小程序[邮箱提取器-EmailSplider]总结

package test;

import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

public class EmailSplider extends JFrame {

    private static final long serialVersionUID = -2498717483036732605L;
    private JTextField txtHttpvtiebabaiducomp;
    private JTextArea txtrn;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    EmailSplider frame = new EmailSplider();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }
    
    private String ReadHtml(URL txtUrl){

        StringBuffer sb = new StringBuffer();
        try {
            URLConnection conn =txtUrl.openConnection();
            BufferedReader bf = new BufferedReader( new InputStreamReader( conn.getInputStream(),"utf-8"));
            String str = null;
            while((str = bf.readLine()) != null){
                sb.append(str);
            }
            bf.close();
        } catch (IOException e1) {
            e1.printStackTrace();
        }
        return sb.toString();
    }
    

    /**
     * Create the frame.
     */
    public EmailSplider() {
        setResizable(false);
        setTitle("\u90AE\u7BB1\u63D0\u53D6\u5668");
        setSize(663, 507);
        this.setLocationRelativeTo(null);  //居中窗体
        getContentPane().setLayout(null);
        
        JLabel label = new JLabel("\u8BF7\u8F93\u5165\u7F51\u5740");
        label.setBounds(10, 10, 71, 15);
        getContentPane().add(label);
        
        txtHttpvtiebabaiducomp = new JTextField();
        txtHttpvtiebabaiducomp.setText("http://v.tieba.baidu.com/p/3349997454");
        txtHttpvtiebabaiducomp.setBounds(82, 7, 493, 21);
        getContentPane().add(txtHttpvtiebabaiducomp);
        txtHttpvtiebabaiducomp.setColumns(10);
        
        JButton button = new JButton("\u63D0\u53D6");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                new Thread( () -> {                    
                    try {
                        URL txtUrl = new URL(txtHttpvtiebabaiducomp.getText());
                        String html = ReadHtml(txtUrl);
                                                    
                        Pattern p =Pattern.compile("[a-zA-Z0-9_-]+@\\w+\\.[a-z]+(\\.[a-z]+)?");
                        Matcher m = p.matcher(html);
                        
                        while(m.find()){
                            //System.out.println(m.group());
                            try {
                                SwingUtilities.invokeAndWait(()->{                                    
                                    txtrn.append(System.getProperty("line.separator")+m.group());
                                    txtrn.setCaretPosition(txtrn.getText().length());
                                });
                            } catch (Exception e1) {
                                e1.printStackTrace();
                            }                        
                        }                            
                    } catch (MalformedURLException e1) {
                        JOptionPane.showMessageDialog(null, "请输入合法的网址！\n 必须以http:// 开头", "操作提示", JOptionPane.ERROR_MESSAGE);
                        return;
                    }                    
                }).start();
            }
        });
        button.setBounds(585, 6, 62, 23);
        getContentPane().add(button);        
        
        txtrn = new JTextArea();
        txtrn.setText("\u8FD9\u91CC\u663E\u793A\u63D0\u53D6\u7684\u90AE\u7BB1");
        txtrn.setLineWrap(true);
        
        JScrollPane jScrollPane = new JScrollPane(txtrn);
        jScrollPane.setBounds(10, 35, 637, 432);
        getContentPane().add(jScrollPane );
        
        jScrollPane.setVerticalScrollBarPolicy( 
                JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
    }
}