java网卡地址（java获取网关ip）

本篇文章给大家谈谈java网卡地址，以及java获取网关ip对应的知识点，希望对各位有所帮助，不要忘了收藏本站喔。

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本文目录一览：

• 1、java怎样取得网卡物理地址
• 2、java如何获取mac地址？
• 3、java 获取无线 mac地址吗
• 4、java程序对于双网卡怎么获取两块网卡IP

java怎样取得网卡物理地址

给你一个局域网的聊天程序或许对你有用！！！

import java.net.*;

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import java.util.GregorianCalendar;

import javax.swing.JDialog;

public class QQ extends Frame implements ActionListener {

Label label1 = new Label("请输入您要发纤橘送的信息（限英文）：");

Label label2 = new Label("以下是你收到的消息记录："歼竖誉);

Label label3 = new Label("氏段把以上消息发给如下IP地址：");

TextArea input = new TextArea("", 7, 14, TextArea.SCROLLBARS_BOTH);

TextArea output = new TextArea("", 8, 14, TextArea.SCROLLBARS_BOTH);

TextField IPAdd = new TextField("192.168.1.88");

Button send = new Button("发送消息");

Button about = new Button("关于");

Button clear = new Button("清空消息纪录");

GregorianCalendar time = new GregorianCalendar();

QQ() {

super("仿QQ聊天工具");

setLayout(null);

setLocation(250, 250);

this.setSize(518, 218);

this.setResizable(false); // 大小不可变

this.setBackground(new Color(220, 220, 220));

Toolkit kit = Toolkit.getDefaultToolkit();

Image myImage = kit.getImage("icons\\QQ.bmp");

this.setIconImage(myImage);

label1.setFont(new Font("宋体", Font.PLAIN, 12));

label1.setForeground(new Color(0, 0, 192));

label1.setBounds(8, 28, 216, 16);

input.setBackground(new Color(255, 255, 128));

input.setFont(new Font("Times New Roman", Font.BOLD, 15));

input.setForeground(Color.magenta);

input.setBounds(8, 44, 248, 120);

output.setBackground(new Color(128, 255, 255));

output.setFont(new Font("Times New Roman", Font.PLAIN, 12));

output.setForeground(Color.magenta);

output.setBounds(264, 44, 248, 136);

output.setEditable(false);

send.setFont(new Font("新宋体", Font.PLAIN, 12));

send.setLocation(136, 188);

send.setSize(120, 22);

clear.setFont(new Font("新宋体", Font.PLAIN, 12));

clear.setLocation(392, 188);

clear.setSize(120, 22);

label2.setFont(new Font("宋体", Font.PLAIN, 12));

label2.setForeground(new Color(0, 0, 192));

label2.setBounds(264, 28, 216, 16);

about.setFont(new Font("新宋体", Font.PLAIN, 12));

about.setLocation(264, 188);

about.setSize(120, 22);

label3.setFont(new Font("宋体", Font.PLAIN, 12));

label3.setForeground(new Color(0, 0, 192));

label3.setBounds(8, 172, 160, 16);

IPAdd.setFont(new Font("新宋体", Font.PLAIN, 12));

IPAdd.setLocation(8, 190);

IPAdd.setSize(120, 19);

add(label1);

add(input);

add(label3);

add(label2);

add(output);

add(IPAdd);

add(send);

add(about);

add(clear);

addWindowListener(new closeWin());

send.addActionListener(this);

about.addActionListener(this);

clear.addActionListener(this);

setVisible(true);

waitForData();

}

public void actionPerformed(ActionEvent e) {

if (e.getSource() == send)

sendData();

else if (e.getSource() == clear)

output.setText("");

else if (e.getSource() == about) {

AboutQQ test = new AboutQQ(this);

}

}

public static void main(String args[]) {

new QQ();

}

void sendData() {

try {

String msg = input.getText();

if (msg.equals(""))

return ;

input.setText("");

String ad = IPAdd.getText();

InetAddress tea = InetAddress.getLocalHost();

String asd = tea.getHostAddress();//发送方的IP地址

output.append("[" + asd + "]:(" + time.get(GregorianCalendar.YEAR)

+ "-" + time.get(GregorianCalendar.MONTH) + "-"

+ time.get(GregorianCalendar.DATE) + " "

+ time.get(GregorianCalendar.HOUR) + ":"

