cookie工具类

package cn.ffcs.cookie.common;import javax.servlet.http.Cookie;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.lang.StringUtils;import org.springframework.util.Assert;import com.ffcs.auth.platform.spring.util.AESEncoder;import com.ffcs.auth.platform.spring.util.Base64;import com.ffcs.auth.platform.spring.util.RSAEncoder;/** * Cookie 辅助类 *  */public class CookieUtils {/*** 获得cookie* * @param request*            HttpServletRequest* @param name*            cookie name* @return if exist return cookie, else return null.*/public static Cookie getCookie(HttpServletRequest request, String name) {Cookie[] cookies = request.getCookies();if(cookies == null)return null;for (Cookie c : cookies) {if (c.getName().equalsIgnoreCase(name)) {return c;}}return null;}/*** 获取COOKIE* * @param name*/public static String getCookieValue(HttpServletRequest request, String name) {Cookie[] cookies = request.getCookies();if(cookies == null)return null;for (Cookie ck : cookies) {if (StringUtils.equalsIgnoreCase(name,ck.getName())) return ck.getValue();}return null;}/*** 设置COOKIE* * @param name* @param value* @param maxAge*/public static void addCookie(HttpServletRequest request, HttpServletResponse response, String name,String value, int maxAge) {addCookie(request,response,name,value,maxAge,true);}/*** 根据部署路径，将cookie保存在根目录。* * @param request* @param response* @param name* @param value* @param all_sub_domain* @return*/public static Cookie addCookie(HttpServletRequest request,HttpServletResponse response, String name, String value,int maxAge, boolean all_sub_domain) {Cookie cookie = new Cookie(name, value);cookie.setMaxAge(maxAge);if(all_sub_domain){String serverName = request.getServerName();if(isIPAddr(serverName)){cookie.setDomain(serverName);}else{String domain = getDomainOfServerName(serverName);if(domain!=null){if(domain.indexOf('.')!=-1){cookie.setDomain('.' + domain);}}}}cookie.setPath("/");response.addCookie(cookie);return cookie;}/*** 取消cookie* * @param response* @param name* @param domain*/public static void cancleCookie(HttpServletResponse response, String name,String domain) {Cookie cookie = new Cookie(name, null);cookie.setMaxAge(0);cookie.setPath("/");if (!StringUtils.isBlank(domain)) {cookie.setDomain(domain);}response.addCookie(cookie);}/*** 判断字符串是否是一个IP地址* @param addr* @return*/public static boolean isIPAddr(String addr){if(StringUtils.isEmpty(addr))return false;String[] ips = StringUtils.split(addr, '.');if(ips.length != 4)return false;try{int ipa = Integer.parseInt(ips[0]);int ipb = Integer.parseInt(ips[1]);int ipc = Integer.parseInt(ips[2]);int ipd = Integer.parseInt(ips[3]);return ipa >= 0 && ipa <= 255 && ipb >= 0 && ipb <= 255 && ipc >= 0&& ipc <= 255 && ipd >= 0 && ipd <= 255;}catch(Exception e){}return false;}/*** 获取用户访问URL中的根域名，用于cookie；* 默认情况下，IE和Chrome内核的浏览器会认为http://localhost为无效的域名，所以不会保存它的cookie，使用127.0.0.1访问就可以解决。* 例如: china.herostart.com -> herostart.com* @param req* @return*/public static String getDomainOfServerName(String serverName){if(isIPAddr(serverName)) return null;String[] names = StringUtils.split(serverName, '.');int len = names.length;if(len==1) return null;if(len==3){return makeup(names[len-2],names[len-1]);}if(len>3){String dp = names[len-2];if(dp.equalsIgnoreCase("com")||dp.equalsIgnoreCase("gov")||dp.equalsIgnoreCase("net")||dp.equalsIgnoreCase("edu")||dp.equalsIgnoreCase("org"))return makeup(names[len-3],names[len-2],names[len-1]);elsereturn makeup(names[len-2],names[len-1]);}return serverName;}/*** 使用点号拼接字符* @param ps* @return*/private static String makeup(String...ps){StringBuilder s = new StringBuilder();for(int idx = 0; idx < ps.length; idx++){if(idx > 0)s.append('.');s.append(ps[idx]);}return s.toString();}}