获取ip地址

weixin_30715523

于 2019-05-08 17:30:00 发布

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/clfonly1/p/10833245.html

博客给出了一段Java代码，定义了一个静态方法getIpAddress，用于从HttpServletRequest对象中获取客户端IP地址。该方法依次从多个请求头中尝试获取IP，若均失败则使用getRemoteAddr方法获取。

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public static String getIpAddress(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.getHeader("HTTP_CLIENT_IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
}
return ip;