Source not found error after HttpClient.execute()

Question

I am new to android development. I have the following class for downloading some data in JSON format. I keep getting a Source not found error on the HttpResponse httpResponse = httpClient.execute(httpPost); line... I'm sure this must be a simple fix... Here is the class code...

 package com.example.tankandroid;

 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;

}

}

This Source not found error is really misleading, can you make sure that's what is being caught as the exception? — Sotirios Delimanolis, May 09 '13 at 21:28
The URL looks fine and it returns nicely formatted JSON. Could you please have a look at my answer and provide some more information regarding when and where your get the "Source not found" message — britzl, May 09 '13 at 21:32

score 0 · Answer 1 · answered Aug 06 '15 at 11:13

0

Put this code in onCreate method

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
            .permitAll().build();
    StrictMode.setThreadPolicy(policy);

answered Aug 06 '15 at 11:13

Muhammad Fuzail Zubari

303
3
13

score 0 · Answer 2 · edited Sep 21 '15 at 12:20

0

Use Apache HttpCore and HttpClient libraries. Put these two libraries into your lib folder, its automatically add these into your build path.

edited Sep 21 '15 at 12:20

Guy

1,434
1
19
33

answered Sep 21 '15 at 11:24

Sahil Arora

495
1
3
11

score 0 · Answer 3 · answered Oct 11 '15 at 12:57

0

One reason for this situation may be missing internet permissions in AndroidManifest.xml file. Adding this line in manifest will fix the issue.

<uses-permission android:name="android.permission.INTERNET" />

answered Oct 11 '15 at 12:57

Sudheer Kumar Palchuri

2,919
1
28
38

score -1 · Answer 4 · edited May 23 '17 at 11:52

You need to provide some more information I think. Where do you get the "Source not found" error? Is it an Eclipse error that prevents you from compiling. Is it during compilation? Is it a runtime error? Could this be a possible duplicate of: Source not found Android? ?

Question: Why are you doing an HTTP POST if you don't intend to add any POST data? A GET seems more appropriate.

And since you also ask "I'm sure this must be a simple fix" then yes, it is. I'd really suggest that you rip out your HTTP code and switch to Android Asynchronous Http Client. It's super easy to work with and very well suited for getting an HTTP response and parsing it. Example:

AsyncHttpClient client = new AsyncHttpClient();
RequestParams rp = new RequestParams();
rp.put("some_param", "some value");
rp.put("another_param", "some other value");
client.post("http://www.simonsayssolutions.co.uk/index.php", rp, new AsyncHttpResponseHandler() {
    @Override
    public final void onSuccess(String response) {
        // handle your response and parse JSON here
    }

    @Override
    public void onFailure(Throwable e, String response) {
        // something went wrong
    }               
});

or GET:

client.get("http://www.simonsayssolutions.co.uk/index.php", rp, new AsyncHttpResponseHandler() {
...
}

And finally if you want to simplify JSON parsing have a look at Jackson or Gson. Especially if you want to parse JSON data to Java objects and vice versa.

Source not found error after HttpClient.execute()

4 Answers4