java 获取IP地址（MAC地址）

关键字：IP（MAC） 地址。


一、Java类直接获取IP、Mac地址：

import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.net.InetAddress;
import java.net.UnknownHostException;


public class Dos {

/**
* @param args
* @throws IOException
* @throws InterruptedException
*/
public static void main(String[] args) throws IOException, InterruptedException {



Dos test =new Dos();

System.out.println(test.getIP());
System.out.println(test.getHostName());


System.out.println("mak="+test.getMACAddressByIp("10.66.81.63"));

}


public String getIP(){
InetAddress inet;
try {
inet = InetAddress.getLocalHost();
InetAddress.getByName("");
return inet.getHostAddress();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
       

return "";
}


public String getHostName(){
InetAddress inet;
try {
inet = InetAddress.getLocalHost();
InetAddress.getByName("");
return inet.getHostName();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
       

return "";
}


//ip必须是真实的ip，如：10.66.204.44，而不能是127.0.0.1或localhsot，否则返回"".可以指定可ping通的所有计算机的IP。
   public String getMACAddressByIp(String ip){
         String str = "";
         String macAddress = "";
         try {
             Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
             InputStreamReader ir = new InputStreamReader(p.getInputStream());
             LineNumberReader input = new LineNumberReader(ir);
             for (int i = 1; i < 100; i++) {
                 str = input.readLine();
                 if (str != null) {
                     if (str.indexOf("MAC Address") > 1) {
                         macAddress = str.substring(str.indexOf("MAC Address") + 14, str.length());
                         break;
                     }
                 }
             }
         } catch (IOException e) {
             e.printStackTrace(System.out);
         }
         return macAddress;
     }




}




/**
* 直接获取mac地址（何伟）
* @return
*/
private static String getMACAddress()
   {
     String address = "";
     String os = System.getProperty("os.name");
     if ((os != null) && (os.startsWith("Windows")))
       try
       {
         String line;
         String command = "cmd.exe /c ipconfig /all";
         Process p = Runtime.getRuntime().exec(command);
         BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));

         while ((line = br.readLine()) != null) {
           if (line.indexOf("Physical Address") > 0) {
             int index = line.indexOf(":");
             index += 2;
             address = line.substring(index);
             break;
           }
         }
         br.close();
         return address.trim();
       } catch (IOException localIOException) {
       }
     return address;
   }








二、web项目获取服务器端IP及客户端IP
String LocalAddr = request.getLocalAddr();//127.0.0.1
String LocalName = request.getLocalName();//localhsot
String test2 = "getRemoteHost="+request.getRemoteHost()+";getRemotePort="+request.getRemotePort()+";getRemoteUser="+request.getRemoteUser()+";getRemoteAddr="+request.getRemoteAddr();
System.out.println(test2);
String RemoteAddr = request.getRemoteAddr();

System.out.println(getRemoteAddress(request));

request.getSession().setAttribute("LocalAddr", LocalAddr);
request.getSession().setAttribute("LocalName", LocalName);
request.getSession().setAttribute("test2", test2);
request.getSession().setAttribute("RemoteAddr", RemoteAddr);
request.getRequestDispatcher("test.jsp").forward(request, response);