计算机网络专业课程设计实验报告.doc

中南大学课程设计汇报
课程：计算机网络课程设计
题目：基于Winpcap网络流量统计分析
指导老师：张伟

目录

第一章 总体设计
一、 实体类设计 --------P3
二、 功效类设计 --------P3
三、 界面设计 --------P3
第二章 具体设计
一、 实体类实现 --------P4
二、 功效类实现 --------P4
三、 界面实现 --------P5
第三章 源代码清单及说明
一、CaptureUtil.java --------P7
二、MyPcapPacketHandler.java --------P9
三、PacketMatch.java --------P9
四、Windows.java --------P13
第四章 运行结果 --------P19
第五章 心得体会 --------P21

第一章 总体设计
一、 实体类设计
TCP、UPD、ICMP、ARP、广播数据包五个包数据结构设计
二、 功效类设计
（1） 网卡获取
（2） 包抓捕
（3） 包处理
三、 界面设计
（1） 布局
（2） 按钮功效连接

第二章 第二章 具体设计
一、实体类实现
TCP、UPD、ICMP、ARP、广播数据包五个包数据结构设计。
本程序采取Java编写，基于win10pcap。Win10pcap是winpcap在win10系统上适用版本。Java对于winpcap使用jnetpcap进行支持。对于TCP、UPD、ICMP、ARP、广播数据包五种类型包，在jnetpcapjar包中大部分已经封装好了相关实体类型。对应以下：
ARP 实体类：work.Arp;
UPD 实体类：work.Icmp;
IP 实体类：work.Ip4;
TCP 实体类：org.jnetpcap.protocol.tcpip.Tcp;
UDP 实体类：org.jnetpcap.protocol.tcpip.Udp;
而对于其中广播数据包，其判定我利用捕捉到IP包目标地址进行判定，若其目标地址为255.255.255.255，则认为其为广播数据包。
二、 功效类实现
（1）网卡获取
电脑上包发送和接收全部得经过网卡来进行，所以为了完成局域网数据包捕捉和统计，我首先要做是获取到电脑上网卡列表，然后选择一个网卡进行包捕捉。而相关代码在jnetpcap官网示例代码1中能够找到，从中能够学习到是jnetpcap多种使用方法。
在我电脑上能够捕捉到三个网卡，一个是本机本身物理网卡，另外两个是虚拟机模拟出虚拟网卡。

（2） 包抓捕
Jnetpcap中包抓捕也是有着固定格式，这在官网示例代码中也是能够找到，只要设置好相关参数，就能够进行抓捕
具体方法以下，利用Pcap对象loop方法。就是实例化一个Pcap对象，然后调用其loop方法。第一个参数arg0 代表循环次数，第二个参数就是传入一个PcapPaketHandler或其子类对象，这个对象类型是要由我们自己编写对包处理方法。

（3） 包处理
在这里对捕捉包处理我是编写了一个PcapPacketHandler子类，然后重写了nextPacket()方法。在这个方法里我把捕捉到包看成参数传输个具体处理方法packetMatch.handlePacket(packet)。
packetMatch.handlePacket(packet)方法是由我自己编写。handlePacket是packetMatch一个静态方法，能够直接调用。在这个方法里面，它会把捕捉到包包头和TCP、UPD、ICMP、ARP、广播数据包五种类型包包头进行一一比较，以确定是否抓到了了相对应包。
这儿还用到就是jnetpcap内部一个方法，就是packet.hasHeader(arg0)，经过在arg0传入已在jnetpcap里封装好包类型实例，能够很好判定该包是属于什么包类型，是TCP、UPD、ICMP、ARP还是广播数据包。
然后内部对于多种包信息输出也有很好支持，能够直接使用对应toString方法，就能够输出多种相关信息。
（4） 网络流量统计
对于各个捕捉到包，分别针对多种类型包设计了一个Double变量用于统计其传送过来对应包头大小，并在停止抓包后将统计数据输出在最下方TextArea里面。
三、 界面实现
本程序在设计GUI时使用了Java一个很好插件WindowBuilder。
（1）布局
一开始使用Border Layout布局，安排好各个按钮位置，文本框位置。以后采取Absolute layout，并将窗口大小固定化。
在布局最上方是一个JToolBar实例对象，其中放置有选择网卡、开始抓包、停止抓包、清空统计等四个选项，中间是两个带滚动条多行文本框，左边用于显示捕捉包列表，右边用于显示左边我们选中包具体信息。最下方会在停止抓包按钮生效后输出总抓包情况。

