java利用Jpcap实现抓包

import java.io.IOException;

import java.util.Scanner;

import jpcap.JpcapCaptor;

import jpcap.NetworkInterface;

import jpcap.NetworkInterfaceAddress;

import jpcap.PacketReceiver;

import jpcap.packet.Packet;

/**

 * Jpcat实现抓包

 */

public class NetCapture implements PacketReceiver{

  @Override

  public void receivePacket(Packet arg0) {

    System.out.println(arg0);

  }

  public static void main(String[] args){

//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

    try {

      JpcapCaptor jpcapCaptor = JpcapCaptor.openDevice(devices[index], 2000, false, 20);

      jpcapCaptor.loopPacket(-1, new NetFetcher());

    } catch (IOException e) {

// TODO Auto-generated catch block

      e.printStackTrace();

    }

  }

}