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;
}