I would like to upload files from java application/applet using POST http event. I would like to avoid to use any library not included in SE, unless there is no other (feasible) option.
So far I come up only with very simple solution.
- Create String (Buffer) and fill it with compatible header (http://www.ietf.org/rfc/rfc1867.txt)
- Open connection to server URL.openConnection() and write content of this file to OutputStream.
I also need to manually convert binary file into POST event.
I hope there is some better, simpler way to do this?
views:
6302answers:
3
+2
A:
You need to learn about the chunked encoding used in newer versions of HTTP. The Apache HttpClient library is a good reference implementation to learn from.
Josh
2008-11-24 16:11:40
+4
A:
You need to use the java.net.URL
and java.net.URLConnection
classes.
There are some good examples at http://java.sun.com/docs/books/tutorial/networking/urls/readingWriting.html
Here's some quick and nasty code:
public void post(String url) throws Exception {
URL u = new URL(url);
URLConnection c = u.openConnection();
c.setDoOutput(true);
if (c instanceof HttpURLConnection) {
((HttpURLConnection)c).setRequestMethod("POST");
}
OutputStreamWriter out = new OutputStreamWriter(
c.getOutputStream());
// output your data here
out.close();
BufferedReader in = new BufferedReader(
new InputStreamReader(
c.getInputStream()));
String s = null;
while ((s = in.readLine()) != null) {
System.out.println(s);
}
in.close();
}
Note that you may still need to urlencode() your POST data before writing it to the connection.
Alnitak
2008-11-27 15:34:40
A:
I Don't have an answer to this question but I want to thank Alnitak for their answer it helped me complete a crucial portion of a project I am working on.
JoshOiknine
2009-10-15 03:19:56