42 lines
938 B
Java
42 lines
938 B
Java
package com.monkeyk.sos.web;
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import org.apache.commons.lang.StringUtils;
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import javax.servlet.http.HttpServletRequest;
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/**
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* @author Shengzhao Li
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*/
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public abstract class WebUtils {
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//private
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private WebUtils() {
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}
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/**
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* Retrieve client ip address
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*
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* @param request HttpServletRequest
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* @return IP
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*/
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public static String retrieveClientIp(HttpServletRequest request) {
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String ip = request.getHeader("x-forwarded-for");
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if (isUnAvailableIp(ip)) {
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ip = request.getHeader("Proxy-Client-IP");
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}
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if (isUnAvailableIp(ip)) {
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ip = request.getHeader("WL-Proxy-Client-IP");
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}
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if (isUnAvailableIp(ip)) {
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ip = request.getRemoteAddr();
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}
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return ip;
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}
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private static boolean isUnAvailableIp(String ip) {
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return (StringUtils.isEmpty(ip) || "unknown".equalsIgnoreCase(ip));
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}
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} |