Request a PHP script from Java and get the returned value?

Question

so what I want to do is say I have a PHP file that does a check from $_GET, so basically something like this;

<?php
$test = $_GET['test'];
if ($test == "test") {
   return true;
}
else {
  return false;
}
?>

And that will be saved on my server as test.php, I want to send a request to test.php from my Java file, get the return and do a test on the return.

So something like this

Request(http://example.com/test.php?test=test)
if (Request Returned True) {
   Do
}
else {
   Do...
}

Any idea on how to do that? I'm still new to Java so excuse this please..

In php, you need to output something, such as json. In Java, you need to parse the result — Steve, Jul 20 '16 at 10:46
@Steve How do I send the request to the PHP file from Java though? And how do I parse the result it returns? I'm fine with returning Json — user6613235, Jul 20 '16 at 10:50

Krzysztof Atłasik · Answer 1 · 2019-06-13T04:59:40.667

In php you need to echo some JSON:

<?php
$test = $_GET['test'];
if ($test == "test") {
   echo json_encode(['result'=>true]);
}
else {
    echo json_encode(['result'=>false]);
}

PS. Don't use ?> closing tag at the end of php file.

In java you could get Apache HttpClient, IOCommons (for IOUtils.toString) and Org.JSON (to parse JSON):

DefaultHttpClient httpClient = new DefaultHttpClient();
HttpGet getRequest = new HttpGet("http://example.com/test.php?test=test");

HttpResponse response = httpClient.execute(getRequest);


BufferedReader br = new BufferedReader(new InputStreamReader((response.getEntity().getContent())));

JSONObject json = new JSONObject(IOUtils.toString(br));

json.getString("result"); //result

I haven't checked it, but hopefully, it should work.

Request a PHP script from Java and get the returned value?

1 Answers1