在2个子域之间共享会话数据 [英] Share session data between 2 subdomains

问题描述

我正在使用tomcat 7.0.6和jdk 1.6.0_22

I am using tomcat 7.0.6 with jdk 1.6.0_22

是否可以在两个不同的域之间共享具有公共子域的会话数据，例如a.mydomain .com和b.mydomain.com？

Is it possible to share session data between 2 different domains with a common subdomain such as a.mydomain.com and b.mydomain.com ?

使用默认的java servlet a.mydomain.com和b.mydomain.com获取不同的会话，但是不可能在mydomain.com中为所有子域创建一个共享会话？

With the default java servlet a.mydomain.com and b.mydomain.com get different sessions, but is it not possible to create a shared session for all subdomains in mydomain.com?

问题还在于我没有直接控制commen子域（mydomain.com）所以我可以'吨服务于任何的servlet从mydomain.com

The problem is also that I don't directly control the commen subdomain (mydomain.com) so I can't serve any servlets from mydomain.com

推荐答案

将 sessionCookieDomain 属性< Context> 有问题的webapp元素 .mydomain.com （注意前导点，这是很重要）。这将允许webbrowser在所有子域之间共享cookie。

Set the sessionCookieDomain attribute of <Context> element of the webapp in question to .mydomain.com (note the leading dot, this is very important). This will allow the webbrowser to share cookies among all subdomains.

如果您实际上有多个webapp上下文并且您想要在它们之间共享会话，那么您还需要设置 sessionCookiePath 的属性<语境GT; 所讨论的Web应用程序的元素以 / 。

If you actually have multiple webapp contexts and you want to share the session between them as well, then you also need to set sessionCookiePath attribute of <Context> element of the webapps in question to /.

简而言之：

<Context sessionCookieDomain=".mydomain.com" sessionCookiePath="/">

参见：

• Tomcat 7配置参考 - 上下文容器



See also:

• Tomcat 7 configuration reference - The Context container

对于Tomcat 6用户：请注意，这是在Tomcat 6.0.27中引入的。对于那些无法升级的人，您需要一个 Valve 来修改cookie域，最终与 emptySessionPath 结合使用对于您有多个webapp上下文的情况，< Connector> 元素在 /conf/server.xml 中的属性您想要分享会话。

For Tomcat 6 users: note that this was introduced in Tomcat 6.0.27. For those who can't upgrade, you would need a Valve to modify the cookie domain, eventually in combination with emptySessionPath attribute in <Connector> element in /conf/server.xml for the case that you've multiple webapp contexts for which you'd like to share the session.

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