Node.js：如何限制HTTP请求大小和上传文件大小？ [英] Node.js: how to limit the HTTP request size and upload file size?

问题描述

我正在使用Node.js和express。

我想限制HTTP请求大小。假设有人向我发送超过2 MB的HTTP请求，那么我立即停止请求。我看着代码，我想如果我改变核心，我可以做到。但是，有没有办法设置一个 max_request_size 或这样的东西？

这与我的第二个问题我正在使用快递从 req.files 获取上传的文件。一旦文件大小超过某个文件大小，是否有办法停止将文件写入 / tmp 文件夹（这是默认的上传操作）？

解决方案

只是更新（07-2014），因为我无法添加评论：

如上所述，较新的Express版本已弃用使用限制中间件，现在将其作为 内置选项 为 BodyParser 中间件

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

I'm using Node.js and express.

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?

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?

解决方案

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

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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