java获取ip地址

12年前

import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.net.InetAddress; import java.net.UnknownHostException; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextField; public class ip extends JFrame implements ActionListener { private static final long serialVersionUID = 3339481369781127417L; JButton jb1; JButton jb2; JButton jb3; JPanel jp; JLabel jl; JLabel jl1; JTextField jt; public ip() { this.jp = new JPanel(); this.jl = new JLabel(); this.jl1 = new JLabel("您的域名："); this.jb1 = new JButton("提交"); this.jb2 = new JButton("重置"); this.jb3 = new JButton("退出"); this.jt = new JTextField(20); this.jb1.addActionListener(this); this.jb2.addActionListener(this); this.jb3.addActionListener(this); this.jp.setLayout(new GridLayout(3, 2)); this.jp.add(this.jl1); this.jp.add(this.jt); this.jp.add(this.jb1); this.jp.add(this.jl); this.jp.add(this.jb2); this.jp.add(this.jb3); setBounds(200, 200, 500, 240); add(this.jp); setVisible(true); setDefaultCloseOperation(3); } public static void main(String[] args) { new ip(); } public void actionPerformed(ActionEvent e) { if (e.getSource() == this.jb1) { String url = this.jt.getText(); InetAddress ip = null; try { ip = InetAddress.getByName(url); } catch (UnknownHostException e1) { e1.printStackTrace(); } this.jl.setText(ip.toString()); } else if (e.getSource() == this.jb2) { this.jl.setText(""); this.jt.setText(""); } else { System.exit(0); } } }