【Utils】CookieUtil

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.Base64;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/** * * Cookie  Tool class  * */
public final class CookieUtils {
    

    /** *  obtain Cookie Value ,  No coding  * * @param request * @param cookieName * @return */
    public static String getCookieValue(HttpServletRequest request, String cookieName) {
    
        return getCookieValue(request, cookieName, false);
    }

    /** *  obtain Cookie Value , * * @param request * @param cookieName * @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;
    }


    public static String getCookieValueBase64(HttpServletRequest request, String cookieName) {
    
        Cookie[] cookieList = request.getCookies();
        if (cookieList == null || cookieName == null) {
    
            return null;
        }
        String retValue = null;
        for (int i = 0; i < cookieList.length; i++) {
    
            if (cookieList[i].getName().equals(cookieName)) {
    
                retValue = new String(Base64.getDecoder().decode(cookieList[i].getValue().getBytes()));
                break;
            }
        }
        return retValue;
    }
    public static final void doSetCookieBase64(HttpServletRequest request, HttpServletResponse response,
                                          String cookieName, String cookieValue, int cookieMaxage) {
    
        try {
    
            if (cookieValue == null) {
    
                cookieValue = "";
            } else {
    
                cookieValue = Base64.getEncoder().encodeToString(cookieValue.getBytes());
            }
            Cookie cookie = new Cookie(cookieName, cookieValue);
            if (cookieMaxage > 0)
                cookie.setMaxAge(cookieMaxage);
            if (null != request) {
    //  Set the domain name cookie
                String domainName = getDomainName(request);
                System.out.println(domainName);
// if (!"localhost".equals(domainName)) {
    
// cookie.setDomain(domainName);
// }
            }
            cookie.setPath("/");
            response.addCookie(cookie);
        } catch (Exception e) {
    
            e.printStackTrace();
        }
    }

    /** *  obtain Cookie Value , * * @param request * @param cookieName * @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;
    }

    /** *  Set up Cookie Value   If the effective time is not set, the browser will be disabled by default , No coding  */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue) {
    
        setCookie(request, response, cookieName, cookieValue, -1);
    }

    /** *  Set up Cookie Value   Take effect within the specified time , But don't code  */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, int cookieMaxage) {
    
        setCookie(request, response, cookieName, cookieValue, cookieMaxage, false);
    }

    /** *  Set up Cookie Value   Do not set the effective time , But coding  */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, boolean isEncode) {
    
        setCookie(request, response, cookieName, cookieValue, -1, isEncode);
    }

    /** *  Set up Cookie Value   Take effect within the specified time ,  Encoding parameters  */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, int cookieMaxage, boolean isEncode) {
    
        doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, isEncode);
    }

    /** *  Set up Cookie Value   Take effect within the specified time ,  Encoding parameters ( Specified encoding ) */
    public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,
            String cookieValue, int cookieMaxage, String encodeString) {
    
        doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, encodeString);
    }

    /** *  Delete Cookie belt cookie domain name  */
    public static void deleteCookie(HttpServletRequest request, HttpServletResponse response,
            String cookieName) {
    
        doSetCookie(request, response, cookieName, "", -1, false);
    }

    /** *  Set up Cookie Value , And make it effective within the specified time  * * @param cookieMaxage cookie The maximum number of seconds in effect  */
    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) {
    //  Set the domain name cookie
            	String domainName = getDomainName(request);
            	System.out.println(domainName);
// if (!"localhost".equals(domainName)) {
    
// cookie.setDomain(domainName);
// }
            }
            cookie.setPath("/");
            response.addCookie(cookie);
        } catch (Exception e) {
    
        	 e.printStackTrace();
        }
    }

    /** *  Set up Cookie Value , And make it effective within the specified time  * * @param cookieMaxage cookie The maximum number of seconds in effect  */
    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) {
    //  Set the domain name cookie
            	String domainName = getDomainName(request);
            	System.out.println(domainName);
                if (!"localhost".equals(domainName)) {
    
                	cookie.setDomain(domainName);
                }
            }
            cookie.setPath("/");
            response.addCookie(cookie);
        } catch (Exception e) {
    
        	 e.printStackTrace();
        }
    }

    /** *  obtain cookie Domain name of  */
    private static final String getDomainName(HttpServletRequest request) {
    
        String domainName = null;

        String serverName = request.getRequestURL().toString();
        if (serverName == null || serverName.equals("")) {
    
            domainName = "";
        } else {
    
            final int end = serverName.indexOf("/");
            serverName = serverName.substring(0, end);
            final String[] domains = serverName.split("\\.");
            int len = domains.length;
            if (len > 3) {
    
                // 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;
            }
        }

        if (domainName != null && domainName.indexOf(":") > 0) {
    
            String[] ary = domainName.split("\\:");
            domainName = ary[0];
        }
        return domainName;
    }

}