+ time.get(GregorianCalendar.MINUTE) + ":"

+ time.get(GregorianCalendar.SECOND) + ") " + "\n" + msg

+ "\n");

msg = "From [" + asd + "]:(" + time.get(GregorianCalendar.YEAR)

+ "-" + time.get(GregorianCalendar.MONTH) + "-"

+ time.get(GregorianCalendar.DATE) + " "

+ time.get(GregorianCalendar.HOUR) + ":"

+ time.get(GregorianCalendar.MINUTE) + ":"

+ time.get(GregorianCalendar.SECOND) + ") \n" + msg;

InetAddress address = InetAddress.getByName(ad);

int len = msg.length();

byte[] message = new byte[len];

msg.getBytes(0, len, message, 0);

DatagramPacket packet = new DatagramPacket(message, len, address,

9999);

DatagramSocket socket = new DatagramSocket();

socket.send(packet);

} catch (Exception e) {

}

}

void waitForData() {

try {

byte[] buffer = new byte[1024];

DatagramPacket packet = new DatagramPacket(buffer, buffer.length);

DatagramSocket socket = new DatagramSocket(9999);

while (true) {

socket.receive(packet);

String s = new String(buffer, 0, 0, packet.getLength());

output.append(s + "\n");

packet = new DatagramPacket(buffer, buffer.length);

}

} catch (Exception e) {

}

}

}

class closeWin extends WindowAdapter {

public void windowClosing(WindowEvent e) {

Frame fr = (Frame) (e.getSource());

fr.dispose();

System.exit(0);

}

}

class AboutQQ {

private Label label;

private JDialog dialog;

public AboutQQ(Frame f){

label = new Label("Version 1.0");

dialog = new JDialog(f, "About", true);

dialog.setLocation(f.getLocation());

Container dialogPane = dialog.getContentPane();

dialogPane.setLayout(new BorderLayout());

dialogPane.add(label);

dialogPane.setBounds(50,50,50,50);

dialog.pack();

dialog.setVisible(true);

}

}

java如何获取mac地址？

以windows举例。

运行命令" cmd ipconfig /all"就会出现以下结果

Physical Address. . . . . . . . . : 20-CF-30-9A-60-EE

。

java就能掘兆过这样的命令来获取。以下是示例。

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

public class TestMac

{

public static void main(String[] args) {

System.out.println("Operation System=" + getOsName());

System.out.println("Mac Address=" + getMACAddress());

System.out.println("通过ip获取mac"+getMACAddress("橘散旅192.168.1.101"));

}

public static String getOsName() {

String os = "";

os = System.getProperty("os.name");

return os;

}

public static String getMACAddress() {

String address = "";

String os = getOsName();

if (os.startsWith("Windows")) {

try {

String command = "cmd.exe /c ipconfig /all";

Process p = Runtime.getRuntime().exec(command);

BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));

String line;

while ((line = br.readLine()) != null) {

if (line.indexOf("Physical Address") 圆凳 0) {

int index = line.indexOf(":");

index += 2;

address = line.substring(index);

break;

}

}

br.close();

return address.trim();

} catch (IOException e) {

}

} else if (os.startsWith("Linux")) {

String command = "/bin/sh -c ifconfig -a";

Process p;

try {

p = Runtime.getRuntime().exec(command);

BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));

String line;

while ((line = br.readLine()) != null) {

if (line.indexOf("HWaddr") 0) {

int index = line.indexOf("HWaddr") + "HWaddr".length();

address = line.substring(index);

break;

}

}

br.close();

} catch (IOException e) {

}

}

address = address.trim();

return address;

}

public static String getMACAddress(String ipAddress) {

String str = "", strMAC = "", macAddress = "";

try {

Process pp = Runtime.getRuntime().exec("nbtstat -a " + ipAddress);

InputStreamReader ir = new InputStreamReader(pp.getInputStream());

LineNumberReader input = new LineNumberReader(ir);

for (int i = 1; i 100; i++) {

str = input.readLine();

if (str != null) {

if (str.indexOf("MAC Address") 1) {

strMAC = str.substring(str.indexOf("MAC Address") + 14,

str.length());

break;

}

}

}

} catch (IOException ex) {

return "Can't Get MAC Address!";

}

//

if (strMAC.length() 17) {

return "Error!";

}

macAddress = strMAC.substring(0, 2) + ":" + strMAC.substring(3, 5)

