Internet Explorer 8 拒绝从弹出窗口下载文件
我正在制作一个网站。在一个地方有一个按钮执行 Ajax 回调，然后尝试通过 window.open() 下载文件。预期的行为是新窗口短暂闪烁，然后出现文件下载。这在 IE9 上工作正常，但 IE8 似乎有问题，即使禁用了弹出窗口阻止程序。
经过进一步的实验，我发现了另一个奇怪的行为。如果我在新打开的选项卡的地址栏中手动输入下载的 URL，则会收到一条错误消息。无法下载的一般情况。如果我现在尝试刷新页面（或者只需在地址栏中按 ENTER 键，从而重复相同的请求），下载就会顺利进行。
我预计它可能与 content-disposition 或 cache-control 标头有关，但删除这些标头并没有帮助。将 URL 添加到“可信站点”区域也没有。
无论如何，我将尝试用 window.location 重新制作它，因为我不喜欢弹出窗口（不是我制作的），但我对这种行为感到困惑。是什么原因造成的？
I'm crafting a website. In one place there is a button which performs an Ajax callback, and then tries to download a file via window.open(). The expected behaviour is for the new window to flash briefly and then a file download to appear. This works fine on IE9, but IE8 seems to have a problem with that, even with popup blocker disabled.
After further experimenting I found another peculiar behavior. If I enter the URL of the download manually into the addressbar of a freshly opened tab, I get an error message. Something generic about not being able to download. If I now try to refresh the page (or just hit ENTER in the address bar, thereby repeating the same request), the download proceeds nicely.
I expected that it might have something to do with content-disposition or cache-control headers, but removing those didn't help. Nor did adding the URL to the "trusted sites" zone.
I'm going to try and remake it with window.location instead anyway, because I don't like the popup (that wasn't made by me), but I'm puzzled about this behavior. What causes it?
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我遇到了类似的问题。事实证明，当您使用 AJAX 获取文件时，IE 无法打开文件。我使用的解决方案是不使用ajax。相反，我使用了一些 jQuery 和一个 iframe：
I ran across a similar issue. It turns out that IE has trouble opening files when you use AJAX to get them. The solution I used is to not use ajax. Instead I used a little jQuery and a
iframe: