获取ip地址

来源：互联网发布：运载火箭模拟软件编辑：程序博客网时间：2024/06/06 00:41

public abstract class PassportUtils
{
   public static String getRemoteAddr(HttpServletRequest request)
   {
       String remoteAddr = request.getHeader("x-forwarded-for");

       if (remoteAddr == null
               || "".equals(remoteAddr)
               || "unknown".equalsIgnoreCase(remoteAddr))
       {
           remoteAddr = request.getHeader("Proxy-Client-IP");
       }

       if (remoteAddr == null
               || "".equals(remoteAddr)
               || "unknown".equalsIgnoreCase(remoteAddr))
       {
           remoteAddr = request.getHeader("WL-Proxy-Client-IP");
       }

       if (remoteAddr == null
               || "".equals(remoteAddr)
               || "unknown".equalsIgnoreCase(remoteAddr))
       {
           remoteAddr = request.getRemoteAddr();
       }

       if (remoteAddr != null && !"".equals(remoteAddr))
       {
           int index = remoteAddr.indexOf(",");

           if (index != -1)
           {
               remoteAddr = remoteAddr.substring(0, index);
           }
       }

       return remoteAddr;
   }
}

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