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Java Web应用中获取客户端的真实IP地址，尤其在存在代理服务器的情况下。

代码示例：

public static String getClientIP(HttpServletRequest request) {String ip = parseCommaSeparatedIPs(request.getHeader("X-Forwarded-For"));if (isInvalid(ip)) {ip = parseCommaSeparatedIPs(request.getHeader("X-Real-IP"));}if (isInvalid(ip)) {ip = parseCommaSeparatedIPs(request.getHeader("Proxy-Client-IP"));}if (isInvalid(ip)) {ip = parseCommaSeparatedIPs(request.getHeader("WL-Proxy-Client-IP"));}if (isInvalid(ip)) {ip = request.