工具方法获取远程IP

最新推荐文章于 2025-02-24 00:17:24 发布

转载最新推荐文章于 2025-02-24 00:17:24 发布 · 356 阅读

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原文链接：http://www.cnblogs.com/buguge/p/9183682.html

本文提供了一段Java代码，用于从HttpServletRequest请求中获取客户端的真实IP地址。代码依次尝试读取x-forwarded-for、Proxy-Client-IP、WL-Proxy-Client-IP等头部信息，并在这些都不可用的情况下使用request.getRemoteAddr()来获取IP地址。

java-code:

    public String getRemoteIP(HttpServletRequest request) {
        String clientIp = request.getHeader("x-forwarded-for");
        if (clientIp == null || clientIp.length() == 0 || "unknown".equalsIgnoreCase(clientIp)) {
            clientIp = request.getHeader("Proxy-Client-IP");
        }

        if (clientIp == null || clientIp.length() == 0 || "unknown".equalsIgnoreCase(clientIp)) {
            clientIp = request.getHeader("WL-Proxy-Client-IP");
        }

        if (clientIp == null || clientIp.length() == 0 || "unknown".equalsIgnoreCase(clientIp)) {
            clientIp = request.getRemoteAddr();
        }

        return clientIp;
    }