IllegalStateException: Content has been consumed

Question

I got struck because of IllegalStateException in the following code. Can anybody please help me? Code:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
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.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.telephony.gsm.GsmCellLocation;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Login extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        Button bt = (Button) findViewById(R.id.logbt);
        final EditText user = (EditText) findViewById(R.id.loguser);
        final EditText pw = (EditText) findViewById(R.id.logpw);
        bt.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (user.getText().toString() != "" && pw.getText().toString() != "") {
                    Thread t = new Thread() {
                        public void run() {
                            try {
                                HttpClient client = new DefaultHttpClient();
                                String postURL = "http://surfkid.redio.de/login";
                                HttpPost post = new HttpPost(postURL);
                                ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
                                params.add(new BasicNameValuePair("username", user.getText().toString()));
                                params.add(new BasicNameValuePair("password", md5(pw.getText().toString())));
                                UrlEncodedFormEntity ent = new UrlEncodedFormEntity(params, HTTP.UTF_8);
                                post.setEntity(ent);
                                HttpResponse responsePOST = client.execute(post);
                                HttpEntity resEntity = responsePOST.getEntity();
                                final JSONObject jObject = new JSONObject(EntityUtils.toString(resEntity));
                                Log.e("XXX", EntityUtils.toString(resEntity));
                            } catch (Exception e) {
                                Log.e("XXX", e.toString());
                            }
                        }
                    };
                    t.start();
                    // Log.e("XXX",s);
                }
            }
        });
    }

    private String md5(String in) {
        MessageDigest digest;
        try {
            digest = MessageDigest.getInstance("MD5");
            digest.reset();
            digest.update(in.getBytes());
            byte[] a = digest.digest();
            int len = a.length;
            StringBuilder sb = new StringBuilder(len << 1);
            for (int i = 0; i < len; i++) {
                sb.append(Character.forDigit((a[i] & 0xf0) >> 4, 16));
                sb.append(Character.forDigit(a[i] & 0x0f, 16));
            }
            return sb.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return null;
    }
}

Logcat message:

01-18 18:39:53.383: ERROR/XXX(7113): java.lang.IllegalStateException: Content has been consumed

Did you saw Logcat next to your console window, if you are not able to saw that, then click Windows Menu, then Click others and Chosse Logcat, and tell us whether you had problem in showing logcat or not,pls be quick — Sankar Ganesh PMP, Jan 18 '11 at 17:38
@rofl whats with Log.e("XXX",EntityUtils.toString(resEntity)); — user547995, Jan 18 '11 at 17:43
Ok Cool, So you had Got IllegalStateException, can you copy that Logcat error and paste in your question, or tell me, what is the line number logcat is showing you? — Sankar Ganesh PMP, Jan 18 '11 at 17:43
Click the E option in Your Logcat, Post the Message which are shown in Red Letters, Pls Edit this, because this Clumsy and Ugly too, difficult to read, we want to know where the error is occurred? — Sankar Ganesh PMP, Jan 18 '11 at 17:53
01-18 18:39:53.383: ERROR/XXX(7113): java.lang.IllegalStateException: Content has been consumed — user547995, Jan 18 '11 at 17:53
The callstack should also contain the file and line number where your problem occurs. — EboMike, Jan 18 '11 at 18:07

score 107 · Accepted Answer · answered Jan 19 '11 at 06:01

You can consume Content only at once from an Entity

in the line :

final JSONObject jObject = new JSONObject(EntityUtils.toString(resEntity));

you have consumed content and again you are using the same at here:

Log.e("XXX",EntityUtils.toString(resEntity));

That why it is causing IllegalStateException: Content has been consumed

So the solution is here:

String _response=EntityUtils.toString(resEntity); // content will be consume only once
final JSONObject jObject=new JSONObject(_response);
Log.e("XXX",_response);

Thank you so much.. This is really useful info.. Consuming of content after httptresponse can be done only once.. i was also doing the same mistake, but now got it perfectly. Thanks a lot. — Anil Chahal, Jul 23 '14 at 06:20

score 7 · Answer 2 · answered Mar 03 '14 at 06:25

7

it's also happens if you are writing the consuming statement in the Expressions of the debugger!!!
(e.g if you are doing "watch" to something like EntityUtils.toString(resEntity))

answered Mar 03 '14 at 06:25

dvrm

3,749
4
34
43

score 3 · Answer 3 · answered Jan 18 '11 at 18:00

3

First, this has to be a mistake that every single new android programmer makes and it's asked here every single day. You have

user.getText().toString()!= ""&& pw.getText().toString()!= ""

This doesn't do what you want it to. You need

 !user.getText().toString().equals("")&& !pw.getText().toString().equals("")

Also, you need to print the stacktrace. In your exception, you need

e.printStackTrace()

instead of logging

e.toString()

answered Jan 18 '11 at 18:00

Falmarri

47,727
41
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Btw, on this off-topic-topic, I prefer `Log.e(TAG, "Error", exception)` over `exception.toString()`. – EboMike Jan 18 '11 at 18:06
could anyone compile that class (user:test pw:sers) – user547995 Jan 18 '11 at 18:14

score 1 · Answer 4 · answered Aug 20 '12 at 18:53

1

I just dealt with a case of a null check on the entity causing it to be flagged as "consumed". Hope my headache will help someone else out there.

Vikas Patidar's answer helped me figure out the key to the riddle, so many thanks

answered Aug 20 '12 at 18:53

Joe Plante

6,308
2
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IllegalStateException: Content has been consumed

4 Answers4

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