哪位大虾知道在Applet中如何使用InetAddress类来查询IP地址，谢谢。__java_InetAddress_SecurityManager_public_checkPermission_

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哪位大虾知道在Applet中如何使用InetAddress类来查询IP地址，谢谢。

来源: 互联网发布时间：2015-03-25

本文导语: import java.awt.*; import java.applet.*; import java.net.*; public class MyApp extends Applet { InetAddress ipa; public void init() { try { ipa=InetAddress.getByName("xgnsv"); } catch(Unknow...

import java.awt.*;
import java.applet.*;
import java.net.*;

public class MyApp extends Applet
{
   InetAddress ipa;
   public void init()
  {
    try
      {
            ipa=InetAddress.getByName("xgnsv");
      }
      catch(UnknownHostException e)
      {
         System.out.println(e.toString());
     }
   }
         public void paint(Graphics g)
      {
  g.drawString(ipa.getHostName(), 20, 20);
  g.drawString(ipa.toString(), 30, 30);
         }

}
总是出错
java.security.AccessControlException: access denied (java.net.SocketPermission xgnsv resolve)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:272)
at java.security.AccessController.checkPermission(AccessController.java:399)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:545)
at java.lang.SecurityManager.checkConnect(SecurityManager.java:1042)
at java.net.InetAddress.getAllByName0(InetAddress.java:559)
at java.net.InetAddress.getAllByName0(InetAddress.java:540)
at java.net.InetAddress.getByName(InetAddress.java:449)
at MyApp.init(MyApp.java:12)
at sun.applet.AppletPanel.run(AppletPanel.java:344)
at java.lang.Thread.run(Thread.java:484)
Exit code: 0
No Errors

APPLET中不能用!
具体看下面!
import java.net.*;

public class InetAddressTest
{  public static void main(String[] args)
   {  try
      {
         if (args.length > 0)
         {  String host = args[0];
            InetAddress[] addresses
               = InetAddress.getAllByName(host);
            for (int i = 0; i