API

Java servlet and API response

1. • CommentAuthorpennywise
   • CommentTimeJul 23rd 2010 edited @ 07/23/2010 7:13 am

    
   Hi all, I'm trying to make a simple jquery script that send data to a java servlet, that will send request to myintervals, retrieve the response and send this one to the jquery script. So, the problem is the myinterval's response:
   
   <?xml version="1.0" encoding="UTF-8"?>
   
   <intervals personid="59348" status="Bad Request" code="400"><error><code>17</code><message>Parameter not recognized</message><verbose><item>Unable to parse PUT/POST input. Please check your XML/JSON for validity and well-formedness.</item></verbose></error></intervals>
   
   The request is done by servlet, in this way:
   
   protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
   {
   HttpURLConnection my = null;
   URL myint = new URL( -- query url --);
   
   
   my = (HttpURLConnection)myint.openConnection();
   my.setRequestMethod("POST");
   my.addRequestProperty("Host", "api.myintervals.com");
   my.addRequestProperty("Accept", "application/xml");
   my.addRequestProperty("Content-type", "application/json");
   my.addRequestProperty("Authorization", "Basic M2k1NnhzY3EzOG86WA==");
   InputStream is = my.getInputStream();
   BufferedReader in = new BufferedReader(new InputStreamReader(is));
   String inputLine;
   while ((inputLine = in.readLine()) != null) {
   resp.getWriter().println(inputLine);
   }
   //resp.getWriter().println(myint);
   in.close();
   
   }
   
   With this i'm trying, with POST, to insert a new time object...what's wrong? I don't understand the error message!
   If I try to retrieve information with GET, with the same java class, it works!
   I hope you can help me, thx!
   
   ps: sorry for my english..
   ppss: maybe this forum got problem with rich text? I can't set [CODE] or similar tag in this post...
2. •  
     CommentAuthorcameron
   • CommentTimeJul 23rd 2010

    
   Hey pennywise,
   
   My Java knowledge is not very fresh so please bear with me. It looks like you're not sending any data to the server to create a new time object. In your code you've set Content-type to application/json, so you need to be sending JSON formatted data to the server. The following URL shows how to format your data (the example is in XML) when making a request:
   
   http://www.myintervals.com/api/resource.php?r=time
   
   The following URL contains an example of how to format your request to make a POST request using JSON data:
   
   http://www.myintervals.com/api/examples.php
   
   I've done a little bit of research on doing this in Java and this page looks like a good place to start:
   
   http://developers.sun.com/mobility/midp/ttips/HTTPPost/
   
   Particularly, it looks like you need to be using an OutputStream to pass POST data to the server. After "my.addRequestProperty("Authorization", "Basic M2k1NnhzY3EzOG86WA==");" I would add something like the following:
   
   OutputStream os = my.openOutputStream();
   os.write( -- JSON encoded data -- );
   
   Also, if you if you are using an important account (as opposed to a sandbox account), be sure to change your API token now that the base64 encoded version has been posted to this public forum.
   
   Hope this information helps.
   
   Cameron Brooks
   Pelago
3. • CommentAuthorpennywise
   • CommentTimeJul 26th 2010

    
   Thank you, now it works!
   
   In detail, if someone else need, the code is
   
   (...)
   my.setDoOutput(true); //this to allow URL Connection to send output
   OutputStreamWriter osw = new OutputStreamWriter(my.getOutputStream());
   osw.write( /* JSON Content */);
   (...)
   
   For the token, no problem about it, I'm using a free account for testing purpose, but thanks for your advice.
   
   Thank you again, regards!