Safari为什么不遵守我的缓存控制指令？ [英] Why doesn't Safari honor my cache-control directive?
问题描述
我希望浏览器始终加载一个特定的页面，特别是当用户按下浏览器的后退按钮进入该页面时。
There is a particular page that I would like the browser to always load, particularly when the user presses the browser back button to get to it.
因此，我使用此页眉中的以下 Cache-Control指令（直接从我的代码中获取PHP）。
So I use the following 'Cache-Control' directive in the header for this page (taking the PHP directly from my code).
$headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, max-age=0';
此功能适用于FF，IE和Chrome，但Safari（5.0.1）似乎忽略了该指令并且无法重新加载页面（跨多个用户，因此这似乎不是特定于安装程序的问题）。搜索还没有发现任何已知的错误，因此，我认为我的观点有些不对。
This works for FF, IE and Chrome, but Safari (5.0.1) seems to ignore the directive and fails to reload the page (across multiple users, so it doesn't seem to be a setup specific problem). Searching hasn't revealed any known bugs, so I'm assuming there is something amiss on my end.
任何指针将不胜感激。
Any pointers would be much appreciated.
更新：刚刚在SO上找到了这个答案。
Update: just found this answer on SO.
还没有尝试过但是，看起来很有希望。
Haven't tried it yet, but looks promising. Very strange that it is an addition to the body tag, so Im skeptical.
推荐答案
答案是在以下代码中包含以下属性：正文标签，以强制Safari重新加载页面：
The answer is to include the following attribute in the body tag to force Safari to reload the page:
onunload=""
例如：
<body onunload="">
我在这里找到了它： Safari浏览器忽略了我的无缓存
又是从以下线程中获取的：< a href = https://stackoverflow.com/questions/158319/cross-browser-onload-event-and-the-back-button>单击后退按钮时是否存在跨浏览器加载事件？
Which in turn got it from this thread: Is there a cross-browser onload event when clicking the back button?
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