（2） 按钮功效连接
在布局最上方是一个JToolBar实例对象，其中放置有选择网卡、开始抓包、停止抓包、清空统计等四个选项，其中选择网卡功效具体由JComboBox（多文本选择框）上选项决定，这个多文本选择框监听着 网卡获取方法，它会从该方法取得一个网卡列表，然后将其文本输出。
开始抓包方法所对应事件是抓包事件，而且该抓包事件是个并发进程。因为假如不将其设置为并发进程，其会使其它事件一直阻塞，甚至连停止抓包全部做不到。停止抓包事件其实是改变了开始抓包中一个标志位，让其为假。该标志为为真，抓包程序会一直进行，该标志为为假，抓包停止。
下方两个文本框，左边文本框监听是开始抓包这个事件，当这个事件开始，这个事件会向文本框传输捕捉到包列表，然后让其显示。而右边文本框监听是左边文本框我们选中内容对应事件。因为对于我们捕捉到包我进行了编号，当我们在左边文本框选中了一个包以后，左边文本框对应包序号会被右边文本框获取，用于在一个列表中依据序号查找到相对应包具体内容，然后将其输出。
统计功效实现是在每个包具体处理时，在处理包方法类中已经有定义好多个静态变量用于计数，每个包具体处理时，将相对应包类型数量加一即可。还定义了其它变量用于统计流量大小，也是在每个包具体处理时，将相对应包大小加到相对应静态变量上即可。

第三章 源代码清单及说明

CaptureUtil.java
//该类负责网卡列表获取、包捕捉、抓包程序停止
package util;
import java.util.ArrayList;
import javax.swing.JOptionPane;
import org.jnetpcap.Pcap;
import org.jnetpcap.PcapIf;
import entity.Windows;

public class CaptureUtil extends Thread{
private static boolean flag=true;
public static int number=2;
private static StringBuilder errbuf = new StringBuilder(); // 用于存放任何错误信息
//此方法用于获取设备上网卡设施

public static ArrayList CaptureNet(){
CaptureUtil.flag=false;
//下面有部分代码来自jnetpcap官网实例
ArrayList alldevs = new ArrayList(); // 用于存放搜索到网卡
//取得设备列表
int r = Pcap.findAllDevs(alldevs, errbuf);
if (r == Pcap.NOT_OK || alldevs.isEmpty()) {
JOptionPane.showMessageDialog(null,errbuf.toString(),"错误",JOptionPane.ERROR_MESSAGE);
return null;
}
return alldevs;
}

//此方法用于选择网卡并捕捉包
public static void CapturePacket(ArrayList alldevs){
CaptureUtil.flag=true;
PcapIf device = alldevs.get(number);
/*System.out.printf("\nChoosing '%s' on your behalf:\n", device
.getDescription());*/
//打开选中设备
int snaplen = Pcap.DEFAULT_SNAPLEN;// 默认长度为65535
int flags = Pcap.MODE_PROMISCUOUS; // 混杂模式,扑获全部类型包
int timeout = 10 * 1000; // 10 seconds in millis
Pcap pcap = Pcap.openLive(device.getName(), snaplen, flags, timeout, errbuf);
if (pcap == null) {
JOptionPane.showMessageDialog(null,errbuf.toString(),"错误",JOptionPane.ERROR_MESSAGE);
return;
}

PacketMatch packetMatch = PacketMatch.getInstance();
MyPcapPacketHandler myhandler = new MyPcapPacketHandler();
while(CaptureUtil.flag){
pcap.loop(1, myhandler, "/njnetpcap");
}
pcap.close();
}

public void run(){
CaptureUtil.CapturePacket(CaptureUtil.CaptureNet());
}

public static void Sto18、pCapturePacket(){
CaptureUtil.flag=false;
}

public static void ClearPacket(){
PacketMatch.numberOfPacket=0;
PacketMatch.hm.clear();
Windows.lItems.clear();
PacketMatch.numberOfArp=0;
PacketMatch.numberOfTcp=0;
PacketMatch.numberOfUdp=0;
PacketMatch.numberOfIcmp=0;
19、PacketMatch.numberOfWideSpread=0;
}
}
MyPcapPacketHandler.java
//该类是PcapPacketHandler子类，重写了nextPacket方法
package util;

import org.jnetpcap.packet.PcapPacket;
import org.jnetpcap.packet.PcapPacketHandler;

public class MyPcapPacketHandler implements PcapPacketHandler {

20、@Override
public void nextPacket(PcapPacket packet, Object arg1) {
PacketMatch packetMatch = PacketMatch.getInstance();
packetMatch.handlePacket(packet);
}

