Content-Type
来做文档类型验证,可以参考我在这里的回答如何判断浏览器上传文件的真实类型?
ForceType application/octet-stream
<FilesMatch "(?i)\.jpe?g$">
ForceType image/jpeg
</FilesMatch>
<FilesMatch "(?i)\.gif$">
ForceType image/gif
</FilesMatch>
<FilesMatch "(?i)\.png$">
ForceType image/png
</FilesMatch>