content: /*
   *
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   */
  
  package org.dinky.utils;
  
  import javax.servlet.http.HttpServletRequest;
  
  /** 获取IP方法 */
  public class IpUtils {
      public static String getIpAddr(HttpServletRequest request) {
          if (request == null) {
              return "unknown";
          }
          String ip = request.getHeader("x-forwarded-for");
          if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
              ip = request.getHeader("Proxy-Client-IP");
          }
          if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
              ip = request.getHeader("X-Forwarded-For");
          }
          if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
              ip = request.getHeader("WL-Proxy-Client-IP");
          }
          if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
              ip = request.getHeader("X-Real-IP");
          }
  
          if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
              ip = request.getRemoteAddr();
          }
          return "0:0:0:0:0:0:0:1".equals(ip) ? "127.0.0.1" : EscapeUtil.clean(ip);
      }
  }
  