Java网络嗅探器错误问题

Question

我正在尝试使用我在网上找到的旧教程用 Java 编写数据包嗅探器，但在调试时遇到问题。我收到一条错误消息，指出我的类 pktSniffer 未继承抽象方法。

import jpcap.*;
import jpcap.packet.Packet;
import jpcap.PacketReceiver;

public class pktSniffer implements PacketReceiver {

public void handlePacket(Packet packet){

        System.out.println(packet);
}

public static void main(String[] args) throws java.io.IOException{

    NetworkInterface[] lists=jpcap.JpcapCaptor.getDeviceList();

    System.out.println("\n\t\t***Network Sniffer***\n");

    System.out.println("Found the following devices : ");

    for(NetworkInterface s: lists)
    {
        System.out.println("Name: " + s.name +" Description: " + s.description);
    }

    JpcapCaptor jpcap=JpcapCaptor.openDevice(JpcapCaptor.getDeviceList()[1],1000,false,20);
    jpcap.loopPacket(-1,new pktSniffer());

    }
}

Answer 1

not inheriting an abstract method

您确定错误不是因为您没有实现抽象方法吗？

根据:

• http://netresearch.ics.uci.edu/kfujii/Jpcap/doc/javadoc/jpcap/PacketReceiver.html

和

• http://code.google.com/p/jdc-client/source/browse/trunk/JDC-Client+1.0/src/jpcap/PacketReceiver.java?r=8

你的方法应该被称为receivePacket而不是handlePacket