java cookie 工具类 

  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

 

 

posted @ 2016-11-23 19:10  未来--  阅读(1069)  评论(0)  编辑  收藏  举报