代码如下:
Response.ContentType = "application/octet-stream"; Response.ContentType = "application
Response.ContentType = "application/octet-stream"; Response.ContentType = "application
阅读背景：
客户端用window.open打开一个窗口下载文件,但下载完后窗口必须手动关闭,为什么?
来源：互联网
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