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当前页面: 开发资料首页J2SE 专题我自己写的java端口扫描程序 ,有两个错误 不知道怎么改了 大家给帮忙吧 谢谢

我自己写的java端口扫描程序 ,有两个错误 不知道怎么改了 大家给帮忙吧 谢谢

摘要: 我自己写的java端口扫描程序 ,有两个错误 不知道怎么改了 大家给帮忙吧 谢谢


import java.io.*;
import java.net.*;

public class scanner
{
public static void main (String[] args)
{
MoreThread threadobj=new MoreThread();
System.out.println("Scanning……");
for(int i=1;i<=5000;i++)
{
new MoreThread(threadobj,"i").start();
}


}
}
class MoreThread implements Runnable
{
String host;
int port;
Socket MoreThread=null;
DataOutputStream os=null;
DataInputStream is=null;
MoreThread(String host, int port)
{
this.host=host;
this.port=port;
}

public void run()
{
try
{
for(int i=1;i<=65535;i++)
{
MoreThread=new Socket("127.0.0.1",i);
os=new DataOutputStream(MoreThread.getOutputStream());
is=new DataInputStream(MoreThread.getInputStream());
}

}
/*catch(UnknownHostException)
{
System.err.println("Don not know about 127.0.0.1");
}*/
catch(IOException e)
{
System.err.println("could not get I/O for the connection to:127.0.0.1");
}

if(MoreThread!=null&&os!=null&&is!=null)
{
Socket s = new Socket(host,port);
System.out.println("The port " + port + " is opened at " + host);
os.close();
is.close();
MoreThread.close();
}
}

}


提示说 8 12行找不到符号


//给你一个.我以前写的
import java.io.*;
import java.net.*;
class scan extends Thread
{
static int port=1;
public static void main(String args[]) throws Exception
{
String host="127.0.0.1";
int num=100;
try{
if(args[0]!=null)host=args[0];
if(args[1]!=null)num=Integer.parseInt(args[1]);
}catch(Exception e){}
System.out.print("扫描"+host+"从端口1到"+num+"开始");
if(num<=0)num=100;
new everyrun(num);
for(;port<=num;port++)
{
new every(host,port).start();
while(every.num>50&&port<=num)sleep(10);
}//while
System.exit(0);
}//main
}//class
class every extends Thread
{
static int num=0;
String host;int port;
every(String nh,int np)
{host=nh;port=np;num++;}
public void run()
{
try{
Socket ss=new Socket(host,port);
System.out.println("/r....../t端口:"+port+"开放");
ss.close();
num--;
}catch(Exception e){num--;}
}
}
class everyrun extends Thread
{
int num;
public everyrun(int num)
{this.num=num;start();}
public void run()
{
System.out.println();
try{
while(scan.port<=num)
{
System.out.print("...");sleep(500);
System.out.print("/b /b");sleep(500);
System.out.print("/b /b");sleep(500);
System.out.print("/b /b");sleep(500);
System.out.print(".");sleep(500);
System.out.print(".");sleep(500);
System.out.print("/b/b");
}
}catch(Exception e){}
}
}


//你的改了一下!
import java.io.*;
import java.net.*;

public class scanner
{
public static void main (String[] args)
{
System.out.println("Scanning……");
for(int i=1;i<=5000;i++)
{
new MoreThread("www.163.com",i).start();
}


}
}
class MoreThread implements Runnable
{
Thread own;
String host;
int port;
Socket MoreThread=null;
DataOutputStream os=null;
DataInputStream is=null;
MoreThread(String host, int port)
{
own=new Thread(this);
this.host=host;
this.port=port;
}
public void start()
{own.start();}

public void run()
{
try
{
MoreThread=new Socket(host,port);
System.out.println("端口:"+port+"开放");
}
catch(Exception e)
{
}

if(MoreThread!=null&&os!=null&&is!=null)
{
try{
Socket s = new Socket(host,port);
System.out.println("The port " + port + " is opened at " + host);
os.close();
is.close();
MoreThread.close();
}catch(Exception e){System.out.println("关闭失败");}
}
}

}


谢谢!!


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