+ ":" + strMAC.substring(6, 8) + ":" + strMAC.substring(9, 11)

+ ":" + strMAC.substring(12, 14) + ":"

+ strMAC.substring(15, 17);

//

return macAddress;

}

}

剑天梦的回答原理和我这个一样，都是通过Process 执行命令。 我直接补充到答案里了。不过

我这边运行那个命令出来的结果很多，那么花的时间就长了。优点是能够获取别人的mac地址 。

java 获取无线 mac地址吗

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.io.LineNumberReader;

public class GetMac {

/**

* java获取客户端网卡的MAC地址

*

* @param args

*/

public static void main(String[] args) {

GetMac get = new GetMac();

System.out.println("1="+get.getMAC());

System.out.println("2="+get.getMAC("127.0.0.1"));

}

// 1.获取客户端ip地址( 这个必须从客户端传到后台)：

// jsp页面下，很简单，request.getRemoteAddr() ;

// 因为系统的VIew层是用JSF来实现的，因此页面上没法直接获得类似request，在bean里做了个强制转换

// public String getMyIP() {

// try {

// FacesContext fc = FacesContext.getCurrentInstance();

// HttpServletRequest request = (HttpServletRequest) fc

// .getExternalContext().getRequest();

// return request.getRemoteAddr();

// } catch (Exception e) {

// e.printStackTrace();

// }

// return "";

// }

// 2.获取客户端mac地址

// 调用window的命令，在后台Bean里实现 通过ip来获取mac地址。方法如下：

// 运行速度【快】

public String getMAC() {

String mac = null;

try {

Process pro = Runtime.getRuntime().exec("cmd.exe /c ipconfig/all");

InputStream is = pro.getInputStream();

BufferedReader br = new BufferedReader(new InputStreamReader(is));

String message = br.readLine();

int index = -1;

while (message != null) {

if ((index = message.indexOf("Physical Address")) 0) {

mac = message.substring(index + 36).trim();

break;

}

message = br.readLine();

}

System.out.println(mac);

br.close();

pro.destroy();

} catch (IOException e) {

System.out.println("Can't get mac address!");

return null;

}

return mac;

}

// 运行速度【慢渗烂】

public String getMAC(String ip) {

String str = null;

String macAddress = null;

try {

Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);

InputStreamReader ir = new InputStreamReader(p.getInputStream());

LineNumberReader input = new LineNumberReader(ir);

for (; true;) {

str = input.readLine();

if (str != null) {

if (str.indexOf("MAC Address") 州喊蚂 1) {

macAddress = str

.substring(str.indexOf("册埋MAC Address") + 14);

break;

}

}

}

} catch (IOException e) {

e.printStackTrace(System.out);

return null;

}

return macAddress;

}

}

java程序对于双网卡怎么获取两块网卡IP

用双网卡同时访问内外网暂时没有很完美的解决办法，陆枯因为存在路由冲突，毕竟有两个网关地址，现在可以试试下面的办法：

先来解决双网卡冲突的问题。可以通过改变路由地址表搞定。以你的单位用机为例，机器有两块网卡，接到两台路由器上：

内部网地址设置闷稿为192.168.1.110，子网掩码：255.255.255.0，网关：192.168.1.1

办公网地址：10.94.12.123，子网掩码：255.255.255.0，网关：10.94.12.254

如果按正常的设置方法设置每块网卡的IP地址和网关，再cmd下使用route print查看时会看到以0.0.0.0 0.0.0.0 开头的两个东西，即指向0.0.0.0的有两个网关，这样就会出现路由冲突，两个网络的访问存在困难。要实现同时访问两个网络就要用到route命令

第一步：route delete 0.0.0.0(删除所有0.0.0.0的路由)

第二步：route add 0.0.0.0 mask 0.0.0.0 192.168.1.1(添加0.0.0.0网络路由)

第三步：route add 10.0.0.0 mask 255.0.0.0 10.94.12.254(添加10.0.0.0网络路由)

这时就可以同时访问两个网络了，但碰到一个问题，使用上述命令添加的路由在系统重新启动后会蚂悉孝自动丢失，保存现有的路由表

作一个BAT文件吧，把上面3步的内容全加进去，并设置系统在开始的启动菜单里运行他。这样只要一开机，路由表就会按我们所需要的进行变更，双网的访问再也不会存在问题了。

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