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怎么样扫描计算机系统本地和远程的端口，监测其是打开还是关闭的在很多应用程序中都要用到，下面是用java实现的简朴的端口扫描程序。 Source Code： -------------------------------------------------------------------------------- /* * Created on 2005-3-22 * * TODO To change the template for this generated file go to * Window - Preferences - Java - Code Style - Code Templates */ /** * @author whandey connect to me: whandey@163.com * * TODO To change the template for this generated type comment go to * Window - Preferences - Java - Code Style - Code Templates */ import java.io.*; import java.net.*; import java.util.*; public class SocketPort { public static void main(String[] args) { String ip = "159.162.39.27"; String hostname = new String(); try{ //get the target ip address and hostname InetAddress address = InetAddress.getByName(ip); System.out.println(address); hostname = address.getHostName(); System.out.println(hostname); } catch(UnknownHostException e) { System.out.println("Could not find "+ ip); } try { // creat the output file PrintWriter fout = new PrintWriter( new FileWriter("PortInf.txt")); fout.println("Information Of The Port On the " + hostname +"computer "); fout.println(); // do ports scan for(int nport = 25;nport < 30;++nport) { try { Socket s = new Socket(hostname,nport); fout.println("The port " + nport + " is open!"); fout.println("Connected to "+ s.getInetAddress() + " on port " + s.getPort() + " from port "+ s.getLocalPort() + " of " + s.getLocalAddress()); //print the connected socket information } catch(IOException e) { fout.println("The port " + nport + " is closed!"); } } fout.close(); } catch(IOException e){} } } 返回类别: 教程 上一教程: Imagemagick备忘 下一教程: Web开发中防止浏览器的刷新键引起系统操作重复提交 您可以阅读与"端口扫描程序java实现"相关的教程: · 用java小程序applet实现无限级树结构 · 在JAVA应用程序中如何实现FTP的功能 (转) · 在JAVA应用程序中如何实现FTP的功能 · Java中用Servlet容器实现程序监听 · java程序的递归算法，列出某个目录下的所有子目录和文件 |
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