Android JSON HttpClient to send data to PHP server with HttpResponse

I am currently trying to send some data from and Android application to a php server (both are controlled by me).

There is alot of data collected on a form in the app, this is written to the database. This all works.

In my main code, firstly I create a JSONObject (I have cut it down here for this example):

JSONObject j = new JSONObject();
j.put("engineer", "me");
j.put("date", "today");
j.put("fuel", "full");
j.put("car", "mine");
j.put("distance", "miles");

Next I pass the object over for sending, and receive the response:

String url = "";
HttpResponse re = HTTPPoster.doPost(url, j);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
    Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();

The HTTPPoster class:

public static HttpResponse doPost(String url, JSONObject c) throws ClientProtocolException, IOException 
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost request = new HttpPost(url);
    HttpEntity entity;
    StringEntity s = new StringEntity(c.toString());
    s.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
    entity = s;
    HttpResponse response;
    response = httpclient.execute(request);
    return response;

This gets a response, but the server is returning a 403 - Forbidden response.

I have tried changing the doPost function a little (this is actually a little better, as I said I have alot to send, basically 3 of the same form with different data - so I create 3 JSONObjects, one for each form entry - the entries come from the DB instead of the static example I am using).

Firstly I changed the call over a bit:

String url = "";
Map<String, String> kvPairs = new HashMap<String, String>();
kvPairs.put("vehicle", j.toString());
// Normally I would pass two more JSONObjects.....
HttpResponse re = HTTPPoster.doPost(url, kvPairs);
String temp = EntityUtils.toString(re.getEntity());
if (temp.compareTo("SUCCESS")==0)
    Toast.makeText(this, "Sending complete!", Toast.LENGTH_LONG).show();

Ok so the changes to the doPost function:

public static HttpResponse doPost(String url, Map<String, String> kvPairs) throws ClientProtocolException, IOException 
    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(url);
    if (kvPairs != null && kvPairs.isEmpty() == false) 
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(kvPairs.size());
        String k, v;
        Iterator<String> itKeys = kvPairs.keySet().iterator();
        while (itKeys.hasNext()) 
            k =;
            v = kvPairs.get(k);
            nameValuePairs.add(new BasicNameValuePair(k, v));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    HttpResponse response;
    response = httpclient.execute(httppost);
    return response;

Ok So this returns a response 200

int statusCode = re.getStatusLine().getStatusCode();

However the data received on the server cannot be parsed to a JSON string. It is badly formatted I think (this is the first time I have used JSON):

If in the php file I do an echo on $_POST['vehicle'] I get the following:


Can anyone tell me where I am going wrong, or if there is a better way to achieve what I am trying to do? Hopefully the above makes sense!


After lots of reading and searching I have found the problem to be with, I beleive magic_quotes_gpc being enabled on the server.

Thus, using:


In my example above removes the slashes and allows the JSON to be decoded properly.

Still not sure why sending a StringEntity causes a 403 error?

StringEntity s = new StringEntity(c.toString());

Try this code it works for me

public void postData(String result,JSONObject obj) {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpParams myParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(myParams, 10000);
HttpConnectionParams.setSoTimeout(myParams, 10000);

String json=obj.toString();

try {

    HttpPost httppost = new HttpPost(result.toString());
    httppost.setHeader("Content-type", "application/json");

    StringEntity se = new StringEntity(obj.toString()); 
    se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));

    HttpResponse response = httpclient.execute(httppost);
    String temp = EntityUtils.toString(response.getEntity());
    Log.i("tag", temp);

} catch (ClientProtocolException e) {

} catch (IOException e) {



(String url = "";)


(String url = "";)

Question mark at the end is necessary when you're trying to send parameters to php script.

Try this code it works perfectly

*For HttpClient class* download jar file "httpclient-4.3.6.jar" and put in libs folder then
Compile:   dependencies {compile files('libs/httpclient-4.3.6.jar')}

repositories {
        maven {
            url ""

Need Your Help

Objective-C: Assertion vs. Exception vs. Error

objective-c cocoa conventions

In Cocoa, when should I use NSAssert, NSException, NSError?

htaccess doesn't work - always wrong password

.htaccess login password-protection .htpasswd

I am trying to password protect a directory, and have two files in the directory which should password protected it: