HTML Post

[zoukai957]

Hi I'm trying to make a program that will fill out a form (involving scroll downs) and click submit. For some reason I keep on getting an IO (file not found error). I think it might be because I'm writing the POST script wrong or I didn't add the click submit button to the script (If that is the issue, the submit button does not have a name field... How can I tell my script to click submit if it has no name field) Can someone please help me? Sorry if this is the wrong section to post this >.<

import java.net.*;
import java.io.*;

public class Code {

	public static void main(String[] args) throws IOException {
	
		//Creates the URL where you enter the class
		try {
			URL webreg = new URL("http://soc.ess.rutgers.edu/soc");
		} catch (MalformedURLException e) { //error if the above URL is not accessible
			// TODO Auto-generated catch block
			System.out.println("This program cannot access the class list website. Sucks to be you xP");
			return;
		}
		
		//Writes the class you want to submit
		String content ="p_subj_cd=" + URLEncoder.encode("750", "UTF-8") + "&" + "p_course_no=" + URLEncoder.encode("204", "UTF-8")
			+ "&" + "p_campus=" + URLEncoder.encode("NB", "UTF-8") + "&" + "p_yearterm=" + URLEncoder.encode("20111", "UTF-8");
		
		//Tells the program that we are writing to the code given to us from the URL, webreg
		HttpURLConnection webregConnection =null;
		DataOutputStream output = null; //temporary for now
		try {
			webregConnection = (HttpURLConnection) (new URL("http://soc.ess.rutgers.edu/soc").openConnection());
			//Specifies that we are gonna input something into this connection
			webregConnection.setDoInput(true);
			//Specifies that we are gonna use this connection for an output
			webregConnection.setDoOutput(true);
			
			
			/*possible error below for wrong content type
			 * 
			 * 
			sets the content type of the website */
			webregConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
			
			//States the PHP command Post
			webregConnection.setRequestMethod("POST");
			
			//gets the output after submitting the class
			output = new DataOutputStream(webregConnection.getOutputStream());
			output.writeBytes(content);
	        output.flush();
	        output.close();

		} catch (MalformedURLException e) { //error if internet connection is lost
			System.out.println("Sounds to me like you lost the internet while the program was running... TOO BAD T_T");
			return;
		} catch (IOException e) { //I/O error
			e.printStackTrace();
			System.out.println("Looks like Joe doesn't know how to program because you just ran into an I/O exception");
			return;
		}
		
		//System.out.println(webregConnection.getInputStream());
		//Prints the output
        BufferedReader bufferedReader = null;
        try
        {
            // Prepare a reader to read the response from the URLConnection
            // throws IOException
            bufferedReader = new BufferedReader(new InputStreamReader(webregConnection.getInputStream()));
            String responeLine;
 
            // Read untill there is nothing left in the stream
            // throws IOException
            while ((responeLine = bufferedReader.readLine()) != null)
            {
                System.out.println(responeLine);
            }
 
        }
        catch(IOException ioException)
        {
            System.out.println("Problems while reading the response");
            ioException.printStackTrace();
 
            // throw the exception so that the caller is aware that
            // there was some problems
            throw ioException;
 
        }
        finally
        {
            // Good practice: clean up the connections and streams
            // to free up any resources if possible
            if (bufferedReader != null)
            {
                try
                {
                    // throws IOException
                    bufferedReader.close();
                }
                catch(Throwable ignore)
                {
                    // Cannot do much with exceptions doing clean up
                    // Ignoring all exceptions
                }
            }
 
        }

		
	}

}

[kevinpeter]

Here's a simple form that includes labels, radio buttons, and push buttons (reset the form or submit it):

<FORM action="http://somesite.com/prog/adduser" method="post">
<P>
<LABEL for="firstname">First name: </LABEL>
<INPUT type="text" id="firstname"><BR>
<LABEL for="lastname">Last name: </LABEL>
<INPUT type="text" id="lastname"><BR>
<LABEL for="email">email: </LABEL>
<INPUT type="text" id="email"><BR>
<INPUT type="radio" name="sex" value="Male"> Male<BR>
<INPUT type="radio" name="sex" value="Female"> Female<BR>
<INPUT type="submit" value="Send"> <INPUT type="reset">
</P>
</FORM>