使用node.js动态创建文件并使其可供下载 [英] Dynamically creating a file with node.js and make it available for download

问题描述

我正在Node.js中构建文本编辑器，用户可以在其中在文本区域中创建文件.完成文件编辑后，他可以按下导出"按钮，该按钮触发一个Jquery函数，该函数读取textarea并将文本发布到node.js服务器上.服务器应读取该信息并返回文件.我想避免在服务器上创建文件并提供服务，而是希望通过流动态创建文件.我已经尝试使用以下方法，但是没有用:

I am building a text editor in Node.js where a user create a file in a textarea. When he is done editing the file, he can push an "export" button that triggers a Jquery function that reads the textarea and post the text on the node.js server. The server should read the information and return a file. I would like to avoid creating a file on the server and servicing it, I'd rather create a file on the fly with streams. I have tried using the following and but that didn't work:

exports.exportfile = function(req,res){

  var Stream = require('stream')
  var stream = new Stream();

  res.setHeader('Content-disposition', 'attachment; filename=try.txt');
  res.setHeader('Content-type', 'text/plain');

  stream.pipe = function(dest) {
    dest.write('Hello Dolly')
  }

    stream.pipe(res)
}

有人对如何实现这一目标有任何见识吗?

Does anybody have any insight on how to achieve this?

推荐答案

我在服务器上对其进行了测试，并且可以正常工作.它来自GET调用，但我不明白为什么它不适用于POST.

I tested this on my server and it worked. It was from a GET call but I don't see why it wouldn't work with a POST.

res.setHeader('Content-disposition', 'attachment; filename=theDocument.txt');
res.setHeader('Content-type', 'text/plain');
res.charset = 'UTF-8';
res.write("Hello, world");
res.end();

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