}

PacketMatch.java
//该类是包处理
package util;

import java.util.HashMap;

import org.jnetpcap.packet.PcapPac21、ket;
import work.Arp;
import work.Icmp;
import work.Ip4;
import org.jnetpcap.protocol.tcpip.Tcp;
import org.jnetpcap.protocol.tcpip.Udp;

import entity.Windows;

public class PacketMatch {
public static HashMap hm=new HashMap();
public static int numberOfPacket=0;
private static Pack22、etMatch pm;
private Icmp icmp = new Icmp();
private Tcp tcp = new Tcp();
private Udp udp = new Udp();
private Arp arp= new Arp();
private Ip4 ip4=new Ip4();
public static double totalOfIcmp=0;
public static double totalOfTcp=0;
public static do23、uble totalOfUdp=0;
public static double totalOfArp=0;
public static double totalOfSpread=0;
public static double totalOfIp=0;
public static int numberOfWideSpread=0;
public static int numberOfUdp=0;
public static int numberOfTcp=0;
public static int numberOf24、Icmp=0;
public static int numberOfArp=0;
public static PacketMatch getInstance() {
if (pm == null) {
pm = new PacketMatch();
}
return pm;
}

public void handlePacket(PcapPacket packet) {
//以下四个包全部已能够正确捕捉
PacketMatch.25、totalOfIp+=packet.getTotalSize()/(1024.0*1024.0);
if (packet.hasHeader(icmp)) {
handleIcmp(packet);
}
if (packet.hasHeader(arp)) {
handleArp(packet);
}
if (packet.hasHeader(tcp)) {
handleTcp(packet);
}
26、 if (packet.hasHeader(udp)) {
handleUdp(packet);
}
//广播数据包捕捉
if (packet.hasHeader(ip4)) {
handleIp4(packet);
/*以下为试验IP地址获取
packet.getHeader(ip4);
System.out.println(ip4.toString());
byte[] destinations27、new byte[4];
ip4.destinationToByteArray(destinations);
byte[] sources=new byte[4];
ip4.sourceToByteArray(sources);
System.out.println("ip4 destination:"+destinations);
System.out.println("ip4 resource:"+sources);
28、System.out.println("ip4 destination:"+ip4.destinationToInt());
System.out.println("ip4 resource:"+ip4.sourceToInt());

System.out.println("ip4 destination:"+PacketMatch.intToIp(ip4.destinationToInt()));
System.out.println("ip4 resource:"+Packet29、Match.intToIp(ip4.sourceToInt()));
*/
}
}

private void handleIp4(PcapPacket packet) {
packet.getHeader(ip4);
if(PacketMatch.intToIp(ip4.destinationToInt()).equals("255.255.255.255")){
//这是一个广播数据包
System.out.println("收到一个广播数据包");
Windows.lItems.a30、dd(numberOfPacket, "广播数据包");
hm.put(numberOfPacket, "这是一个广播数据包!");
numberOfWideSpread++;
totalOfSpread+=ip4.getLength()/1024.0;
numberOfPacket++;
}
}

private void handleUdp(PcapPacket packet) {
packet.getHeader(udp);
System.out.println("udp起源端口"+udp.toString(31、));
hm.put(numberOfPacket, udp.toString());
Windows.lItems.add(numberOfPacket, "udp");
numberOfUdp++;
totalOfUdp+=udp.getLength()/1024.0;
numberOfPacket++;
}

private void handleTcp(PcapPacket packet) {
packet.getHeader(tcp);
System.out.println(tcp.toStr32、ing());
hm.put(numberOfPacket, tcp.toString());
Windows.lItems.add(numberOfPacket, "tcp");
numberOfTcp++;
totalOfTcp+=tcp.getLength()/1024.0;
numberOfPacket++;

}

private void handleIcmp(PcapPacket packet) {
pa33、cket.getHeader(icmp);
System.out.println("icmp:"+icmp.toString());
hm.put(numberOfPacket, icmp.toString());
Windows.lItems.add(numberOfPacket, "icmp");
numberOfIcmp++;
totalOfIcmp+=icmp.getLength()/1024.0;
numberOfPacket++;
}

private void handleArp(PcapPacket packet)34、 {
packet.getHeader(arp);
System.out.println("arp:"+arp.toString());
hm.put(numberOfPacket, arp.toString());
Windows.lItems.add(numberOfPacket, "arp");
numberOfArp++;
totalOfArp+=arp.getLength()/1024.0;
numberOfPacket++;
}

