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Hi
I am developing an android app that makes use of webservice for authentication, i am having challemges with the JSONParser
The error is in line 1, coloumn 1 but i dont know how to correct it kindly help

Stack trace

02-18 11:25:34.332    1198-1212/com.example.akinyemi.mysqltest1 E/JSON Parser﹕ Error parsing data org.json.JSONException: Value <!DOCTYPE of type java.lang.String cannot be converted to JSONObject
02-18 11:25:34.342    1198-1212/com.example.akinyemi.mysqltest1 W/dalvikvm﹕ threadid=11: thread exiting with uncaught exception (group=0xb3aecba8)
02-18 11:25:35.132    1198-1212/com.example.akinyemi.mysqltest1 E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1


JSONParser.java

package com.example.mysqltest;
	  
	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.InputStreamReader;
	import java.io.UnsupportedEncodingException;
	import java.util.List;
	 
	import org.apache.http.HttpEntity;
	import org.apache.http.HttpResponse;
	import org.apache.http.NameValuePair;
	import org.apache.http.client.ClientProtocolException;
	import org.apache.http.client.entity.UrlEncodedFormEntity;
	import org.apache.http.client.methods.HttpGet;
	import org.apache.http.client.methods.HttpPost;
	import org.apache.http.client.utils.URLEncodedUtils;
	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(final String url) {
	 
	        // Making HTTP request
	        try {
	            // Construct the client and the HTTP request.
	            DefaultHttpClient httpClient = new DefaultHttpClient();
	            HttpPost httpPost = new HttpPost(url);
	 
	            // Execute the POST request and store the response locally.
	            HttpResponse httpResponse = httpClient.execute(httpPost);
	            // Extract data from the response.
	            HttpEntity httpEntity = httpResponse.getEntity();
	            // Open an inputStream with the data content.
	            is = httpEntity.getContent();
	 
	        } catch (UnsupportedEncodingException e) {
	            e.printStackTrace();
	        } catch (ClientProtocolException e) {
	            e.printStackTrace();
	        } catch (IOException e) {
	            e.printStackTrace();
	        }
	 
	        try {
	            // Create a BufferedReader to parse through the inputStream.
	            BufferedReader reader = new BufferedReader(new InputStreamReader(
	                    is, "iso-8859-1"), 8);
	            // Declare a string builder to help with the parsing.
	            StringBuilder sb = new StringBuilder();
	            // Declare a string to store the JSON object data in string form.
	            String line = null;
	             
	            // Build the string until null.
	            while ((line = reader.readLine()) != null) {
	                sb.append(line + "\n");
	            }
	             
	            // Close the input stream.
	            is.close();
	            // Convert the string builder data to an actual string.
	            json = sb.toString();
	        } catch (Exception e) {
	            Log.e("Buffer Error", "Error converting result " + e.toString());
	        }
	 
	        // Try to 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 the JSON Object.
	        return jObj;
	 
	    }
	     
	  
	    // function get json from url
	    // by making HTTP POST or GET mehtod
	    public JSONObject makeHttpRequest(String url, String method,
	            List<NameValuePair> params) {
	  
	        // Making HTTP request
	        try {
	  
	            // check for request method
	            if(method == "POST"){
	                // request method is POST
	                // defaultHttpClient
	                DefaultHttpClient httpClient = new DefaultHttpClient();
	                HttpPost httpPost = new HttpPost(url);
	                httpPost.setEntity(new UrlEncodedFormEntity(params));
	  
	                HttpResponse httpResponse = httpClient.execute(httpPost);
	                HttpEntity httpEntity = httpResponse.getEntity();
	                is = httpEntity.getContent();
	  
	            }else if(method == "GET"){
	                // request method is GET
	                DefaultHttpClient httpClient = new DefaultHttpClient();
	                String paramString = URLEncodedUtils.format(params, "utf-8");
	                url += "?" + paramString;
	                HttpGet httpGet = new HttpGet(url);
	  
	                HttpResponse httpResponse = httpClient.execute(httpGet);
	                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;
	  
	    }
	}


I await your reply
Posted
Comments
Mohibur Rashid 18-Feb-15 20:59pm
   
You better print log of returned string. I think you are mixing up encoding.

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