jpcap抓包java代码以及依赖

import jpcap.JpcapCaptor; import jpcap.NetworkInterface; import jpcap.packet.IPPacket; import jpcap.packet.Packet; import java.io.IOException; public class TCPTest { public static void main(String[] args) throws IOException { NetworkInterface[] devices = JpcapCaptor.getDeviceList(); for (NetworkInterface n : devices) { System.out.print(n.name + " | " + n.description + " | "); byte[] mac_address = n.mac_address; for (int i = 0; i < mac_address.length; i++) { System.out.print(Integer.toHexString(mac_address[i] & 0xff) + "-"); } System.out.println(); } JpcapCaptor jpcap = JpcapCaptor.openDevice(devices[5], 2000, false, 20); int i = 0; while (i < 10) { Packet packet = jpcap.getPacket(); if (packet instanceof IPPacket && ((IPPacket) packet).version == 4) { i++; IPPacket ip = (IPPacket) packet;//强转 System.out.println("版本：IPv4"); System.out.println("优先权：" + ip.priority); System.out.println("区分服务：最大的吞吐量： " + ip.t_flag); System.out.println("区分服务：最高的可靠性：" + ip.r_flag); System.out.println("长度：" + ip.length); System.out.println("标识：" + ip.ident); System.out.println("DF:Don't Fragment: " + ip.dont_frag); System.out.println("NF:Nore Fragment: " + ip.more_frag); System.out.println("片偏移：" + ip.offset); System.out.println("生存时间：" + ip.hop_limit); String protocol = ""; switch (new Integer(ip.protocol)) { case 1: protocol = "ICMP"; break; case 2: protocol = "IGMP"; break; case 6: protocol = "TCP"; break; case 8: protocol = "EGP"; break; case 9: protocol = "IGP"; break; case 17: protocol = "UDP"; break; case 41: protocol = "IPv6"; break; case 89: protocol = "OSPF"; break; default: break; } System.out.println("协议：" + protocol); System.out.println("源IP " + ip.src_ip.getHostAddress()); System.out.println("目的IP " + ip.dst_ip.getHostAddress()); System.out.println("源主机名： " + ip.src_ip); System.out.println("目的主机名： " + ip.dst_ip); System.out.println("----------------------------------------------"); } } } }