//以下函数将Int类型转化为Ip地址
public sta35、tic String intToIp(int ipInt){
return new StringBuilder().append(((ipInt>>24)&0xff)).append('.').append
((ipInt>>16)&0xff).append('.').append
((ipInt>>8)&0xff).append('.').append
((ipInt&0xff)).toString();
}
}
Windows.java
//该类是GUI界面设计
package entity;

import java.awt.36、Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.ArrayList;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Bor37、derFactory;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javax38、swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

import org.jnetpcap.PcapIf;

import util.CaptureUtil;
import util.PacketMatch;

public class Windows extends JFrame {

private JPane39、l contentPane;
private final Action action = new SwingAction();
private final Action action_1 = new SwingAction_1();
private final Action action_2 = new SwingAction_2();

public static DefaultListModel lItems=new DefaultListModel();
private JList list = new JList(lItems);
private f40、inal Action action_3 = new SwingAction_3();
private JScrollPane jsp1=new JScrollPane(list);

private JTextArea textArea = new JTextArea();
private JScrollPane jsp2=new JScrollPane(textArea);

private JTextArea textArea_1 = new JTextArea();
/**
* Launch the application.
*/
publi41、c static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Windows frame = new Windows();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame.
*/
42、public Windows() {
setTitle("\u6293\u5305");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 692, 477);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
this.setResiza43、ble(false);

JToolBar toolBar = new JToolBar();
toolBar.setBounds(5, 5, 666, 23);
contentPane.add(toolBar);

JButton button = new JButton("\u9009\u62E9\u7F51\u5361");
toolBar.add(button);

final JComboBox comboBox = new JComboBox();
comboBox.addActionListener(new Ac44、tionListener() {
public void actionPerformed(ActionEvent e) {
String net=(String)comboBox.getSelectedItem();
ArrayList alldevs=CaptureUtil.CaptureNet();
int i=0;
System.out.println(net);
for (PcapIf device : alldevs) {
if(net.equals(device.getDescription())45、){
CaptureUtil.number=i;
System.out.println(CaptureUtil.number+":"+device.getDescription());
CaptureUtil.StopCapturePacket();
}
i++;
}
}
});
comboBox.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent arg0) {
}
46、 });
toolBar.add(comboBox);

JButton button_1 = new JButton("\u5F00\u59CB\u6293\u5305");
button_1.setAction(action_1);
toolBar.add(button_1);

JButton button_2 = new JButton("停止抓包");
button_2.setAction(action_2);
button_2.addActionListener(new ActionListener() {
public47、 void actionPerformed(ActionEvent arg0) {
}
});
toolBar.add(button_2);

JButton button_3 = new JButton("\u6E05\u7A7A\u8BB0\u5F55");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
button_3.setAction(action_3);
t48、oolBar.add(button_3);

Border brd=BorderFactory.createMatteBorder(1, 1, 2, 2, Color.black);
list.setBorder(brd);
list.addListSelectionListener(new ListSelectionListener(){
public void valueChanged(ListSelectionEvent arg0) {
// TODO Auto-generated method stub
textArea.se49、tText("");
textArea.append((String)PacketMatch.hm.get(list.getSelectedIndex()));
//以下两行用于检测
// System.out.println(list.getSelectedIndex());
// System.out.println((String)PacketMatch.hm.get(list.getSelectedIndex()));

}
});

jsp1.setBounds(5, 28, 258, 343);
contentPane.add(jsp1);
jsp2.setBounds(263, 28, 408, 343);

contentPane.add(jsp2);
textArea_1.setBounds(5, 371, 666, 67);

var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?6e2a21bc68316db308b5fdc9a0d11f2e";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();

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pCapturePacket(){
CaptureUtil.flag=false;
}

public static void ClearPacket(){
PacketMatch.numberOfPacket=0;
PacketMatch.hm.clear();
Windows.lItems.clear();
PacketMatch.numberOfArp=0;
PacketMatch.numberOfTcp=0;
PacketMatch.numberOfUdp=0;
PacketMatch.numberOfIcmp=0;
PacketMatch.numberOfWideSpread=0;
}
}
MyPcapPacketHandler.java
//该类是PcapPacketHandler子类，重写了nextPacket方法
package util;

import org.jnetpcap.packet.PcapPacket;
import org.jnetpcap.packet.PcapPacketHandler;

public class MyPcapPacketHandler implements PcapPacketHandler {

20、@Override
public void nextPacket(PcapPacket packet, Object arg1) {
PacketMatch packetMatch = PacketMatch.getInstance();
packetMatch.handlePacket(packet);
}

