基于java配置nginx获取真实IP代码实例

基于java配置nginx获取真实IP代码实例

1、java代码

/** 获取客户端IP */

public static final String getClientIp(HttpServletRequest request) {

String ip = request.getHeader("X-Forwarded-For");

if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)|| "127.0.0.1".equalsIgnoreCase(ip)) {

ip = request.getHeader("Proxy-Client-IP");

}

if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)|| "127.0.0.1".equalsIgnoreCase(ip)) {

ip = request.getHeader("WL-Proxy-Client-IP");

}

if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)|| "127.0.0.1".equalsIgnoreCase(ip)) {

ip = request.getHeader("X-Real-IP");

}

if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)|| "127.0.0.1".equalsIgnoreCase(ip)) {

ip = request.getRemoteAddr();

}

if (StringUtils.isBlank(ip) ||"127.0.0.1".equals(ip)|| ip.indexOf(":") > -1) {

try {

ip = InetAddress.getLocalHost().getHostAddress();

} catch (UnknownHostException e) {

ip = null;

}

}

// 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 (ip != null && ip.length() > 15) {

if (ip.indexOf(",") > 0) {

ip = ip.substring(0, ip.indexOf(","));

}

}

return ip;

}

2、nginx需要进行相应修改,重点 proxy_set_header

server {

listen xxxx;

server_name 127.0.0.1;

# 静态页面目录

root xxxxxxxxxx;

# 默认首页

index login.html;

proxy_set_header Host $http_host;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header REMOTE-HOST $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

add_header Access-Control-Allow-Origin *;

add_header Access-Control-Allow-Methods 'GET,POST';

add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

#proxy_cookie_path /* /*;

client_max_body_size 100m;

location / {

proxy_set_header Host $http_host;

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header REMOTE-HOST $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection "upgrade";

add_header Access-Control-Allow-Origin *;

add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

add_header Access-Cohttp://ntrol-Allow-Methods GET,POST,OPTIONS;

......

}

}

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