urlconnectionreader.java.bak

nanjing university cs 的java课件。 对新手很有用。付课件中源码。

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

public class URLConnectionReader extends Frame {
	TextArea contents = new TextArea("HTML content");
	Button readButton = new Button("read");
	URL fileURL;
	String text = "";
	
	public URLConnectionReader(){
		this.add(contents);
		this.add(readButton, BorderLayout.SOUTH);
		this.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e){
				System.exit(0);
			}
		});
		readButton.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {
				read();
			}
		});
		this.setSize(400,300);
		this.setVisible(true);
	}
	
	void read(){
		try{
			fileURL = new URL("http://localhost:8080/test.html");
			URLConnection tc = fileURL.openConnection();
      		BufferedReader in = new BufferedReader(
                  new InputStreamReader(tc.getInputStream()));
	        contents.setText("The file contents are:\n");
	        while ((text=in.readLine())!=null)
	        	contents.appendText(text+"\n");
	        in.close();   
		}
		catch(Exception e){
		}
	}
	
	public static void main(String[] args) throws Exception {
		     new URLConnectionReader();
	}
}