}

PacketMatch.java
//该类是包处理
package util;

import java.util.HashMap;

import org.jnetpcap.packet.PcapPac21、ket;
import work.Arp;
import work.Icmp;
import work.Ip4;
import org.jnetpcap.protocol.tcpip.Tcp;
import org.jnetpcap.protocol.tcpip.Udp;

import entity.Windows;

public class PacketMatch {
public static HashMap hm=new HashMap();
public static int numberOfPacket=0;
private static Pack22、etMatch pm;
private Icmp icmp = new Icmp();
private Tcp tcp = new Tcp();
private Udp udp = new Udp();
private Arp arp= new Arp();
private Ip4 ip4=new Ip4();
public static double totalOfIcmp=0;
public static double totalOfTcp=0;
public static do23、uble totalOfUdp=0;
public static double totalOfArp=0;
public static double totalOfSpread=0;
public static double totalOfIp=0;
public static int numberOfWideSpread=0;
public static int numberOfUdp=0;
public static int numberOfTcp=0;
public static int numberOf24、Icmp=0;
public static int numberOfArp=0;
public static PacketMatch getInstance() {
if (pm == null) {
pm = new PacketMatch();
}
return pm;
}

public void handlePacket(PcapPacket packet) {
//以下四个包全部已能够正确捕捉
PacketMatch.25、totalOfIp+=packet.getTotalSize()/(1024.0*1024.0);
if (packet.hasHeader(icmp)) {
handleIcmp(packet);
}
if (packet.hasHeader(arp)) {
handleArp(packet);
}
if (packet.hasHeader(tcp)) {
handleTcp(packet);
}
26、 if (packet.hasHeader(udp)) {
handleUdp(packet);
}
//广播数据包捕捉
if (packet.hasHeader(ip4)) {
handleIp4(packet);
/*以下为试验IP地址获取
packet.getHeader(ip4);
System.out.println(ip4.toString());
byte[] destinations27、new byte[4];
ip4.destinationToByteArray(destinations);
byte[] sources=new byte[4];
ip4.sourceToByteArray(sources);
System.out.println("ip4 destination:"+destinations);
System.out.println("ip4 resource:"+sources);
28、System.out.println("ip4 destination:"+ip4.destinationToInt());
System.out.println("ip4 resource:"+ip4.sourceToInt());

System.out.println("ip4 destination:"+PacketMatch.intToIp(ip4.destinationToInt()));
System.out.println("ip4 resource:"+Packet29、Match.intToIp(ip4.sourceToInt()));
*/
}
}

private void handleIp4(PcapPacket packet) {
packet.getHeader(ip4);
if(PacketMatch.intToIp(ip4.destinationToInt()).equals("255.255.255.255")){
//这是一个广播数据包
System.out.println("收到一个广播数据包");
Windows.lItems.a30、dd(numberOfPacket, "广播数据包");
hm.put(numberOfPacket, "这是一个广播数据包!");
numberOfWideSpread++;
totalOfSpread+=ip4.getLength()/1024.0;
numberOfPacket++;
}
}

private void handleUdp(PcapPacket packet) {
packet.getHeader(udp);
System.out.println("udp起源端口"+udp.toString(31、));
hm.put(numberOfPacket, udp.toString());
Windows.lItems.add(numberOfPacket, "udp");
numberOfUdp++;
totalOfUdp+=udp.getLength()/1024.0;
numberOfPacket++;
}

private void handleTcp(PcapPacket packet) {
packet.getHeader(tcp);
System.out.println(tcp.toStr32、ing());
hm.put(numberOfPacket, tcp.toString());
Windows.lItems.add(numberOfPacket, "tcp");
numberOfTcp++;
totalOfTcp+=tcp.getLength()/1024.0;
numberOfPacket++;

}

private void handleIcmp(PcapPacket packet) {
pa33、cket.getHeader(icmp);
System.out.println("icmp:"+icmp.toString());
hm.put(numberOfPacket, icmp.toString());
Windows.lItems.add(numberOfPacket, "icmp");
numberOfIcmp++;
totalOfIcmp+=icmp.getLength()/1024.0;
numberOfPacket++;
}

private void handleArp(PcapPacket packet)34、 {
packet.getHeader(arp);
System.out.println("arp:"+arp.toString());
hm.put(numberOfPacket, arp.toString());
Windows.lItems.add(numberOfPacket, "arp");
numberOfArp++;
totalOfArp+=arp.getLength()/1024.0;
numberOfPacket++;
}

