1、第一步：下载wincap，jpcap，鉴于不好下载问题，大家可以去网络找，如图：
2、第二步：解压，里面的wincap.exe直接下一步安装就好。把压缩包里面的jpcap.dll放到jdk的bin目录，如图：
3、第三步：创建项目，引入压缩包里面jpcap.jar，如图：
4、第四步：编写代码。创建一个类，并实现PacketReceiver ，代码如下：public class Demo3 implements PacketReceiver { @Override public void receivePacket(Packet packet) { }}
5、第五步：对Packet进行解析，里面又tcp,udp和其他请求，通过instanceof判断，代码如下：@Overridepublic void receivePacket(Packet packet) { if (packet instanceof jpcap.packet.TCPPacket) { // tcp请求 }else if (packet instanceof jpcap.packet.UDPPacket){ // UDP请求 }else{ // 其他请求比如ping }}
6、第六步：统计里面的流量，tcp和udp统计后进行总数相加，就是上传下载的流量，代码如下：@Overridepublic void receivePacket(Packet packet) { if (packet instanceof jpcap.packet.TCPPacket) { // tcp请求 TCPPacket tcp = (TCPPacket) packet; System.out.println("TCP源IP地址:"+tcp.src_ip+"目的IP地址:"+tcp.dst_ip +"包长度:"+tcp.len); tcpPacketCount+=tcp.len; }else if (packet instanceof jpcap.packet.UDPPacket){ // UDP请求 UDPPacket udp = (UDPPacket) packet; System.out.println("TCP源IP地址:"+udp.src_ip+"目的IP地址:"+udp.dst_ip +"包长度:"+udp.len); udpPacketCount += udp.len; }else{ // 其他请求比如ping System.out.println("***捕获到非运输层协议的其他包！！！"); } System.out.println("总流量为： "+(tcpPacketCount+udpPacketCount));}
7、第七步：写main方法进行网卡选择，选择你正在上网的那个网卡，找到对应ipv6地址，然后输入网卡下标，回车就会看到效果，代码如下：public static void main(String[] args) throws Exception { //获得网卡设备列表 NetworkInterface[] devices = JpcapCaptor.getDeviceList(); if (devices.length == 0) { System.out.println("无网卡信息！"); return; } //输出网卡信息 for (int i = 0;i < devices.length;i++) { System.out.println("网卡" + i + "信息:" + devices[i].name); for (NetworkInterfaceAddress address :devices[i].addresses) { System.out.print(address.address + " "); } System.out.println("\n"); } Scanner scan = new Scanner(System.in); System.out.println("请选择您要监听的网卡序号："); int index = scan.nextInt(); //监听选中的网卡 System.out.println(devices[index].name); JpcapCaptor jpcapCaptor = JpcapCaptor.openDevice(devices[index], 2000, false, 20); jpcapCaptor.loopPacket(-1, new Demo3());}
8、第八步：全部代码和效果如下：/*** 多多支持，不懂留言，相互学习*/public class Demo3 implements PacketReceiver { private static int tcpPacketCount = 0; private static int udpPacketCount = 0; @Override public void receivePacket(Packet packet) { if (packet instanceof jpcap.packet.TCPPacket) { // tcp请求 TCPPacket tcp = (TCPPacket) packet; System.out.println("TCP源IP地址:"+tcp.src_ip+"目的IP地址:"+tcp.dst_ip +"包长度:"+tcp.len); tcpPacketCount+=tcp.len; }else if (packet instanceof jpcap.packet.UDPPacket){ // UDP请求 UDPPacket udp = (UDPPacket) packet; System.out.println("TCP源IP地址:"+udp.src_ip+"目的IP地址:"+udp.dst_ip +"包长度:"+udp.len); udpPacketCount += udp.len; }else{ // 其他请求比如ping System.out.println("***捕获到非运输层协议的其他包！！！"); } System.out.println("总流量为： "+(tcpPacketCount+udpPacketCount)); } public static void main(String[] args) throws Exception { //获得网卡设备列表 NetworkInterface[] devices = JpcapCaptor.getDeviceList(); if (devices.length == 0) { System.out.println("无网卡信息！"); return; } //输出网卡信息 for (int i = 0;i < devices.length;i++) { System.out.println("网卡" + i + "信息:" + devices[i].name); for (NetworkInterfaceAddress address :devices[i].addresses) { System.out.print(address.address + " "); } System.out.println("\n"); } Scanner scan = new Scanner(System.in); System.out.println("请选择您要监听的网卡序号："); int index = scan.nextInt(); //监听选中的网卡 System.out.println(devices[index].name); JpcapCaptor jpcapCaptor = JpcapCaptor.openDevice(devices[index], 2000, false, 20); jpcapCaptor.loopPacket(-1, new Demo3()); }}
9、第九步：以上代码纯手打，希望可以帮到大家