java 读取网页源码；

输入标准为 http://www.xxx.com

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.DataInputStream;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

import org.omg.CORBA.TCKind;


public class web extends JFrame implements ActionListener{

	/**
	 * @param args
	 */
	JTextField t1=new JTextField(30);
	JTextArea t2=new JTextArea();
	JButton b1=new JButton("open");
	JPanel p=new JPanel();
	public web(){
		p.add(t1);
		p.add(b1);
		JScrollPane jp=new JScrollPane(t2);
		b1.addActionListener(this);
		getContentPane().add(p,"North");
		getContentPane().add(jp,"Center");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setSize(500, 400);
		setVisible(true);
		setTitle("read url");
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		web webH=new web();
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		readURL(t1.getText());
	}
	private void readURL(String URLName) {
		// TODO Auto-generated method stub
		try {
			URL url=new URL(URLName);
			URLConnection  tc=url.openConnection();
			tc.connect();
			DataInputStream dis=new DataInputStream(tc.getInputStream());
			String inputLineString;
			while ((inputLineString=dis.readLine())!=null) {
				t2.append(inputLineString+"\n");
			}
		} catch (MalformedURLException e) {
			// TODO: handle exception
			e.printStackTrace();
		}catch (IOException e1) {
			e1.printStackTrace();
			// TODO: handle exception
		}
	}

}