Java 恠HttpServletRequest请求获厠枠务器的IP地址

java

  以ຠ总结了两种根据HttpServletRequest请求获取发出请求浏览器客户端所在服务器的IP地址方法:

代码:

import javax.servlet.http.HttpServletRequest;

/**

* 根据HttpServletRequest请求获取发出请求浏览器客户端所在服务器的IP地址

* @author 【】

*

*/

public class IPUtil {

/*

* ,䟥礋方法

*/

public String getIpAddr(HttpServletRequest request) {

String ip = request.getHeader("x-forwarded-for");

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

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

}

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

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

}

if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {

ip = request.getRemoteAddr();

}

return ip;

}

/*

* 第二种方法

*/

public String getIP(HttpServletRequest request) {

String remoteAddr = request.getRemoteAddr();

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

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

String ip = null;

if (realIp == null) {

if (forwarded == null) {

ip = remoteAddr;

} else {

ip = remoteAddr + "/" + forwarded.split(",")[0];

}

} else {

if (realIp.equals(forwarded)) {

ip = realIp;

} else {

if(forwarded != null){

forwarded = forwarded.split(",")[0];

}

ip = realIp + "/" + forwarded;

}

}

return ip;

}

}

   注:如果在本机访问服务时(服务器和客户端都在同一台电脑上,例如用localhost访问的时候就会出现),获取的IP值会 

0:0:0:0:0:0:0:1”,这是IPV6ڄIP。如果本机通过localhost、127.0.0.1和本机真实地址访问时获取到的ip也有区别,把localhost换成127.0.0.1或本机真实地址就变成了IPV4,即所需的IP地址。

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