手摸手教你使用java GUI开发 调用NetworkInterface API

0、前言

没有前言，直接开搞！！！

1、准备

集成开发环境：IDEA
JDK：1.8

2、创建项目

3、 项目结构

单文件就随便怎么放了

4、代码

Demo.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.net.*;
import java.util.*;

/**
 * @author KonBAI
 * @version 1.0
 * Create by 2020/05/10 01:08
 */
public class Demo extends JFrame {

    /**
     * 窗口标题
     */
    // TODO: 根据自己需要修改窗口标题
    public static final String WINDOWS_TITLE = "名字-333";

    public Demo() {
        initComponents();
    }

    @SuppressWarnings("unchecked")
    private void initComponents() {

        JLabel inputLabel = new JLabel();
        // 接收用户输入内容
        JTextField inputTextField = new JTextField();
        // 提交按钮
        JButton submitBtn = new JButton();
        // 获取所有的网络接口信息按钮
        JButton findAllBtn = new JButton();
        JScrollPane scrollPane = new JScrollPane();
        // 输出文本
        JTextArea viewTextArea = new JTextArea();

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setTitle(WINDOWS_TITLE);

        inputLabel.setText("请输入 IP/InterfaceName:");

        submitBtn.setText("提 交");
        submitBtn.addActionListener(evt -> jButtonActionPerformed(evt, viewTextArea, inputTextField.getText()));

        findAllBtn.setText("获取所有的网络接口信息");
        findAllBtn.addActionListener(evt -> jButtonActionPerformed(evt, viewTextArea, null));

        viewTextArea.setColumns(20);
        viewTextArea.setRows(10);
        scrollPane.setViewportView(viewTextArea);

        GroupLayout layout = new GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING, false)
                                .addGroup(layout.createSequentialGroup()
                                        .addContainerGap()
                                        .addComponent(inputLabel, GroupLayout.PREFERRED_SIZE, 150, GroupLayout.PREFERRED_SIZE)
                                        .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
                                        .addComponent(inputTextField, GroupLayout.PREFERRED_SIZE, 180, GroupLayout.PREFERRED_SIZE)
                                        .addGap(18, 18, 18)
                                        .addComponent(submitBtn, GroupLayout.PREFERRED_SIZE, 80, GroupLayout.PREFERRED_SIZE))
                                .addGroup(layout.createSequentialGroup()
                                        .addGap(46, 46, 46))
                                .addGroup(layout.createSequentialGroup()
                                        .addContainerGap()
                                        .addComponent(findAllBtn, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                .addGroup(layout.createSequentialGroup()
                                        .addContainerGap()
                                        .addComponent(scrollPane)))
                        .addContainerGap(20, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                        .addGap(19, 19, 19)
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(inputLabel, GroupLayout.PREFERRED_SIZE, 23, GroupLayout.PREFERRED_SIZE)
                                .addComponent(inputTextField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                                .addComponent(submitBtn))
                        .addComponent(findAllBtn)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(scrollPane, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                        .addContainerGap(20, Short.MAX_VALUE))
        );
        pack();
    }

    private void jButtonActionPerformed(ActionEvent evt, JTextArea viewTextArea, String input) {
        viewTextArea.setText("");
        boolean flag = false;
        try {
            //获取所有接口，并放进枚举集合中，然后使用Collections.list()将枚举集合转换为ArrayList集合
            ArrayList<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (Iterator<NetworkInterface> interfaceIterator = interfaces.iterator(); interfaceIterator.hasNext(); ) {
                NetworkInterface networkInterface = interfaceIterator.next();
                String intName = networkInterface.getName(); //获取接口名
                //获取每个接口中的所有ip网络接口集合，因为可能有子接口
                ArrayList<InetAddress> inets = Collections.list(networkInterface.getInetAddresses());
                for (Iterator<InetAddress> inetAddrIterator = inets.iterator(); inetAddrIterator.hasNext(); ) {
                    InetAddress inetAddress = inetAddrIterator.next();
                    //只筛选ipv4地址，否则会同时得到Ipv6地址
                    if (inetAddress instanceof Inet4Address) {
                        String ip = inetAddress.getHostAddress();
                        if (Objects.isNull(input)) {
                            flag = true;
                            viewTextArea.append("InetfaceName:" + intName + " | IPv4:" + ip + "\n");
                        } else if (intName.equals(input) || ip.equals(input)) {
                            flag = true;
                            viewTextArea.append("InetfaceName:" + intName + " | IPv4:" + ip + "\n");
                        }
                    }
                }
            }
            if (!flag) {
                viewTextArea.setText("未找到 '" + input + "' 相关IP/InterfaceName，请重新输入");
            }
        } catch (SocketException s) {
            s.printStackTrace();
        }
    }

    public static void main(String[] args) {
    	// TODO: 添加窗口样式
    	
        EventQueue.invokeLater(() -> new Demo().setVisible(true));
    }

}

5、运行截图

5、自定义修改

• 1、修改窗口标题

• 2、添加窗口样式(可有可无)
  
  添加代码如下 ：

// TODO: 添加窗口样式
  try {
      /**
       * Metal风格: javax.swing.plaf.metal.MetalLookAndFeel
       * Nimbus风格: javax.swing.plaf.nimbus.NimbusLookAndFeel
       * Motif风格: com.sun.java.swing.plaf.motif.MotifLookAndFeel
       * Windows风格: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
       * WindowsClassic风格: com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel
       */
      UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
  } catch (Exception e) {
      e.printStackTrace();
  }