CODEWITHSUNDEEP
javaphpandroidjsonretrofit2
yousafkh
yousafkh

Reputation: 104

Why Retrofit2 works with @Field and not @Body for POST requests

I don't understand the difference, I have coded an example where my application sends username and password to the server using a POST request using retrofit2.

I first tried sending the request with @Body tag in the interface method:`

@POST("/testproject/login.php")
Call<TestResponse> sendUsernamePassword(@Body UserData userData);

But my login.php responded with no body tags(username,password) received.

Then I change the method to send request using FormEncoding:

@FormUrlEncoded
@POST("/testproject/login.php")
Call<TestResponse> sendUsernamePassword(@Field("username")String username, 
                                        @Field("password")String password);

And it started working, But I don't understand why retrofit couldn't send post request using @Body annotation.

Here is login.php file

<?php

   if (isset($_POST['username']) && isset($_POST['password'])) {

      $response['status']   = 'success';
      $response['username'] = $_POST['username'] . " received";
      $response['password'] = $_POST['password'] . "received";

      echo json_encode($response);
   } else {
      $response['status'] = 'failure';
      echo json_encode($response);
   }

?>

Can someone explain what's the difference and how can it be fixed?

Upvotes: 2

Views: 1516

Answers (1)

Fernando Tan
Fernando Tan

Reputation: 644

@Body – Sends Java objects as request body.

@Field – Send data as form-urlencoded. The @Field parameter works only with a POST.

In order to read POST json body in php, you can use the following code:

//Get the request body
$inputJSON = file_get_contents('php://input');
//Convert into array
$input = json_decode($inputJSON, TRUE);

$username = $input['username'];
$password = $input['password'];

Upvotes: 7

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