Android JSON HttpClient to send data to PHP server with HttpResponse
Solution 1
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:
json_decode(stripslashes($_POST['vehicle']));
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?
Solution 2
StringEntity s = new StringEntity(c.toString());
s.setContentEncoding("UTF-8");
s.setContentType("application/json");
request.setEntity(s);
Solution 3
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"));
httppost.setEntity(se);
HttpResponse response = httpclient.execute(httppost);
String temp = EntityUtils.toString(response.getEntity());
Log.i("tag", temp);
} catch (ClientProtocolException e) {
} catch (IOException e) {
}
}
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Scoobler
Home coder, playing mainly with PHP/Javascript/MySQL but like to mess around with other things, at the moment Android / Java.
Updated on July 09, 2022Comments
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Scoobler almost 2 years
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 = "http://www.server.com/thisfile.php"; 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; request.setEntity(entity); 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 = "http://www.myserver.com/ServiceMatalan.php"; 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 = itKeys.next(); 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:
{\"date\":\"today\",\"engineer\":\"me\"}
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!
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Toran Billups almost 13 yearsThanks for taking the time to document your issue w/ the 403 response. Had the same thing for a week and your post finally has me moving in the right direction!
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Scoobler over 12 years@Toran Billups not a problem, I'm glad it has helped you!!
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WebDevDanno about 11 yearsYour variables post to your PHP script correctly. How would you pull each variable say "engineer" and "fuel" and insert them into a MySQL database for example. It looks like all you can do is just use the
$_POST['vehicle'];
variable. Would very much welcome a response to this.
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Scoobler over 13 yearsThanks Sergey, but I am using a POST method to send the data, not passing parameters for GET from the PHP script.
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WebDevDanno about 11 yearsCould you possibly share your PHP file that contains
json_decode
because I think how my server is decoding the json data (wrongly) may be related to yours. -
macio.Jun over 10 yearsjson_decode(stripslashes($_POST['vehicle']), true); will return php array, json_decode(stripslashes($_POST['vehicle'])); returns php stdclass obj, which is hard to use. +1 for correct answer, thx