org.swiftboot.web.util.HttpServletUtils Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of swiftboot-web Show documentation

Basic module for enterprise web applications

There is a newer version: 2.4.7

package org.swiftboot.web.util;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;

/**
 * HttpServlet 工具类
 *
 * @author swiftech
 **/
public class HttpServletUtils {

    /**
     * 通过 Http Servlet Request 对象获取 Web 应用的 Context Path
     *
     * @param request
     * @param path
     * @return
     */
    public static String makeContextPath(HttpServletRequest request, String path) {
        return request.getContextPath() + "/" + path;
    }

    /**
     * 尝试获取请求客户端中的IP，如果存在反向代理，会尽可能从请求头中获取真实IP。
     * 支持：带有 x-forwarded-for 或者 Proxy-Client-IP 或者 WL-Proxy-Client-IP 头的反向代理
     *
     * @param request
     * @return
     */
    public static String getClientIp(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for"); // Reversed Proxy

        if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        if (StringUtils.isNotBlank(ip)) {
            ip = StringUtils.substringBefore(ip, ",").trim();
        }
        return ip;
    }
}