由网友(国民小青年。)分享简介：我需要提供的网站访问者一个链接下载原始的高分辨率图像。如果我只是链接到的图像与A HREF =image.jpg文件，浏览器显示的图像。如何让我的浏览器下载呢？I need to provide website visitors a link to download an original high resoluti...

我需要提供的网站访问者一个链接下载原始的高分辨率图像。如果我只是链接到的图像与A HREF =image.jpg文件，浏览器显示的图像。如何让我的浏览器下载呢？

I need to provide website visitors a link to download an original high resolution image. If I simply link to the image with a href="image.jpg", the browser displays the image. How do I make the browser download it?

我使用亚马逊S3服务器这些图像...如果这需要有一个特殊的头在图像上设置，我敢肯定，这是可能的。但我也想有时显示这些图像。进行此工作，S3任何提示将是巨大的。

I'm using amazon S3 to server these images... If this requires having a special header set on the image, I'm sure it's possible.. but I also want to display these images sometimes. Any tips on making this work with S3 would be great.

推荐答案

你是对的。有需要做一些这方面的头。这将是：

You are right. There are some headers needed to do this. These would be:

Content-type: image/png
Content-Disposition: attachment; filename="some_image.png"

我不知道S3如何处理这一点，但如果你想不显示这些图像，内容处置头应该被排除在外。

I am not sure how S3 handles this but if you want do display these images, the Content-Disposition header should be left out.

编辑：通过＆LT显示图像; IMG SRC =some_image.pngALT =/＆GT; 继续工作，即使与发送两个头。图像显示很好地在我的测试。

Displaying the image via <img src="some_image.png" alt="" /> continues to work even with both headers being sent. The image displays nicely in my tests.