//以下函数将Int类型转化为Ip地址
public sta35、tic String intToIp(int ipInt){
return new StringBuilder().append(((ipInt>>24)&0xff)).append('.').append
((ipInt>>16)&0xff).append('.').append
((ipInt>>8)&0xff).append('.').append
((ipInt&0xff)).toString();
}
}
Windows.java
//该类是GUI界面设计
package entity;

import java.awt.36、Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.ArrayList;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Bor37、derFactory;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javax38、swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

import org.jnetpcap.PcapIf;

import util.CaptureUtil;
import util.PacketMatch;

public class Windows extends JFrame {

private JPane39、l contentPane;
private final Action action = new SwingAction();
private final Action action_1 = new SwingAction_1();
private final Action action_2 = new SwingAction_2();

public static DefaultListModel lItems=new DefaultListModel();
private JList list = new JList(lItems);
private f40、inal Action action_3 = new SwingAction_3();
private JScrollPane jsp1=new JScrollPane(list);

private JTextArea textArea = new JTextArea();
private JScrollPane jsp2=new JScrollPane(textArea);

private JTextArea textArea_1 = new JTextArea();
/**
* Launch the application.
*/
publi41、c static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Windows frame = new Windows();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame.
*/
42、public Windows() {
setTitle("\u6293\u5305");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 692, 477);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
this.setResiza43、ble(false);

JToolBar toolBar = new JToolBar();
toolBar.setBounds(5, 5, 666, 23);
contentPane.add(toolBar);

JButton button = new JButton("\u9009\u62E9\u7F51\u5361");
toolBar.add(button);

final JComboBox comboBox = new JComboBox();
comboBox.addActionListener(new Ac44、tionListener() {
public void actionPerformed(ActionEvent e) {
String net=(String)comboBox.getSelectedItem();
ArrayList alldevs=CaptureUtil.CaptureNet();
int i=0;
System.out.println(net);
for (PcapIf device : alldevs) {
if(net.equals(device.getDescription())45、){
CaptureUtil.number=i;
System.out.println(CaptureUtil.number+":"+device.getDescription());
CaptureUtil.StopCapturePacket();
}
i++;
}
}
});
comboBox.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent arg0) {
}
46、 });
toolBar.add(comboBox);

JButton button_1 = new JButton("\u5F00\u59CB\u6293\u5305");
button_1.setAction(action_1);
toolBar.add(button_1);

JButton button_2 = new JButton("停止抓包");
button_2.setAction(action_2);
button_2.addActionListener(new ActionListener() {
public47、 void actionPerformed(ActionEvent arg0) {
}
});
toolBar.add(button_2);

JButton button_3 = new JButton("\u6E05\u7A7A\u8BB0\u5F55");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
button_3.setAction(action_3);
t48、oolBar.add(button_3);

Border brd=BorderFactory.createMatteBorder(1, 1, 2, 2, Color.black);
list.setBorder(brd);
list.addListSelectionListener(new ListSelectionListener(){
public void valueChanged(ListSelectionEvent arg0) {
// TODO Auto-generated method stub
textArea.se49、tText("");
textArea.append((String)PacketMatch.hm.get(list.getSelectedIndex()));
//以下两行用于检测
// System.out.println(list.getSelectedIndex());
// System.out.println((String)PacketMatch.hm.get(list.getSelectedIndex()));

}
});

jsp1.setBounds(5, 28, 258, 343);
contentPane.add(jsp1);
jsp2.setBounds(263, 28, 408, 343);

contentPane.add(jsp2);
textArea_1.setBounds(5, 371, 666, 67);

var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?6e2a21bc68316db308b5fdc9a0d11f2e";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();

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function stopPropagation(e) {
var ev = e || window.event;
if (ev.stopPropagation) {
ev.stopPropagation();
}
else if (window.event) {
window.event.cancelBubble = true;//兼容IE
}
}
$("#navmore").click(function (e) {
$("#navcontent").show();
$("#navlogo").show();
stopPropagation(e);
var navcontentwidth = $("#navcontent").width();
$('#navcontent').css({ 'right': '-' + navcontentwidth + 'px' });
$("#navcontent").show().animate({ "right": 0 }, 300);
});
$(document).bind('click', function () {
var navcontentwidth = $("#navcontent").width();
$("#navcontent").animate({ 'right': '-' + navcontentwidth + 'px' }, 300, function () { $("#navcontent").hide(); });
$("#navlogo").fadeOut(300);
});
$("#navcontent").click(function (e) {
stopPropagation(e);
});
$("#navclose").click(function (e) {
var navcontentwidth = $("#navcontent").width();
$("#navcontent").animate({ 'right': '-' + navcontentwidth + 'px' }, 300, function () { $("#navcontent").hide(); });
$("#navlogo").fadeOut(300);
});

