title: Unexpected Error when using JSon URL input in spoon
body: <p>I am trying to import a json in spoon. It works just fine with a file .json but when I try it from a URL I get the Unexpected Error, followed by the java null pointer exception, when executing the transformation.</p>
  
  <p>I get the same error with "JSON input", and with "Get content" followed by "extract from stream" which seems to be very alike.</p>
  
  <p>For the simple test I used for URL :
  <a href="http://echo.jsontest.com/name/James/age/25" rel="nofollow">http://echo.jsontest.com/name/James/age/25</a></p>
  
  <p>I tried with the "Json INPUT", selected the checkbox field as an URL, tried with the URL above (with and without the http://). And in the fields parametre I used the same ones that worked well with a file input (instead of URL).
  So the JSONPATH are $.name and $.age</p>
  
  <p>I also tried starting from the sample data "Json input - read incoming stream" and switching it to URL like it was described in this post :
  <a href="http://forums.pentaho.com/showthread.php?135741-Issues-with-JSON-Input-step" rel="nofollow">http://forums.pentaho.com/showthread.php?135741-Issues-with-JSON-Input-step</a></p>
  
  <p>I am working on a distant server running on debian (jessie version).
  I use pentaho 6.1</p>
  
  <p>I feel like I've tried everything but I might be missing something obvious.</p>
  
  <p>I apologize for my poor level of english. If more information is needed just ask. Thank you.</p>