在Java中保存和讀取PCAP文件,可以使用第三方庫:pcap4j
<dependency>
<groupId>org.pcap4j</groupId>
<artifactId>pcap4j-core</artifactId>
<version>1.8.2</version>
</dependency>
<dependency>
<groupId>org.pcap4j</groupId>
<artifactId>pcap4j-packetfactory-static</artifactId>
<version>1.8.2</version>
</dependency>
</dependencies>
import org.pcap4j.core.*;
import org.pcap4j.packet.*;
import org.pcap4j.packet.namednumber.*;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
public class PcapSaver {
public static void main(String[] args) throws PcapNativeException, NotOpenException, IOException, TimeoutException {
// 獲取網(wǎng)絡(luò)設(shè)備
PcapNetworkInterface nif = Pcaps.getDevByName("your_network_interface_name");
// 打開網(wǎng)絡(luò)設(shè)備
int snapshotLength = 65536; // 捕獲數(shù)據(jù)包的最大長度
int readTimeout = 50; // 讀取超時時間(毫秒)
boolean promiscuousMode = true; // 是否開啟混雜模式
PcapHandle handle = nif.openLive(snapshotLength, promiscuousMode, readTimeout);
// 創(chuàng)建一個PcapDumper對象,用于保存捕獲到的數(shù)據(jù)包
String pcapFilePath = "output.pcap";
PcapDumper dumper = handle.dumpOpen(pcapFilePath);
// 捕獲數(shù)據(jù)包并保存到PCAP文件
while (true) {
Packet packet = handle.getNextPacket();
if (packet != null) {
dumper.dump(packet);
}
}
}
}
import org.pcap4j.core.*;
import org.pcap4j.packet.*;
import java.io.EOFException;
import java.io.IOException;
public class PcapReader {
public static void main(String[] args) throws PcapNativeException, IOException, EOFException {
// 指定PCAP文件路徑
String pcapFilePath = "input.pcap";
// 打開PCAP文件
PcapHandle handle = Pcaps.openOffline(pcapFilePath);
// 讀取并處理每個數(shù)據(jù)包
while (true) {
Packet packet = handle.getNextPacket();
if (packet == null) {
break;
}
// 處理數(shù)據(jù)包,例如打印數(shù)據(jù)包信息
System.out.println(packet);
}
// 關(guān)閉句柄
handle.close();
}
}
這樣,你就可以使用Java和pcap4j庫來保存和讀取PCAP文件了。注意替換示例代碼中的"your_network_interface_name"為實際的網(wǎng)絡(luò)接口名稱。