Node Express 发送图像文件作为 API 响应 [英] Node Express sending image files as API response

问题描述

我用谷歌搜索了这个但找不到答案，但这一定是一个常见问题.这与 >

I Googled this but couldn't find an answer but it must be a common problem. This is the same question as Node request (read image stream - pipe back to response), which is unanswered.

How do I send an image file as an Express .send() response? I need to map RESTful urls to images - but how do I send the binary file with the right headers? E.g.,

<img src='/report/378334e22/e33423222' />

Calls...

app.get('/report/:chart_id/:user_id', function (req, res) {
     //authenticate user_id, get chart_id obfuscated url
     //send image binary with correct headers
});

解决方案

There is an api in Express.

res.sendFile

app.get('/report/:chart_id/:user_id', function (req, res) {
    // res.sendFile(filepath);
});

http://expressjs.com/en/api.html#res.sendFile

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