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          1. 获取用户真实 IP 方法

            一、获取用户ip

            接入 CDN 后,为了方便获取客户端真实 IP,VeryCloud 贴心设计,在请求的?#20998;?#28155;加 Cdn-Real-Ip 字段。

            例:Cdn-Real-Ip: 58.214.233.214

            需要注意的是这些代码是在您切换 CDN 后生效,如未使用 CDN 服务,这些代码是无法获得用户 IP 的。

            下面是读取 Cdn-Real-ip 代码片段:

                   php:

                              <?php                                                                   

                              $user_IP = ($_SERVER["HTTP_CDN_REAL_IP"]);                              

                              echo $user_IP;                                                          

                              ?>                                                                      

                   Java:

                              String srcIp = request.getHeader("Cdn-Real-Ip");                        

                                   if(srcIp == null){                                                 

                                     srcIp = request.getRemoteAddr();                                 

                                   }                                                                  

                   [注]request 是 HttpServletRequest 类型的?#38382;?无论是直接写 serverlet 还是用 struts 都会传入该?#38382;?

                   Asp(用 C#):

                              String srcIp = Request.Headers["Cdn-Real-Ip"];                          

                              if(srcIp == null){                                                      

                                             srcIp = Request.UserHostAddress;                         

                                       }                                                              

                   ASP:

                              <% Request.ServerVariables("HTTP_Cdn-Real-Ip") %>                       

             


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