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DELETE http request in HttpURLConnection....

Vim Shir
Greenhorn

Joined: Jan 31, 2005
Posts: 9
Hi,

I have a client program in which i make a HTTPURLConnection to a RESTful web service. I am passing all XML data in the http request object. Everything seems to work fine for the HTTP POST/PUT method but not for the DELETE method.

-----------------ADD record via POST Request method ------------------

URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
//set request method
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/xml");
connection.setDoOutput(true);

//pass the xml data
PrintWriter writer = new PrintWriter(connection.getOutputStream());
writer.write(xmlData);
writer.flush();

When i execute the following code to delete a record, I am running into this exception...

Exception in thread "main" java.net.ProtocolException: HTTP method DELETE doesn't support output at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:851)

---------------Delete record via DELETE Request method ------------------

URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection)url.openConnection();
//set request method
connection.setRequestMethod("DELETE");
connection.setRequestProperty("Content-Type", "application/xml");
connection.setDoOutput(true);

//pass the xml data
PrintWriter writer = new PrintWriter(connection.getOutputStream);
writer.write(xmlData);
writer.flush();

I understand the exception it's throwing but how can i still pass the XML data in the request object for which i want to set the request method to be DELETE.

Any inputs or suggestions on this? Appreciate your response. Thanks!


Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42950
    
  71
What would that XML data be for? The resource is indicated by the URL, and the operation is to delete it. There's no need for further data.
Vim Shir
Greenhorn

Joined: Jan 31, 2005
Posts: 9
The xml data has details like which record (record's id, name, etc) to delete etc.,

This is what i am doing ....

In RESTful web service when i get the xml data in the http request object, i insert the data into a load table first & then call the stored proc to insert the data into the main table which updates the status flag in the load table as successful insert/update/delete/error etc., Then, i fetch the status flag info and send the response back to the client as record was inserted/updated/deleted.

Inserts and updates are working fine but not the delete part. Any further suggestions on this?

Thanks and appreciate your response.
Ulf Dittmer
Marshal

Joined: Mar 22, 2005
Posts: 42950
    
  71
That's not how HTTP DELETE -and by extension, a purely RESTful design- works. It sounds as if you'd be better off using a POST.
 
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