1 package com.xxx.xxx.xxx.xxx; 2 3 import java.net.URLDecoder; 4 import java.net.URLEncoder; 5 6 import javax.servlet.http.Cookie; 7 import javax.servlet.http.HttpServletRequest; 8 import javax.servlet.http.HttpServletResponse; 9 10 import org.apache.commons.lang.StringUtils; 11 import org.apache.http.cookie.SetCookie; 12 import org.slf4j.Logger; 13 import org.slf4j.LoggerFactory; 14 import org.springframework.web.bind.annotation.ResponseBody; 15 16 /** 17 * Cookie 工具类 18 * 19 * @author 20 * @date 21 */ 22 public final class CookieUtils { 23 protected static final Logger LOGGER = LoggerFactory 24 .getLogger(CookieUtils.class); 25 26 /** 27 * 获取cookie的值 28 * 29 * @author 30 * @date 31 * @param req 32 * @param res 33 * @param cookieName 34 * @param isDecoder 35 * 是：utf-8编码 否：不编码使用默认的 36 * @return 37 */ 38 public static String getCookieValue(HttpServletRequest req, String cookieName, Boolean isDecoder) { 39 Cookie[] cookieList = req.getCookies(); 40 if (cookieList == null || cookieName == null) { 41 return null; 42 } 43 String retValueString = null; 44 try { 45 for (int i = 0; i < cookieList.length; i++) { 46 if (cookieList[i].getName().equals(cookieName)) { 47 if (isDecoder) { 48 retValueString = URLDecoder.decode( 49 cookieList[i].getValue(), "utf-8"); 50 } else { 51 retValueString = cookieList[i].getValue(); 52 } 53 } 54 } 55 } catch (Exception e) { 56 LOGGER.error("Cookie Decode Error : ", e); 57 } 58 return retValueString; 59 60 } 61 62 /** 63 * 设置cookie 64 * 65 * @author 66 * @date 67 * @param req 68 * @param res 69 * @param cookieName 70 * @param cookieValue 71 * @param cookieMaxAge 72 * 设置cookie最大生存时间 单位秒 73 * @param isDecoder 74 * 是：utf-8编码 否：不编码使用默认的 75 */ 76 public static void setCookie(HttpServletRequest req, 77 HttpServletResponse res, String cookieName, String cookieValue, 78 int cookieMaxAge, Boolean isDecoder) { 79 if (cookieValue == null) { 80 LOGGER.info(cookieName + " 为 null"); 81 return; 82 } 83 try { 84 if (isDecoder) { 85 cookieValue = URLEncoder.encode(cookieValue, "utf-8"); 86 } 87 Cookie cookie = new Cookie(cookieName, cookieValue); 88 if (cookieMaxAge > 0) { 89 cookie.setMaxAge(cookieMaxAge); 90 } 91 if (req != null) { 92 cookie.setDomain(getDomainName(req)); //设置cookie域名 93 } 94 cookie.setPath("/"); 95 res.addCookie(cookie); 96 } catch (Exception e) { 97 LOGGER.error("Cookie Decode Error : ", e); 98 } 99 100 } 101 /** 102 * 删除cookie 103 * @author 104 * @date 105 * @param req 106 * @param res 107 * @param cookieName 108 */ 109 public static void deleteCookie(HttpServletRequest req,HttpServletResponse res,String cookieName){ 110 setCookie(req, res, cookieName, "", 0, false); 111 } 112 113 /** 114 * 获取cookie作用域 115 * @author gaobing 116 * @date 2016年11月23日 上午11:13:37 117 * @param req 118 * @return 119 */ 120 private static final String getDomainName(HttpServletRequest req) { 121 String domainName = ""; 122 String serverName = req.getRequestURL().toString(); 123 124 //String basePath = req.getScheme()+"://"+req.getServerName()+":"+req.getServerPort(); 125 if (StringUtils.isNotBlank(serverName)) { 126 serverName = serverName.toLowerCase().substring(7); 127 final int end = serverName.indexOf("/"); 128 serverName = serverName.substring(0, end); 129 final String[] domains = serverName.split("\.");// \表示转义 130 int len = domains.length; 131 if (len > 3) { 132 // www.xxx.com.cn 133 domainName = "." + domains[len - 3] + "." + domains[len - 2] 134 + "." + domains[len - 1]; 135 } else if (len <= 3 && len > 1) { 136 // xxx.com or xxx.cn 137 domainName = "." + domains[len - 2] + "." + domains[len - 1]; 138 } else { 139 domainName = serverName; 140 } 141 } 142 143 if (domainName != "" && domainName.indexOf(":") > 0) { 144 String[] ary = domainName.split("\:"); 145 domainName = ary[0]; 146 } 147 return domainName; 148 } 149 150 }
注意：删除cookie时 浏览器不会立刻删除，重启后会删除。可根据value 值判断cookie是否被删除
