使用WinPcap捕获数据包

问题描述

我已经安装了WinPcap来捕获数据包.并且我还复制了一些文件.dll扩展名并粘贴到JDK中.但是我的第一行仍然存在一些问题，即在"import jpcap.JpcapCaptor"中，我不知道为什么这正在发生...虽然我将其(jpcap.dll)复制并粘贴到了我的JDK中... plz帮助....并提供了一些有关如何捕获数据包的建议...我的平台是netbeans 7.0

I have installed WinPcap for capturing packet.. and i also copied some files .dll extension and paste in JDK.. but still some problems are in my first line i.e in "" import jpcap.JpcapCaptor"" i donot know why this is happening... though i copied and paste it (jpcap.dll) in my JDK... plz help.... and give some advice how to capture packets... my platform is netbeans 7.0

import jpcap.JpcapCaptor;
import jpcap.NetworkInterface;
import jpcap.NetworkInterfaceAddress;
import java.io.IOException;
import java.util.Scanner;
import javax.swing.JFrame;

public class PacketAnalyser { static String text="";
public String capture(){
	try {
		captor=JpcapCaptor.openDevice(devices[index], 65535, true, 20);
		long[] packs = new long[20];
		int tcp = 0;
		int udp = 1;
		for(int j = 0;j<10;j++){
		long count1 = 0;
		long count2 = 0;
		captor.setFilter("tcp and ip", true);
		for(int i=0;i<10;i++){

		text1=text1+captor.getPacket()+"\n";
		if(captor.getPacket()!=null){count1++;}}
		text1=text1+captor.dropped_packets + " packets dropped by kernel\n";
		text1=text1+count1+"\n"  ;
		captor.setFilter("udp and ip", true);
		for(int i=0;i<10;i++){
		text1=text1+captor.getPacket()+"\n"  ;
		if(captor.getPacket()!=null){count2++;}
		}
		text1=text1+captor.dropped_packets + " packets dropped by kernel\n";
		text1=text1+count2+"\n";
		packs[tcp]=count1;
		packs[udp]=count2;
		tcp+=2;
		udp+=2;
		}

	captor.close();
	return text1; }}

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