我使用JSF 2.0创建了Web应用程序。我已将其托管在托管网站上,托管网站的服务器位于美国。
我的客户想要所有访问该网站的用户的详细信息。如何在JSF中找到用户的IP地址?
我试过
try {
InetAddress thisIp = InetAddress.getLocalHost();
System.out.println("My IP is " + thisIp.getLocalHost().getHostAddress());
} catch (Exception e) {
System.out.println("exception in up addresss");
}
然而,这只给我我的网站的IP地址,即服务器IP地址。
有人能告诉我如何获取使用Java访问网站的IP地址吗?
答案 0 :(得分:58)
我继续
HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
String ipAddress = request.getHeader("X-FORWARDED-FOR");
if (ipAddress == null) {
ipAddress = request.getRemoteAddr();
}
System.out.println("ipAddress:" + ipAddress);
答案 1 :(得分:12)
即使X-Forwarded-For
标题中有多个 IP地址,也可以使用已接受答案的改进版本:
/**
* Gets the remote address from a HttpServletRequest object. It prefers the
* `X-Forwarded-For` header, as this is the recommended way to do it (user
* may be behind one or more proxies).
*
* Taken from https://stackoverflow.com/a/38468051/778272
*
* @param request - the request object where to get the remote address from
* @return a string corresponding to the IP address of the remote machine
*/
public static String getRemoteAddress(HttpServletRequest request) {
String ipAddress = request.getHeader("X-FORWARDED-FOR");
if (ipAddress != null) {
// cares only about the first IP if there is a list
ipAddress = ipAddress.replaceFirst(",.*", "");
} else {
ipAddress = request.getRemoteAddr();
}
return ipAddress;
}
答案 2 :(得分:4)
试试这个......
HttpServletRequest httpServletRequest = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
String ip = httpServletRequest.getRemoteAddr();