//本程序前提是必须要有Tomcat服务器，打开后才能运行

//否则自己做一个服务器

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import java.net.*;
class MyIEGui
{
private static Frame f;
private static Button but;
private static TextField tf;
private static Dialog dl;
private static Label lab;
private static Button okbut;
private static TextArea ta;
public static void main(String[] args)
{
    init();
}
private static void init()
{
  f=new Frame("my window");
  f.setBounds(300,200,500,400);
  f.setLayout(new FlowLayout());
  but=new Button("转到");
  tf=new TextField(53);
  ta=new TextArea(19,60);
  f.add(tf);
  f.add(but);
  f.add(ta);
  dl=new Dialog(f,"错误信息",true);
  dl.setBounds(350,250,240,120);
  dl.setLayout(new FlowLayout());
  lab=new Label();
  okbut=new Button("确定");
  dl.add(lab);
  dl.add(okbut);            
  event();  
  f.setVisible(true);
}
private static void event()
{
     tf.addKeyListener(new KeyAdapter(){
  public void keyPressed(KeyEvent e)
   {
    if(e.getKeyCode()==KeyEvent.VK_ENTER)
  {
     try
     {
    show();
     }
     catch (Exception ee)
     {
      throw new RuntimeException("路径错误");
     }
      
  }
  }
  });
  okbut.addKeyListener(new KeyAdapter(){
  public void keyPressed(KeyEvent e)
   {
    if(e.getKeyCode()==KeyEvent.VK_ENTER)
   {
     try
     {
    show();
     }
     catch (Exception es)
     {
      throw new RuntimeException("路径错误");
     }
      
   }
  }
  });
  f.addWindowListener(new WindowAdapter(){
  public void windowClosing(WindowEvent e)
   {
   System.exit(0);
   }
  });
  dl.addWindowListener(new WindowAdapter()
   {
   public void windowClosing(WindowEvent e)
    {
    dl.setVisible(false);
    }
   }   );
  okbut.addActionListener(new ActionListener(){
  public void actionPerformed(ActionEvent e)
   {
   dl.setVisible(false);  
  }
  });
  but.addActionListener(new ActionListener(){  
  public void actionPerformed(ActionEvent e){
     try
     {
    show();
     }
     catch (Exception ex)
     {
      throw new RuntimeException("路径错误");
     }
      
  }
  });

}
private static void show()throws Exception
{
  ta.setText("");
  String urlpath=tf.getText();//获取输入框信息http://127.0.0.1:8080/myweb/demo.html
  URL url=new URL(urlpath);
  URLConnection conn=url.openConnection();//它表示到 URL 所引用的远程对象的连接。
  InputStream ins=conn.getInputStream();//获取连接读取的输入流
  byte[] by=new byte[1024*1024*100];
  int len=ins.read(by);
  ta.append(new String(by,0,len));

  
}

}

很不错的！

发错了是“哥”才对

许个夸奖了，技术556了，是我几十倍，我向你学习才对。

值得学习ing!