function BaseShare(title, desc, link, imgUrl) {}

首页

分类

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我的

$(document).ready(function () {
var arr = $(".headercontent");
for (var i = 0; i < arr.length; i++) {
(function (index) {
var url = "https://m.zixin.com.cn/header.aspx";
$.get(url + "?tp=0&t=" + (new Date()).valueOf(), function (d) {
try {
arr.eq(index).empty().html(d);
} catch (e) { }
try {
arr.html(d);
} catch (e) { }
});
})(i);
}
});

$("img.lazys").lazyload({
threshold: 200,
effect: "fadeIn"
});

@Override
public void nextPacket(PcapPacket packet, Object arg1) {
PacketMatch packetMatch = PacketMatch.getInstance();
packetMatch.handlePacket(packet);
}

}

PacketMatch.java
//该类是包处理
package util;

import java.util.HashMap;

import org.jnetpcap.packet.PcapPacket;
import work.Arp;
import work.Icmp;
import work.Ip4;
import org.jnetpcap.protocol.tcpip.Tcp;
import org.jnetpcap.protocol.tcpip.Udp;

import entity.Windows;

public class PacketMatch {
public static HashMap hm=new HashMap();
public static int numberOfPacket=0;
private static PacketMatch pm;
private Icmp icmp = new Icmp();
private Tcp tcp = new Tcp();
private Udp udp = new Udp();
private Arp arp= new Arp();
private Ip4 ip4=new Ip4();
public static double totalOfIcmp=0;
public static double totalOfTcp=0;
public static double totalOfUdp=0;
public static double totalOfArp=0;
public static double totalOfSpread=0;
public static double totalOfIp=0;
public static int numberOfWideSpread=0;
public static int numberOfUdp=0;
public static int numberOfTcp=0;
public static int numberOfIcmp=0;
public static int numberOfArp=0;
public static PacketMatch getInstance() {
if (pm == null) {
pm = new PacketMatch();
}
return pm;
}

public void handlePacket(PcapPacket packet) {
//以下四个包全部已能够正确捕捉
PacketMatch.totalOfIp+=packet.getTotalSize()/(1024.0*1024.0);
if (packet.hasHeader(icmp)) {
handleIcmp(packet);
}
if (packet.hasHeader(arp)) {
handleArp(packet);
}
if (packet.hasHeader(tcp)) {
handleTcp(packet);
}
if (packet.hasHeader(udp)) {
handleUdp(packet);
}
//广播数据包捕捉
if (packet.hasHeader(ip4)) {
handleIp4(packet);
/*以下为试验IP地址获取
packet.getHeader(ip4);
System.out.println(ip4.toString());
byte[] destinationsnew byte[4];
ip4.destinationToByteArray(destinations);
byte[] sources=new byte[4];
ip4.sourceToByteArray(sources);
System.out.println("ip4 destination:"+destinations);
System.out.println("ip4 resource:"+sources);
System.out.println("ip4 destination:"+ip4.destinationToInt());
System.out.println("ip4 resource:"+ip4.sourceToInt());

System.out.println("ip4 destination:"+PacketMatch.intToIp(ip4.destinationToInt()));
System.out.println("ip4 resource:"+PacketMatch.intToIp(ip4.sourceToInt()));
*/
}
}

private void handleIp4(PcapPacket packet) {
packet.getHeader(ip4);
if(PacketMatch.intToIp(ip4.destinationToInt()).equals("255.255.255.255")){
//这是一个广播数据包
System.out.println("收到一个广播数据包");
Windows.lItems.add(numberOfPacket, "广播数据包");
hm.put(numberOfPacket, "这是一个广播数据包!");
numberOfWideSpread++;
totalOfSpread+=ip4.getLength()/1024.0;
numberOfPacket++;
}
}

private void handleUdp(PcapPacket packet) {
packet.getHeader(udp);
System.out.println("udp起源端口"+udp.toString());
hm.put(numberOfPacket, udp.toString());
Windows.lItems.add(numberOfPacket, "udp");
numberOfUdp++;
totalOfUdp+=udp.getLength()/1024.0;
numberOfPacket++;
}

private void handleTcp(PcapPacket packet) {
packet.getHeader(tcp);
System.out.println(tcp.toString());
hm.put(numberOfPacket, tcp.toString());
Windows.lItems.add(numberOfPacket, "tcp");
numberOfTcp++;
totalOfTcp+=tcp.getLength()/1024.0;
numberOfPacket++;

