Node.js:如何限制 HTTP 请求大小和上传文件大小?

问题描述

我正在使用 Node.js 和 express.

I'm using Node.js and express.

我想限制 HTTP 请求的大小.假设有人向我发送超过 2 MB 的 HTTP 请求，我会立即停止该请求.我查看了代码，我认为如果我更改核心，我可以做到.但是，有没有办法设置 max_request_size 或类似的东西?

I would like to limit the HTTP request size. Let's say, if someone sends me a HTTP request more than 2 MB then I stop the request right away. I looked at the code and I think if I change the core, I can do it. However, is there a way to set a max_request_size or soemthing like that?

这与我的第二个问题有关.我正在使用 express 从 req.files 获取上传的文件.有没有办法在文件大小超过特定文件大小时停止将文件写入 /tmp 文件夹(这是默认上传行为)?

It is kind of related to my second question. I'm using express to get an uploaded file from req.files. Is there a way to stop writing the file to the /tmp folder (which is the default upload behavior) as soon as the file size exceeds a certain file size?

推荐答案

只是更新 (07-2014)，因为我无法添加评论:

Just an update (07-2014), as I'm not able to add comments:

如上所述，较新的 Express 版本已弃用 limit 中间件，现在将其作为 内置选项，用于 BodyParser 中间件:

As correctly noted above, newer Express versions have deprecated the use of the limit middleware and now provide it as a built-in option for the BodyParser middleware:

   var express    = require('express')
   var bodyParser = require('body-parser')

   var app = express()
   app.use(bodyParser.json({ limit: '5mb' }))

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