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  • Java Springboot Cookie 工具类 开箱即用

    代码如下:

    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    import javax.servlet.http.Cookie;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.UnsupportedEncodingException;
    import java.net.URLDecoder;
    import java.net.URLEncoder;
    
    
    /**
     * 
     * @Title: CookieUtils.java
     * @Description: Cookie 工具类
     * @version V1.0
     */
    public final class CookieUtils {
    
        final static Logger logger = LoggerFactory.getLogger(CookieUtils.class);
    	
    	/**
    	 * 
    	 * @Description: 得到Cookie的值, 不编码
    	 * @param request
    	 * @param cookieName
    	 * @return
    	 */
        public static String getCookieValue(HttpServletRequest request, String cookieName) {
            return getCookieValue(request, cookieName, false);
        }
        
        /**
         * 
         * @Description: 得到Cookie的值
         * @param request
         * @param cookieName
         * @param isDecoder
         * @return
         */
        public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) {
            Cookie[] cookieList = request.getCookies();
            if (cookieList == null || cookieName == null) {
                return null;
            }
            String retValue = null;
            try {
                for (int i = 0; i < cookieList.length; i++) {
                    if (cookieList[i].getName().equals(cookieName)) {
                        if (isDecoder) {
                            retValue = URLDecoder.decode(cookieList[i].getValue(), "UTF-8");
                        } else {
                            retValue = cookieList[i].getValue();
                        }
                        break;
                    }
                }
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            return retValue;
        }
    
        /**
         * 
         * @Description: 得到Cookie的值
         * @param request
         * @param cookieName
         * @param encodeString
         * @return
         */
        public static String getCookieValue(HttpServletRequest request, String cookieName, String encodeString) {
            Cookie[] cookieList = request.getCookies();
            if (cookieList == null || cookieName == null) {
                return null;
            }
            String retValue = null;
            try {
                for (int i = 0; i < cookieList.length; i++) {
                    if (cookieList[i].getName().equals(cookieName)) {
                        retValue = URLDecoder.decode(cookieList[i].getValue(), encodeString);
                        break;
                    }
                }
            } catch (UnsupportedEncodingException e) {
            	 e.printStackTrace();
            }
            return retValue;
        }
    
        /**
         * 
         * @Description: 设置Cookie的值 不设置生效时间默认浏览器关闭即失效,也不编码
         * @param request
         * @param response
         * @param cookieName
         * @param cookieValue
         */
        public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
                String cookieValue) {
            setCookie(request, response, cookieName, cookieValue, -1);
        }
    
        /**
         * 
         * @Description: 设置Cookie的值 在指定时间内生效,但不编码
         * @param request
         * @param response
         * @param cookieName
         * @param cookieValue
         * @param cookieMaxage
         */
        public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
                String cookieValue, int cookieMaxage) {
            setCookie(request, response, cookieName, cookieValue, cookieMaxage, false);
        }
    
        /**
         * 
         * @Description: 设置Cookie的值 不设置生效时间,但编码
         * 在服务器被创建,返回给客户端,并且保存客户端
         * 如果设置了SETMAXAGE(int seconds),会把cookie保存在客户端的硬盘中
         * 如果没有设置,会默认把cookie保存在浏览器的内存中
         * 一旦设置setPath():只能通过设置的路径才能获取到当前的cookie信息
         * @param request
         * @param response
         * @param cookieName
         * @param cookieValue
         * @param isEncode
         */
        public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
                String cookieValue, boolean isEncode) {
            setCookie(request, response, cookieName, cookieValue, -1, isEncode);
        }
    
       /**
        * 
        * @Description: 设置Cookie的值 在指定时间内生效, 编码参数
        * @param request
        * @param response
        * @param cookieName
        * @param cookieValue
        * @param cookieMaxage
        * @param isEncode
        */
        public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
                String cookieValue, int cookieMaxage, boolean isEncode) {
            doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, isEncode);
        }
    
        /**
         * 
         * @Description: 设置Cookie的值 在指定时间内生效, 编码参数(指定编码)
         * @param request
         * @param response
         * @param cookieName
         * @param cookieValue
         * @param cookieMaxage
         * @param encodeString
         */
        public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
                String cookieValue, int cookieMaxage, String encodeString) {
            doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, encodeString);
        }
    