}

private void handleIcmp(PcapPacket packet) {
packet.getHeader(icmp);
System.out.println("icmp:"+icmp.toString());
hm.put(numberOfPacket, icmp.toString());
Windows.lItems.add(numberOfPacket, "icmp");
numberOfIcmp++;
totalOfIcmp+=icmp.getLength()/1024.0;
numberOfPacket++;
}

private void handleArp(PcapPacket packet) {
packet.getHeader(arp);
System.out.println("arp:"+arp.toString());
hm.put(numberOfPacket, arp.toString());
Windows.lItems.add(numberOfPacket, "arp");
numberOfArp++;
totalOfArp+=arp.getLength()/1024.0;
numberOfPacket++;
}

//以下函数将Int类型转化为Ip地址
public static String intToIp(int ipInt){
return new StringBuilder().append(((ipInt>>24)&0xff)).append('.').append
((ipInt>>16)&0xff).append('.').append
((ipInt>>8)&0xff).append('.').append
((ipInt&0xff)).toString();
}
}
Windows.java
//该类是GUI界面设计
package entity;

import java.awt.Color;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.ArrayList;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.BorderFactory;
import javax.swing.DefaultListModel;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JToolBar;
import javaxswing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

import org.jnetpcap.PcapIf;

import util.CaptureUtil;
import util.PacketMatch;

public class Windows extends JFrame {

private JPanel contentPane;
private final Action action = new SwingAction();
private final Action action_1 = new SwingAction_1();
private final Action action_2 = new SwingAction_2();

public static DefaultListModel lItems=new DefaultListModel();
private JList list = new JList(lItems);
private final Action action_3 = new SwingAction_3();
private JScrollPane jsp1=new JScrollPane(list);

private JTextArea textArea = new JTextArea();
private JScrollPane jsp2=new JScrollPane(textArea);

private JTextArea textArea_1 = new JTextArea();
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Windows frame = new Windows();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}

/**
* Create the frame.
*/
public Windows() {
setTitle("\u6293\u5305");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 692, 477);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
this.setResizable(false);

JToolBar toolBar = new JToolBar();
toolBar.setBounds(5, 5, 666, 23);
contentPane.add(toolBar);

JButton button = new JButton("\u9009\u62E9\u7F51\u5361");
toolBar.add(button);

final JComboBox comboBox = new JComboBox();
comboBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String net=(String)comboBox.getSelectedItem();
ArrayList alldevs=CaptureUtil.CaptureNet();
int i=0;
System.out.println(net);
for (PcapIf device : alldevs) {
if(net.equals(device.getDescription())){
CaptureUtil.number=i;
System.out.println(CaptureUtil.number+":"+device.getDescription());
CaptureUtil.StopCapturePacket();
}
i++;
}
}
});
comboBox.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent arg0) {
}
});
toolBar.add(comboBox);

JButton button_1 = new JButton("\u5F00\u59CB\u6293\u5305");
button_1.setAction(action_1);
toolBar.add(button_1);

JButton button_2 = new JButton("停止抓包");
button_2.setAction(action_2);
button_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
}
});
toolBar.add(button_2);

JButton button_3 = new JButton("\u6E05\u7A7A\u8BB0\u5F55");
button_3.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
button_3.setAction(action_3);
toolBar.add(button_3);

Border brd=BorderFactory.createMatteBorder(1, 1, 2, 2, Color.black);
list.setBorder(brd);
list.addListSelectionListener(new ListSelectionListener(){
public void valueChanged(ListSelectionEvent arg0) {
// TODO Auto-generated method stub
textArea.setText("");
textArea.append((String)PacketMatch.hm.get(list.getSelectedIndex()));
//以下两行用于检测
// System.out.println(list.getSelectedIndex());
// System.out.println((String)PacketMatch.hm.get(list.getSelectedIndex()));

}
});

jsp1.setBounds(5, 28, 258, 343);
contentPane.add(jsp1);
jsp2.setBounds(263, 28, 408, 343);

contentPane.add(jsp2);
textArea_1.setBounds(5, 371, 666, 67);

关于我们      便捷服务       自信AI       AI导航        抽奖活动©2010-2026 宁波自信网络信息技术有限公司  版权所有客服电话：[phone]  投诉电话：[phone]浙公网安备33021202000488号   浙ICP备2021020529号-1  |  浙B2-20240490  关注我们 ：