在毕向东最新经典Java基础视频里遇到的一个小问题 - 黑马程序员技术交流社区

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
class MyIEByGUI
{
private Frame f ;
private TextField tf ;
private Button but ;
private TextArea ta;
private Dialog d ;
private Label lab;
private Button okBut;
MyIEByGUI()
{
init();
}
public void init()
{
f = new Frame("my Internet Explorer");
f.setBounds(300,100,600,500);
f.setLayout(new FlowLayout());
tf = new TextField(60);
but = new Button("转到");
ta = new TextArea(25,70);
d = new Dialog(f,"提示信息-self",true);
d.setBounds(400,200,240,150);
d.setLayout(new FlowLayout());
lab = new Label();
okBut = new Button("确定");
d.add(lab);
d.add(okBut);
f.add(tf);
f.add(but);
f.add(ta);
myEvent();
f.setVisible(true);
}
private void myEvent()
{
okBut.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
d.setVisible(false);
}
});
d.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
d.setVisible(false);
}
});
tf.addKeyListener(new KeyAdapter()
{
public void keyPressed(KeyEvent e)
{
try
{
if(e.getKeyCode() == KeyEvent.VK_ENTER)
{
showDir();
}
}
catch (Exception ex)
{
}
}
});
but.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
showDir();
}
catch (Exception ex)
{
}
}
});
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
private void showDir()throws Exception
{
ta.setText("");
String url = tf.getText();//http://192.168.88.1:8080/myWeb/Hello.html
int index1 = url.indexOf("//")+2;
int index2 = url.indexOf("/",index1);
String str = url.substring(index1,index2);
String [] arr = str.split(":");
String host = arr[0];
int port = Integer.parseInt(arr[1]);
String path = url.substring(index2);
//ta.setText(str+"..."+path);
Socket s = new Socket(host,port);
PrintWriter out = new PrintWriter(s.getOutputStream(),true);
out.println("GET /"+path+" HTTP/1.1");
out.println("Accept:*/*");
out.println("Accept-Language: zh-CN,zh;q=0.8");
out.println("Host:192.168.88.1:10003");
out.println("Connection:Closed");
out.println();//制造空格
out.println();//制造空格
BufferedReader bufr = new BufferedReader(new InputStreamReader(s.getInputStream()));
String line = null;
while((line = bufr.readLine())!=null)
{
System.out.println(line);
ta.append(line+"\r\n");
}
ta.append("OVER");//结束标志
s.close();
}
public static void main(String[] args)throws Exception
{
new MyIEByGUI();
}
}

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