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nginx做反向代理負載均衡 Java怎麽獲取後端服務器獲取用戶IP

/**

* 獲取當前網絡ip

* @param request

* @return

*/

public String getIpAddr(HttpServletRequest request){

String 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")){

//根據網卡取本機配置的IP

InetAddress inet=null;

try {

inet = InetAddress.getLocalHost();

} catch (UnknownHostException e) {

e.printStackTrace();

}

ipAddress= inet.getHostAddress();

}

}

//對於通過多個代理的情況,第壹個IP為客戶端真實IP,多個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;

}

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