Jpcap使用指南

import jpcap.JpcapCaptor;
import jpcap.NetworkInterface;
import jpcap.NetworkInterfaceAddress;
public class TCPCollection {
	public static void main(String[] args){
		NetworkInterface[] devices = JpcapCaptor.getDeviceList();//获取网络接口列表
		for(int i = 0; i < devices.length; i++){
			//名称、描述
			System.out.println(i + "：" + devices[i].name + "(" + devices[i].description + ")");
			//数据链路层名称、描述
			System.out.println("datalink：" + devices[i].datalink_name + "(" + devices[i].datalink_description + ")");
			//MAC地址
			System.out.print(" MAC address：");
			for(byte b: devices[i].mac_address){
				System.out.print(Integer.toHexString(b & 0xff) + ":");
			}
			System.out.println();
			//IP地址、子网掩码、广播地址
			for(NetworkInterfaceAddress a : devices[i].addresses){
				System.out.println(" address: " + a.address + "|" + a.subnet + "|" + a.broadcast);
			}
		}
	}	
}

public static void main(String[] args){
	NetworkInterface[] devices = JpcapCaptor.getDeviceList();//获取网络接口列表
	int index = 0;
	try {
		JpcapCaptor captor = JpcapCaptor.openDevice(devices[index], 65535, false, 20);
	} catch (IOException e) {
		e.printStackTrace();
		System.out.println("抓取数据包时出现异常!!!");
	}
}	

class PacketPrinter implements PacketReceiver {
	//this method is called every time Jpcap captures a packet
	public void receivePacket(Packet packet){
		System.out.print(packet);
	}
}

JpcapCaptor captor = JpcapCaptor.openDevice(devices[index], 65535, false, 20);
captor.processPacket(2, new PacketPrinter());
captor.close();

            JpcapCaptor captor = JpcapCaptor.openDevice(devices[index], 65535, false, 20);
			for(int i=0; i<10; i++){
				System.out.println(i + ":" + captor.getPacket());
			}
			captor.close();

			JpcapCaptor captor = JpcapCaptor.openDevice(devices[index], 65535, false, 20);
			captor.setFilter("ip and tcp", true);

			JpcapCaptor captor = JpcapCaptor.openDevice(devices[index], 65535, false, 20);
			JpcapWriter writer = JpcapWriter.openDumpFile(captor, "yourfilename");

			for(int i=0; i<10; i++){
				Packet packet = captor.getPacket();
				writer.writePacket(packet);
			}
			writer.close();