Posts Tagged ‘NuSOAP’

Consume SOAP web service from Javascript

Wednesday, April 2nd, 2008

I wanted to get some data from a web service using Javascript. I looked at several Javascript classes (like this), but because the web service was running on another server it got a little troublesome. As a solution I tried to call the web service through a proxy, but that didn’t make it any easier.

Jaap suggested to take a look at NuSOAP, a -kinda old- SOAP toolkit for PHP. With an AJAX request I could call a PHP page that uses NuSOAP to consume the web service. It was actually easier then I thought it would be.

To make the AJAX call from Javascript I used Prototype and this script:

  function doRequest() {
    var url = "ajax/consume_webservice.php";
    var param1 = "value1";
    var param2 = "value2";
    var params = "param1="+ param1 +"&param2="+ param2;
 
    new Ajax.Request ( url, { method: 'POST', parameters: params,
      onComplete: onResult } );
  }
 
  function onResult( result ) {
    alert( result.responseText );
  }

The PHP file consume.php looks something like this:

< ?php
 
  $param1 = isset( $POST_['param1'] ) ? $POST_['param1'] : false;
  $param2 = isset( $POST_['param2'] ) ? $POST_['param2'] : false;
 
  // this is the only file I used from the NuSOAP project
  require_once( "nusoap.php" );
 
  $url = webserviceurl;
  $params = array( "param1" => $param1, "param2" => $param2 );
 
  $soap = new nusoap_client( $url, true, false, false, false, false, 0, 60 );
  $proxy = $soap->getProxy();
  $proxy->functionname( $params );
 
  echo $proxy->response;
 
?>

That’s all. Do a AJAX request from Javascript to a PHP page. Then the PHP page uses NuSOAP to consume the web service and returns the result. Back in Javascript you can do whatever you want with the given data.

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