本文介绍了动态地创建并流式传输到客户端的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用NodeJs(w / express),我正在尝试将zip文件流送回客户端。 zip中包含的文件不会生成在文件系统上,而是动态创建的。我想将文件的内容流式传输到zip,并将zip流传送回客户端。
I am using NodeJs (w/express) and I am trying to stream a zip file back to the client. The files contained in the zip do not live on the file system, rather they are created dynamically. I would like to stream the file(s) content to the zip and stream the zip back to the client.
I.E。我想让客户收到:
I.E. I want the client to receive:
tmp.zip
--> 1.txt
--> 2.txt
--> 3.txt
其中1,2,3.txt即时创建并流式传输到zip文件。这是可能的吗?
Where 1,2,3.txt are created on the fly and streamed to the zip file. Is this possible?
推荐答案
Archiver有一个附加方法,可以将文本保存为文件。要将数据流到用户,您可以简单地将其传送到HTTP响应对象。
var Http = require('http');
var Archiver = require('archiver');
Http.createServer(function (request, response) {
// Tell the browser that this is a zip file.
response.writeHead(200, {
'Content-Type': 'application/zip',
'Content-disposition': 'attachment; filename=myFile.zip'
});
var zip = Archiver('zip');
// Send the file to the page output.
zip.pipe(response);
// Create zip with some files. Two dynamic, one static. Put #2 in a sub folder.
zip.append('Some text to go in file 1.', { name: '1.txt' })
.append('Some text to go in file 2. I go in a folder!', { name: 'somefolder/2.txt' })
.file('staticFiles/3.txt', { name: '3.txt' })
.finalize();
}).listen(process.env.PORT);
这将创建一个包含两个文本文件的zip文件。访问此页面的用户将显示一个文件下载提示。
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