Go语言视频零基础入门到精通

一度

[color=#0033ff,strength=3);]package com;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
[color=#0033ff,strength=3);]public class MainForm extends JFrame {
[color=#0033ff,strength=3);] private JButton start = new JButton("开始");
[color=#0033ff,strength=3);] private JTextField tx = new JTextField(20);
[color=#0033ff,strength=3);] private JTextArea ts = new JTextArea(30, 70);
[color=#0033ff,strength=3);] JPanel top = new JPanel(), bot = new JPanel(),main=new JPanel();
Container con = null;
public MainForm(String title) {
  super(title);
  con = getContentPane();
  top.setLayout(new FlowLayout());
  top.add(new JLabel("请输入网址"));
  top.add(tx);
  top.add(start);
        ts.setLineWrap(true);
        ts.setForeground(Color.black);
        ts.setAutoscrolls(true);
      
  bot.add(new JScrollPane(ts));
        
  main.add(top, BorderLayout.NORTH);
  main.add(bot, BorderLayout.CENTER);
  
  con.add(main);
  setSize(800, 700);
  //pack();
  setVisible(true);
  
  start.addActionListener(new ActionListener(){
   public void actionPerformed(ActionEvent event)
   {
    if(tx.getText()==""||tx.getText().length()<=0)
    {
     JOptionPane.showMessageDialog(null, "请输入网址");
     return ;
    }
    ts.setText("");
    UrlUtil ut=new UrlUtil(tx.getText(),ts);
   
   }
  });
[color=#0033ff,strength=3);] }
public static void main(String args[]) {
  MainForm main = new MainForm("网络抓取器");
}
[color=#0033ff,strength=3);]}
class UrlUtil extends Thread{

private JTextArea ts;
private String ul;
public UrlUtil(String ul,JTextArea ts)
{
  this.ul=ul;
  this.ts=ts;
  Thread thread=new Thread(this);
  thread.start();
  
}
    InputStream is=null;
    BufferedReader reader=null;
    StringBuffer buf=new StringBuffer();
public void getContents(String ul,JTextArea ts) {
  
}


public void run()
{
  
  String line="";
     int count=0;
   try {
    URL url = new URL(ul);
    URLConnection con = url.openConnection();
    con.connect();
    is=con.getInputStream();
    reader=new BufferedReader(new InputStreamReader(is,"gbk"));
    while((line=reader.readLine())!=null)
    {
     //buf.append(line);
     //buf.append("\n");
     ts.append(line);
     //ts.append("\n");
     Thread.sleep(200);
    }
   }
   catch(InterruptedException e)
   {
   e.printStackTrace();
   }
   catch (Exception e) {
    e.printStackTrace();
   }
          // ts.setText(buf.toString());
  
}
}