RequestUtils

package com.common.web.util;import java.net.InetAddress;import java.net.UnknownHostException;import javax.servlet.http.HttpServletRequest;import org.apache.commons.lang3.StringUtils;import org.springframework.web.util.UriComponentsBuilder;import org.springframework.web.util.WebUtils;/** * HttpServletRequest帮助类 */public class RequestUtils {public static boolean isAjaxRequest(HttpServletRequest request) {String requestedWith = request.getHeader("x-requested-with");if (StringUtils.isEmpty(requestedWith)) {return false;} else if (StringUtils.isNotEmpty(requestedWith) && requestedWith.equals("XMLHttpRequest")) {return true;}return false;}/** * * 获取请求的URI参数字符串* @param request* @return eg:a=1&b=2* */public static String getQueryParm(HttpServletRequest request){boolean hasPassword = WebUtils.hasSubmitParameter(request, "password");UriComponentsBuilder uriComponentsBuilder = UriComponentsBuilder.fromUriString(request.getRequestURI()).query(request.getQueryString());if(hasPassword){uriComponentsBuilder.replaceQueryParam("password", "********");}return uriComponentsBuilder.toUriString();}/** * 获取访问者IP *  * 在一般情况下使用Request.getRemoteAddr()即可，但是经过nginx等反向代理软件后，这个方法会失效。 *  * 本方法先从Header中获取X-Real-IP，如果不存在再从X-Forwarded-For获得第一个IP(用,分割)， * 如果还不存在则调用Request .getRemoteAddr()。 *  * @param request * @return */public static String getIpAddr(HttpServletRequest request) {String ip = request.getHeader("X-Forwarded-For");if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("X-Real-IP");}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.getHeader("HTTP_CLIENT_IP");}if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {ip = request.getHeader("HTTP_X_FORWARDED_FOR");}if (StringUtils.isBlank(ip) || "unknown".equalsIgnoreCase(ip)) {ip = request.getRemoteAddr();}if (StringUtils.isNotBlank(ip) && !"unknown".equalsIgnoreCase(ip)&& StringUtils.contains(ip, ",")) {// 多次反向代理后会有多个IP值，第一个为真实IP。ip = StringUtils.substringBefore(ip, ",");}// 处理localhost访问if (StringUtils.isBlank(ip) || "unkown".equalsIgnoreCase(ip)|| StringUtils.split(ip, ".").length != 4) {try {InetAddress inetAddress = InetAddress.getLocalHost();ip = inetAddress.getHostAddress();} catch (UnknownHostException e) {e.printStackTrace();}}return ip;}//获取请求的域名public static String getDomain(HttpServletRequest request){String contextPath = request.getContextPath();if (StringUtils.isNotEmpty(contextPath)) {return contextPath;} else {if (request.getServerPort() == 80 || request.getServerPort() == 443) {return request.getScheme() + "://" + request.getServerName() + request.getContextPath();} else {return request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + request.getContextPath();}}}}