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URLConnection vs. HttpURLConnection

3 replies on 1 page. Most recent reply: Apr 20, 2002 6:24 PM by Charles Bell

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Hiran

Posts: 41
Nickname: jclu
Registered: Mar, 2002

URLConnection vs. HttpURLConnection

Posted: Apr 15, 2002 1:06 PM

If I want to create a mini-browser (that only allows you to view web pages, as well as fill out forms on pages), should I use URLConnection or HttpURLConnection? It looks like I can do most (if not all) of what I want to do with URLConnection. But I'm not so sure.
Hiran

nagu

Posts: 7
Nickname: nagu
Registered: Apr, 2002

Re: URLConnection vs. HttpURLConnection

Posted: Apr 20, 2002 1:36 AM

Though u use URLConnection.getCoonection(); the returned object internally is HttpURLConnection only.
i feel u can try with URLConnection.

Charles Bell

Posts: 519
Nickname: charles
Registered: Feb, 2002

Re: URLConnection vs. HttpURLConnection

Posted: Apr 20, 2002 6:21 PM


/*	SimpleWebPageReader.java
*	@author: Charles Bell	
*	@version January 15 2001
*/

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

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;


public class SimpleWebPageReader implements HyperlinkListener{

	JEditorPane editorpane;

	public static void main(String[] args){
		SimpleWebPageReader  webreader = new SimpleWebPageReader();
		if (args.length == 1){
			webreader.show(args[0]);
		}else{
			webreader.show("http://www.quantumhyperspace.com/");
		}
	}

	public void show(String urlstring){

		editorpane = new JEditorPane();
		editorpane.addHyperlinkListener(this);
		JFrame frame = new JFrame(urlstring);
		JScrollPane scrollpane = new JScrollPane(editorpane);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setContentPane(scrollpane);
		frame.setSize(Toolkit.getDefaultToolkit().getScreenSize());
		frame.show();

		try{
			editorpane.setPage(urlstring); 
			editorpane.setContentType("text/html");
			editorpane.setEditable(false);

		}catch(MalformedURLException murle){
			editorpane.setContentType("text/html");
			editorpane.setText("<html><body>MalformedURLException: " + murle.getMessage() + "<br>Malformed URL: Can not load url: " +  urlstring + "</body></html>");;
		}catch(IOException ioe){
			editorpane.setContentType("text/html");
			editorpane.setText("<html><body>IOException: " + ioe.getMessage() + "<br>Could not load url: " +  urlstring + "</body></html>");;
		}
	}

	public void hyperlinkUpdate(HyperlinkEvent hyperlinkevent){
		HyperlinkEvent.EventType eventtype = hyperlinkevent.getEventType();
		URL url = null;
		if (eventtype  == HyperlinkEvent.EventType.ACTIVATED){
			try{
				url = hyperlinkevent.getURL();
				editorpane.setPage(url);
			}catch(MalformedURLException murle){
				editorpane.setContentType("text/html");
				editorpane.setText("<html><body>MalformedURLException: " + murle.getMessage() + "<br>Malformed URL: Can not load url: " +  url.toExternalForm()  + "</body></html>");;
			}catch(IOException ioe){
				editorpane.setContentType("text/html");
				editorpane.setText("<html><body>IOException: " + ioe.getMessage() + "<br>Could not load url: " +  url.toExternalForm() + "</body></html>");;
			}

		}
	}
}

Charles Bell

Posts: 519
Nickname: charles
Registered: Feb, 2002

Re: URLConnection vs. HttpURLConnection

Posted: Apr 20, 2002 6:24 PM

Hello, I used that SimpleWebPageReader I just posted to navigate to the web site I am building using jsp's and used to it to fill out an email form and sent myself an email message.

It's simple and does the job.

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