好的，这是我的问题，我试图让 jnetpcap 在 ubuntu 中工作，但我遇到了一些问题。我尝试使用 jnetpcap 网站上的说明进行安装，将 jar 添加到构建路径很好，但我似乎无法在 Eclipse 上运行任何程序。我的代码如下。我收到的错误消息是“找不到任何设备，错误是”。除了将 jar 添加到构建路径之外，安装时我还应该做些什么，还是另一个问题？
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.jnetpcap.Pcap;
import org.jnetpcap.PcapIf;
import org.jnetpcap.packet.PcapPacket;
import org.jnetpcap.packet.PcapPacketHandler;
public class apples {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
List<PcapIf> devices = new ArrayList<PcapIf>();
StringBuilder error = new StringBuilder();
int x = Pcap.findAllDevs(devices, error);
if(x==Pcap.NOT_OK||devices.isEmpty()){
System.err.printf("Can't find any devices, error is %s", error.toString());
return;
}
System.out.println("Network devices found");
PcapIf device = devices.get(0);
int snaplen = 64*1024;
int flags = Pcap.MODE_PROMISCUOUS;
int timeout = 10*1000;
Pcap open = Pcap.openLive(device.getName(), snaplen, flags, timeout, error);
if(open==null){
System.err.printf("Error while opening device for capture:"+error.toString());
return;
}
PcapPacketHandler<String> printSummaryHandler = new PcapPacketHandler<String>(){
public void nextPacket(PcapPacket packet, String user){
Date timestamp = new Date(packet.getCaptureHeader().timestampInMillis());
int caplen = packet.getCaptureHeader().caplen();
int len = packet.getCaptureHeader().wirelen();
System.out.printf("Received packet at %s caplen=%-4d len=%-4d %s\n", timestamp.toString(), caplen, len, user);
}
};
open.loop(10, printSummaryHandler, "Message!" );
open.close();
}
}