httpsession

how to implement custom http session in java?

由 混江龙づ霸主 提交于 2021-02-07 02:47:49
问题 I will need to implement my own version of HttpSession in Java. I have found very little information which explains how achieve such a feat. I guess my problem is - how do I override the existing HttpSession no matter the application server's implementation? I did run across a quality but rather old read which helps me achieve my goal - http://java.sun.com/developer/technicalArticles/Servlets/ServletControl/ Are there any other approaches? 回答1: Its two ways. "Wrapping" the original

how to implement custom http session in java?

由 流过昼夜 提交于 2021-02-07 02:47:25
问题 I will need to implement my own version of HttpSession in Java. I have found very little information which explains how achieve such a feat. I guess my problem is - how do I override the existing HttpSession no matter the application server's implementation? I did run across a quality but rather old read which helps me achieve my goal - http://java.sun.com/developer/technicalArticles/Servlets/ServletControl/ Are there any other approaches? 回答1: Its two ways. "Wrapping" the original

Grails 2.5.4: Get all logged in users with HttpSessionListener

由 主宰稳场 提交于 2021-01-28 13:16:31
问题 I'm trying to get all the current user sessions using the app-info plugin but it doesn't compile in Grails 2.5.4 . Is there another way to get this information? I'm new to Grails. This link has some information including a reference to the app-info plugin but it's old and I wasn't able to get anything to compile. UPDATE I've added this custom class in src\groovy\UserSessions : package usersessions import javax.servlet.http.HttpSessionEvent import javax.servlet.http.HttpSessionListener /

简单模拟tomcat环境测试HttpSessionBindingListener实现效果

由 雨燕双飞 提交于 2020-03-18 16:04:20
某厂面试归来，发现自己落伍了！>>> HttpSessionBindingListener接口在很多情况下用于在线用户人数的统计与管理。不言而喻，session是必须的，但又不想专门启动tomcat运行一个web程序来测试它的效果。那么有没有办法直接调用tomcat自己的jar包来构造一个session来实现我的目的。比如： 1.调用tomcat的某个jar，这个包就是在tomcat运行时接收远程客户端的http请求时，用来构造HttpServletRequest、HttpServletResponse、HttpSession等我们熟知的servlet API中的实现类，现在我只需要HttpSession接口的实现。 2.获得了HttpSession实例之后，我就可以用session.setAttribute()方法将HttpSessionBindingListener的实例放入session，然后又调用session.removeAttribute()删除这个属性，看看HttpSessionBindingListener的实例中相应方法是否被触发，从而实现测试目的。 通过多番测试，证明上面的步骤是完全能实现的。 一、首先将tomcat安装目录下面的所有jar包引入工程（其实并非全部需要，只是为了操作简单），包括lib及bin目录下的。 二

In grails, how do I get a reference to all current sessions?

由 一曲冷凌霜 提交于 2020-01-30 04:41:39
问题 I'd like to list all current sessions in an Admin Controller in grails. What's the easiest way to get a reference to e.g. a Collection of sessions from the controller? 回答1: This is a feature (disabled by default but easily enabled by setting grails.plugins.appinfo.useContextListener = true in Config.groovy) of the App-Info plugin: http://grails.org/plugin/app-info 回答2: there is a "groovy" way to do this without a SessionListener, there are events generated that closures can be assigned to.

In grails, how do I get a reference to all current sessions?

由 五迷三道 提交于 2020-01-30 04:41:13
问题 I'd like to list all current sessions in an Admin Controller in grails. What's the easiest way to get a reference to e.g. a Collection of sessions from the controller? 回答1: This is a feature (disabled by default but easily enabled by setting grails.plugins.appinfo.useContextListener = true in Config.groovy) of the App-Info plugin: http://grails.org/plugin/app-info 回答2: there is a "groovy" way to do this without a SessionListener, there are events generated that closures can be assigned to.

How to @Inject a HttpSession object in a service layer (DAO) class in GWT using Guice?

由 烂漫一生 提交于 2020-01-23 03:50:46
问题 I have such a dirty code in my GWT app, some of the classes of my service layer depend on an HttpSession object. So for example, in one of my DAO (which was a GWT-RPC endpoint) I have something like this : public class MyExampleDAO extends RemoteServiceServlet { public findItems() { // here I need to get the object session to retrieve the currently logged in user in order to query for all its items... } } The problem is that, I am currently migrating the code to use RequestFactory. My DAO

lost in deployment: session.getAttribute() returns NULL in some Tomcat configurations

由 此生再无相见时 提交于 2020-01-17 02:19:45
问题 I am experiencing several issues that I can't understand from the first glances. The story is pretty simple, but I guess that the solution is behind some real configuration/deployment problem(s)/inconsistencies. I have defined a JSP and two servlets. The JSP puts something in the session and the servlets are supposed to fetch the data and to manipulate it. The main symptom is that the servlets do not see the session data, when seeing JSPs in Chrome and Firefox. Interesting, that the JSP

Where are the Java HttpSession attributes stored?

由 痴心易碎 提交于 2020-01-12 04:16:11
问题 Are the objects serialized and sent to the user and back on each connection (stored in cookies) ? Or are they stored in the server heap and the cookie is only a very small identifier ? Any information about this topic would be helpful. Thank you 回答1: You got it on the second guess. The cookie contains a JSESSIONID. That id is used to look up the user's HttpSession in a map that the server maintains. At least this is the most common way. There are more intricate ways that the server can

Where are the Java HttpSession attributes stored?

由 人走茶凉 提交于 2020-01-12 04:16:10
问题 Are the objects serialized and sent to the user and back on each connection (stored in cookies) ? Or are they stored in the server heap and the cookie is only a very small identifier ? Any information about this topic would be helpful. Thank you 回答1: You got it on the second guess. The cookie contains a JSESSIONID. That id is used to look up the user's HttpSession in a map that the server maintains. At least this is the most common way. There are more intricate ways that the server can
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