java通过请求对象获取ip地址、获取ip地址
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/**
* 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址;
*
* @param request
* @return
* @throws IOException */
public final static String getIpAddress(HttpServletRequest request) throws IOException { // 获取请求主机IP地址,如果通过代理进来，则透过防火墙获取真实IP地址
String ip = request.getHeader("X-Forwarded-For"); if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { 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();
}
} else if (ip.length() > 15) {
String[] ips = ip.split(","); for (int index = 0; index < ips.length; index++) {
String strIp = (String) ips[index]; if (!("unknown".equalsIgnoreCase(strIp))) {
ip = strIp; break;
}
}
} return ip;
}
