setMaxAge的值为0和负值之间的差异 [英] Difference between 0 and negative value for setMaxAge for Cookie

问题描述

来自setMaxAge（int）的Cookie文件：
http://docs.oracle.com/javaee/1.3/api/javax/servlet/http/Cookie.html#setMaxAge（int）
int = 0和int = -ve？它说0删除cookie。 -ve值表示不存储cookie。

From cookie docs for setMaxAge(int): http://docs.oracle.com/javaee/1.3/api/javax/servlet/http/Cookie.html#setMaxAge(int) Is there any difference between int = 0 and int = -ve? It says 0 deletes cookie. -ve value means cookie is not stored. Does that mean 0 deletes only from current browser session?

推荐答案

我建议你从浏览器的角度去阅读cookies。这很有趣。请注意，'max-age'是'expires'的较新版本，某些浏览器可能不支持。 （例如，IE6，IE7和IE8不支持max-age。）

I suggest you go read about cookies from a browser perspective. It's very interesting. Note that 'max-age' is the newer version of 'expires' and some browsers may not support it. (For example, IE6, IE7, and IE8 don't support max-age.)

0表示立即删除cookie。

0 means delete the cookie right now.

negative表示保留cookie一段时间。我怀疑范围有些浏览器特定，但它不会保留cookie跨关闭和重新打开浏览器。

negative means preserve the cookie for a while. I suspect the scope is somewhat browser specific but it will not preserve the cookie across closing and reopening the browser.

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