Help!!!.....HTTP Post to JSP with parameters in URL also....

Question

I am trying to emulate a webpage that is POSTing info to a URL which is a JSP that also has parameters in the URL. I am having problems getting my java code to emulate doing this task manually through a web browser.
The webpage has the following HTML code:
<form method=post action=hello.jsp?y=60245&x=698>
<input type="text" name="name" value="jim">
<input type=submit name=submit value="Now">
</form>
...notice that the jsp referenced above has some parameters appended to the url, but the method is post.
Here's my code to try to do the same thing as if I manually pressed the submit button in a browser:
URL url = new URL("hello.jsp?y=60245&x=698");
httpConnection = (HttpURLConnection)url.openConnection();
httpConnection.setRequestMethod("POST");
httpConnection.setDoOutput(true);
httpConnection.setDoInput(true);
httpConnection.setUseCaches(false);
httpConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
DataOutputStream output = new DataOutputStream(httpConnection.getOutputStream());
output.writeBytes("name=jim&submit=Now");
output.flush();
BufferedReader is = new BufferedReader(new InputStreamReader(httpConnection.getInputStream()));
Writer w = new BufferedWriter(new FileWriter("CapturedHTML.html"));
int data=0,count=0;
while(data!=-1){
      data = is.read();
      w.write(data);
      count++;
System.out.println(count + " bytes read");
w.flush();
w.close();
is.close();
output.close();I write out the result to a file so that I can see the HTML returned by the JSP. It's a completely different webpage than if I were to have manually clicked the submit button on a browser.
WHY???????? How is a browser actually sending the info to the jsp when it has info both in its URL and in the post data?

Answer 1

I might be wrong, but the browser could have some sort of mechanism built into it which makes sure that the parameters appended to the url are actually passed as a part of a POST requst, while a Java program might not pass them at all.
Have you tried passing these params: y=60245&x=698 as a part of a POST request, rather than adding them to the URL.
Also, how do u know which response from JSP is correct? They might be different but do u know which one is the correct one? Do you know what the response should look like? that would make things a lot easier as u could figure out what parameters are causing the differences in the responses u r getting.