摘要：
1.JAVA获取客户端请求的当前网络IP地址：/***获取客户端所请求的当前IP地址：IP*@paramrequest*@return*/publicstaticStringgetIpAddress（HttpServletRequestrequest）｛StringipAddress=request.getHeader（“X-Real-IP”）；//首先从nginx自定义配置获取if（ipAddress==null）
1. JAVA获取客户端请求的当前网络ip地址：
/** * 获取客户端请求的当前网络ip * @param request * @return */ public static String getIpAddr(HttpServletRequest request){ String ipAddress = request.getHeader("X-Real-IP");//先从nginx自定义配置获取 if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) { ipAddress = request.getHeader("x-forwarded-for"); } if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) { ipAddress = request.getHeader("Proxy-Client-IP"); } if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) { ipAddress = request.getHeader("WL-Proxy-Client-IP"); } if(ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) { ipAddress = request.getRemoteAddr(); if(ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")){ //根据网卡取本机配置的IP InetAddress inet=null; try { inet = InetAddress.getLocalHost(); } catch (UnknownHostException e) { e.printStackTrace(); } ipAddress= inet.getHostAddress(); } } //对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割 if(ipAddress!=null && ipAddress.length()>15){ //"***.***.***.***".length() = 15 if(ipAddress.indexOf(",")>0){ ipAddress = ipAddress.substring(0,ipAddress.indexOf(",")); } } return ipAddress; }
2. Nginx反向代理后获取客户端请求的真实IP
在nginx.conf配置文件中，配置：
proxy_set_header X-Real-IP $remote_addr;
例如：
location /服务名称 { proxy_set_header X-Real-IP $remote_addr; proxy_pass http://xaserver/服务名称; client_max_body_size 1000m; }