掃描500個IP10秒鐘左右, 一個IP等待0.3秒
說來慚愧, 我覺得是用java寫的過程編程, 少貼一點僅供參考:
package steeven;
import java.sql.*;
import java.io.*;
import java.util.*;
import java.text.*;
import javax.servlet.http.*;
public class Ip extends Common implements Runnable{
public String ip; // IP, 用戶名, 主機名
ResultSet list; // 分頁顯示的記錄集
public Ip cur; // 分頁顯示的當前記錄
static public Hashtable ping = new Hashtable(); //ping 後的結果集
static int threadCount = 0; //當前線程的數量, 防止過多線程摧毀電腦
public Ip() {}
public Ip(String ip){
this.ip=ip;
Thread r = new Thread(this);
r.start();
}
public static void Ping(String ip) throws Exception{
//最多30個線程
while(threadCount>30)
Thread.sleep(50);
threadCount +=1;
Ip p = new Ip(ip);
}
public void PingAll() throws Exception{
threadCount =0;
ping = new Hashtable();
while(next()) //next()對所有局域網Ip放到cur
Ping(cur.ip);
//等著所有Ping結束
while(threadCount>0)
Thread.sleep(50);
}
public void run(){
try{
Process p= Runtime.getRuntime().exec ("ping "+ip+ " -w 300 -n 1");
InputStreamReader ir = new InputStreamReader(p.getInputStream());
LineNumberReader input = new LineNumberReader (ir);
//讀取結果行
for (int i=1 ; i<7; i++)
input.readLine();
String line= input.readLine();
if (line.length()<17 || line.substring(8,17).equals("timed out"))
ping.put(ip,new Boolean(false));
else
ping.put(ip,new Boolean(true));
//線程結束
threadCount -= 1;
}catch (IOException e){}
}
public static void main(String[] args) throws Exception{
Ip ip= new Ip();
ip.PingAll();
java.util.Enumeration key = ping.keys();
String k;
while((k = (String)key.nextElement()) != null)
System.out.println(k+": "+ping.get(k));
}
}
1. 利用Ping比較愚蠢, 但是相對簡單些
2. 如果Ping 成功後, 用nbtstat還可以得到主機名, 當前用戶名, MAC地址...一切盡在掌握中 :)
