如何通过IPV6地址捕获异常

Question

这是我的下面的代码，如果任何IPV6地址通过，我想捕获异常。任何想法如何在我的代码中完成？

private static boolean validateAnIpAddress(String ipAddr) { 

    InetAddress address = null; 
    boolean isIPv4; 

     try { 
      address = InetAddress.getByName(ipAddr); 
      isIPv4 = address.getHostAddress().equals(ipAddr) && address instanceof Inet4Address; 
     } catch (UnknownHostException e) { 
      getLogger().log(LogLevel.ERROR, e.getMessage()); 
      //return false; 
      isIPv4 = false; 
     } 

     return isIPv4; 

    } 

Answer 1

try 
{ 
    address = InetAddress.getByName(ipAddr); 

    boolean isIPv6 = address instanceof Inet6Address; 
    if (isIPv6) 
     throw new UnknownHostException("IPv6 Address"); 

    isIPv4 = address.getHostAddress().equals(ipAddr) && address instanceof Inet4Address; 
} 

通过检查address是Inet6Address类型，你可以抛出异常的try块内，因此触发您的catch块。