java使用jpcap抓包工具获得本机发送的所有tcp请求
java使用jpcap抓包工具获得本机发送的所有tcp请求，根据tcp请求的内容可以调试某个应用启动后对外发送的相关http请求或者sql连接请求，这样可以很好的调试我们的程序。很不错的一种应用无侵入性的调试本机发送的http接口，sql连接接口等。 我先启动给一个查询数据库的一个应用，然后再启动下面的程序， 输出结果如下： import java.io.UnsupportedEncodingException; import java.net.InetAddress; import jpcap.*; import jpcap.packet.EthernetPacket; import jpcap.packet.Packet; import jpcap.packet.TCPPacket; class Tcpdump implements PacketReceiver { public void receivePacket(Packet packet) { // System.out.println(packet); if (packet instanceof TCPPacket) { TCPPacket tcpPacket = (TCPPacket) packet; if(tcpPacket.src_ip.getHostAddress().equals(getIp())){ EthernetPacket ethernetPacket = (EthernetPacket) packet.datalink; System.out.print("源IP：" + tcpPacket.src_ip + " 目的IP：" + tcpPacket.dst_ip + "发送端口：" + tcpPacket.src_port + " 接收端口：" + tcpPacket.dst_port + "\n"); System.out .print("源MAC：" + ethernetPacket.getSourceAddress() + " 目的MAC：" + ethernetPacket.getDestinationAddress() + "\n"); System.out.print("协议：" + tcpPacket.protocol + "\n"); System.out.print("数据：\n"); try { System.out.println(new String(tcpPacket.data,"utf-8")); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } // for (int i = 0; i < tcpPacket.data.length; i++) // System.out.print((char) tcpPacket.data[i]); } } } public static String getIp(){ InetAddress inet = null; try { inet = InetAddress.getLocalHost(); String ip = inet.getHostAddress(); //在某些linux机器上取到的ip是host绑定的本机ip，即127.0.0.1 return ip; }catch(Exception e){ } return null; } }