        /**
         * 
         * @Description: 删除Cookie带cookie域名
         * @param request
         * @param response
         * @param cookieName
         */
        public static void deleteCookie(HttpServletRequest request, HttpServletResponse response,
                String cookieName) {
            doSetCookie(request, response, cookieName, null, -1, false);
    //        doSetCookie(request, response, cookieName, "", -1, false);
        }
    
        
        /**
         * 
         * @Description: 设置Cookie的值,并使其在指定时间内生效
         * @param request
         * @param response
         * @param cookieName
         * @param cookieValue
         * @param cookieMaxage	cookie生效的最大秒数
         * @param isEncode
         */
        private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,
                String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) {
            try {
                if (cookieValue == null) {
                    cookieValue = "";
                } else if (isEncode) {
                    cookieValue = URLEncoder.encode(cookieValue, "utf-8");
                }
                Cookie cookie = new Cookie(cookieName, cookieValue);
                if (cookieMaxage > 0)
                    cookie.setMaxAge(cookieMaxage);
                if (null != request) {// 设置域名的cookie
                	String domainName = getDomainName(request);
                    logger.info("========== domainName: {} ==========", domainName);
                    if (!"localhost".equals(domainName)) {
                    	cookie.setDomain(domainName);
                    }
                }
                cookie.setPath("/");
                response.addCookie(cookie);
            } catch (Exception e) {
            	 e.printStackTrace();
            }
        }
    
        /**
         * 
         * @Description: 设置Cookie的值,并使其在指定时间内生效
         * @param request
         * @param response
         * @param cookieName
         * @param cookieValue
         * @param cookieMaxage	cookie生效的最大秒数
         * @param encodeString
         */
        private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,
                String cookieName, String cookieValue, int cookieMaxage, String encodeString) {
            try {
                if (cookieValue == null) {
                    cookieValue = "";
                } else {
                    cookieValue = URLEncoder.encode(cookieValue, encodeString);
                }
                Cookie cookie = new Cookie(cookieName, cookieValue);
                if (cookieMaxage > 0)
                    cookie.setMaxAge(cookieMaxage);
                if (null != request) {// 设置域名的cookie
                	String domainName = getDomainName(request);
                    logger.info("========== domainName: {} ==========", domainName);
                    if (!"localhost".equals(domainName)) {
                    	cookie.setDomain(domainName);
                    }
                }
                cookie.setPath("/");
                response.addCookie(cookie);
            } catch (Exception e) {
            	 e.printStackTrace();
            }
        }
    
        /**
         * 
         * @Description: 得到cookie的域名
         * @return
         */
        private static final String getDomainName(HttpServletRequest request) {
            String domainName = null;
    
            String serverName = request.getRequestURL().toString();
            if (serverName == null || serverName.equals("")) {
                domainName = "";
            } else {
                serverName = serverName.toLowerCase();
                serverName = serverName.substring(7);
                final int end = serverName.indexOf("/");
                serverName = serverName.substring(0, end);
                if (serverName.indexOf(":") > 0) {
                	String[] ary = serverName.split("\:");
                	serverName = ary[0];
                }
    
                final String[] domains = serverName.split("\.");
                int len = domains.length;
                if (len > 3 && !isIp(serverName)) {
                	// www.xxx.com.cn
                    domainName = "." + domains[len - 3] + "." + domains[len - 2] + "." + domains[len - 1];
                } else if (len <= 3 && len > 1) {
                    // xxx.com or xxx.cn
                    domainName = "." + domains[len - 2] + "." + domains[len - 1];
                } else {
                    domainName = serverName;
                }
            }
            return domainName;
        }
        
        public static String trimSpaces(String IP){//去掉IP字符串前后所有的空格  
            while(IP.startsWith(" ")){  
                   IP= IP.substring(1,IP.length()).trim();  
                }  
            while(IP.endsWith(" ")){  
                   IP= IP.substring(0,IP.length()-1).trim();  
                }  
            return IP;  
        }  
        
        public static boolean isIp(String IP){//判断是否是一个IP  
            boolean b = false;  
            IP = trimSpaces(IP);  
            if(IP.matches("\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}")){  
                String s[] = IP.split("\.");  
                if(Integer.parseInt(s[0])<255)  
                    if(Integer.parseInt(s[1])<255)  
                        if(Integer.parseInt(s[2])<255)  
                            if(Integer.parseInt(s[3])<255)  
                                b = true;  
            }  
            return b;  
        }  
    
    }
    
    
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  • 原文地址:https://www.cnblogs.com/xwxz/p/14445571.html
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