Cookie Object Toolkit, object Add, get, modify-Pro test available

Let's start by understanding the concepts of cookies and session objects.

First, the cookie is the client-side caching technology, the size is generally about 4KB, mainly store some relatively small information, commonly used examples have a user name and password, and is not secure;

Session is the server cache technology, size does not control, data information stored in the server, is safe.

Here is a cookie toolkit that I have repeatedly tested and encapsulated for learning to use.

1  Packagecom.rick.framework.utils;2 3 ImportJava.util.HashMap;4 ImportJava.util.Map;5 6 ImportJavax.servlet.http.Cookie;7 Importjavax.servlet.http.HttpServletRequest;8 ImportJavax.servlet.http.HttpServletResponse;9 Ten /** One * Cookiesutil.java A  * @authorRick - * 2016 May 2, 2016 PM 8:59:00 - * Name&path: It is recommended to use "constant" definition the  */ -  Public classCookiesutil { -      -     /** + * Add Cookie Object -      * @paramResponse Request +      * @paramname names A      * @paramValue Content at      * @paramPath paths -      * @paramexpiry effective time (seconds) -      * @return -      */ -      Public Static BooleanSetcookie (httpservletresponse response, string name, string value, String path,intexpiry) { -Cookie cookie =NewCookie (name, value); inCookie.setmaxage (expiry);//Cookie Effective Time (seconds):-1 Close browser fails, 0 immediately expires, greater than 1 for specific time - Cookie.setpath (path); to Response.addcookie (cookie); +  -         return false; the     } *      $     Panax Notoginseng     /** - * Get cookies by name the      * @paramRequest +      * @paramname names A      * @paramPath paths the      * @return +      */ -      Public StaticCookie Getcookiebyname (httpservletrequest request, String name,string path) { $map<string, cookie> cookiemap =Readcookiemap (request); $         if(Cookiemap.containskey (name)) { -Cookie cookie =(Cookie) cookiemap.get (name); -             returncookies; the}Else { -             return NULL;Wuyi         } the     } -  Wu     /** - * Remove Client Cookie Object About      * @paramRequest Requests $      * @paramResponse Response -      * @paramname names -      * @paramPath paths -      * @return A      */ +      Public Static BooleanRemovecookie (httpservletrequest request,httpservletresponse response,string name,string path) { the         //--Clear Client cookie -         Try { $Cookie cookie =cookiesutil.getcookiebyname (Request, name, path); the             if(cookie!=NULL){ theCookie.setmaxage (0); the Cookie.setpath (path); theCookie.setvalue (NULL); - Response.addcookie (cookie); in                 return true; the             } the}Catch(Exception e) {} About         return false; the     } the      the     /** + * Encapsulate cookies in map -      *  the      * @paramRequestBayi      * @return the      */ the     Private StaticMap<string, cookie>Readcookiemap (HttpServletRequest request) { -map<string, cookie> cookiemap =NewHashmap<string, cookie>(); -cookie[] Cookies =request.getcookies (); the         if(NULL!=cookies) { the              for(Cookie cookie:cookies) { the Cookiemap.put (Cookie.getname (), cookie); the             } -         } the         returnCookiemap; the     } the     94}

"Sign In"-Set cookies

Cookiesutil.setcookie (response, Iconstant.user_cookie_name, User.getname (), Iconstant.user_cookie_path, 60*10);//- -Set the user's 10-minute effective time

"Personal Center"-Get Cookies

Cookie cookie = cookiesutil.getcookiebyname (request, Iconstant.user_cookie_name,iconstant.user_cookie_path);//-- Get cookie object using name + path

"Exit"-Clear cookies

Cookiesutil.removecookie (Request, Response, Iconstant.user_cookie_name, Iconstant.user_cookie_path);//--by name + Path Delete Cookie Object

Cookie Object Toolkit, object Add, get, modify-Pro test available