet(qString);

       try {
  httpentity httpentity = httpClient.execute(httpGet).getEntity();

  if (httpentity != null){
   InputStream inputStream = httpentity.getContent();
   Reader in = new InputStreamReader(inputStream);
   BufferedReader bufferedreader = new BufferedReader(in);
   StringBuilder stringBuilder = new StringBuilder();

   String stringReadLine = null;

   while ((stringReadLine = bufferedreader.readLine()) != null) {
    stringBuilder.append(stringReadLine + "\n");
    }

   qResult = stringBuilder.toString();

  }

 } catch (ClientProtocolException e) {
  // Todo Auto-generated catch block
  e.printstacktrace();
 } catch (IOException e) {  
  // Todo Auto-generated catch block
  e.printstacktrace();
 }

       return qResult;
   }

   private String ParseJSON(String json){

    String jResult = null;
    bmFlickr = null;
    String key_id;
    String category;
    String subcategory;
    String title;
    String icon_image;

    try
     {
  JSONObject JsonObject = new JSONObject(json);
  JSONObject Json_photos = JsonObject.getJSONObject("interests");
  JSONArray JsonArray_photo = Json_photos.getJSONArray("interest");

  //We have only one photo in this exercise
  JSONObject FlickrPhoto = JsonArray_photo.getJSONObject(0);

  key_id = FlickrPhoto.getString("row_key");
  category = FlickrPhoto.getString("category");
  subcategory = FlickrPhoto.getString("subcategory");
   title = FlickrPhoto.getString("title");

  jResult = "\n key_id: " + key_id + "\n"
    + "category: " + category + "\n"
    + "subcategory: " + subcategory + "\n"
    + "title: " + title + "\n";

  bmFlickr = LoadPhotoFromFlickr(key_id,category,subcategory,title);

 } catch (JSONException e) {
  // Todo Auto-generated catch block
  e.printstacktrace();
 }

    return jResult;
   }

   private Bitmap LoadPhotoFromFlickr(
     String key_id,String category,String subcategory,String title){
    Bitmap bm= null;

    String icon_image = null;
 //   String FlickrPhotoPath ="";
   String FlickrPhotoPath ="http://182.72.180.34/media/"+icon_image+".jpg";

    URL FlickrPhotoUrl = null;

    try {

  FlickrPhotoUrl = new URL(FlickrPhotoPath);

  HttpURLConnection httpconnection = (HttpURLConnection) FlickrPhotoUrl.openConnection();
  httpconnection.setDoInput(true);
  httpconnection.connect();
  InputStream inputStream = httpconnection.getInputStream();
  bm = BitmapFactory.decodeStream(inputStream);

 } catch (MalformedURLException e) {
  // Todo Auto-generated catch block
  e.printstacktrace();
 } catch (IOException e) {
  // Todo Auto-generated catch block
  e.printstacktrace();
 }

    return bm;
   }
}

更新：

基于HTML响应,我可以告诉你这不是JSON.该响应告诉我您的Web服务的URL不正确.

您需要检查您的网址.

额外信息/上一个答案：

看起来简单的答案是正确的 – 您的结果不是有效的JSON字符串.有关JSON应该是什么样的详细信息,请参见JSON.org网站.

查看JSON Parser Online – 我发现它在使用JSON时非常有用.

很奇怪你正在请求JSON,它没有正确地返回它 – 也许我错过了一些东西.

我正在编写一个打算在 Android设备上运行的应用程序.应用程序通过PHP读取MysqL数据库中的信息,但是当我运行应用程序时,Log cat会提示错误’错误解析数据org.json.JSONException：Value

我得到的代码是从教程中下载的,请耐心等待我已经掌握了一些基本的PHP知识和很少的java知识.我已经测试了PHP脚本,它运行完美,所以我不会费心去附上它.

main.java代码：

 package test.an2MysqL;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;

import org.apache.http.httpentity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;


public class main extends Activity {
/** Called when the activity is first created. */

   TextView txt;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    // Create a crude view - this should really be set via the layout resources 
    // but since its an example saves declaring them in the XML. 
    LinearLayout rootLayout = new LinearLayout(getApplicationContext()); 
    txt = new TextView(getApplicationContext()); 
    rootLayout.addView(txt); 
    setContentView(rootLayout); 

    // Set the text and call the connect function. 
    txt.setText("Connecting...");
  //call the method to run the data retreival
    txt.setText(getServerData(KEY_121));



}
public static final String KEY_121 = "http://10.1.1.19/cms/test/android2MysqL/read.PHP"; //i use my real ip here



private String getServerData(String returnString) {

   InputStream is = null;

   String result = "";
    //the data to send
    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    nameValuePairs.add(new BasicNameValuePair("country","undefined"));

    //http post
    try{
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost(KEY_121);
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            HttpResponse response = httpclient.execute(httppost);
            httpentity entity = response.getEntity();
            is = entity.getContent();

    }catch(Exception e){
            Log.e("log_tag","Error in http connection "+e.toString());
    }

    //convert response to string
    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();
            result=sb.toString();
    }catch(Exception e){
            Log.e("log_tag","Error converting result "+e.toString());
    }
    //parse json data
    try{
            JSONArray jArray = new JSONArray(result);
            for(int i=0;i<jArray.length();i++){
                    JSONObject json_data = jArray.getJSONObject(i);
                    Log.i("log_tag","id: "+json_data.getInt("id")+
                            ",country: "+json_data.getString("country")+
                            ",documentn: "+json_data.getInt("documentn")
                    );
                    //Get an output to the screen
                    returnString += "\n\t" + jArray.getJSONObject(i);
       }
    }catch(JSONException e){
            Log.e("log_tag","Error parsing data "+e.toString());
    }
    return returnString;
}   

}

我很感激你能给我的任何帮助.

正如您对问题的评论中所指出的那样,您的服务器似乎正在返回XML而不是JSON.您只需输出结果即可轻松确认：

}catch(JSONException e){
    Log.e("log_tag","Error parsing data "+e.toString());
    Log.e("log_tag","Failed data was:\n" + result);
}

如果它是XML,它几乎肯定是必须的,那么你需要让服务器输出JSON,或者你需要解析它发送给你的XML.