blocks|key|4699585|text|Archiver有一个append方法，可以让您将文本保存为文件。要将该数据“流式传输”给用户，只需通过管道将其发送到HTTP+response对象。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4699586|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);|code-block|syntax|javascript|4699587|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看到文件下载提示。|4699588|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/ctalkington/node-archiver^0|0|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|C|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

<a href="https://github.com/ctalkington/node-archiver" rel="noreferrer">Archiver</a> has an append method that lets you save text as a file. To "stream" that data to the user you can simply pipe to the HTTP response object.

<pre><code>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);
</code></pre>

This will create a zip file with the two text files. The user visiting this page will be presented with a file download prompt.

blocks|key|4699636|text|使用expressjs和node-+zip以二进制数据的形式发送zip文件：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4699637|app.get("/multipleinzip",+(req,+res)+=>+{
++++var+zip+=+new+require('node-zip')();
++++var+csv1+=+"a,b,c,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8";
++++zip.file('test1.file',+csv1);
++++var+csv2+=+"z,w,x,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8";
++++zip.file('test2.file',+csv2);
++++var+csv3+=+"q,w,e,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8";
++++zip.file('test3.file',+csv3);
++++var+csv4+=+"t,y,u,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8";
++++zip.file('test4.file',+csv4);
++++var+data+=+zip.generate({base64:false,compression:'DEFLATE'});
++++console.log(data);+//+ugly+data
++++res.type("zip")
++++res.send(new+Buffer(data,+'binary'));
})|code-block|syntax|javascript|4699638|为zip文件创建下载链接。使用->获取数据并将响应转换为数组缓冲区|4699639|++++//get+the+response+from+fetch+as+arrayBuffer...
++++var+data+=+response.arrayBuffer();

++++const+blob+=+new+Blob([data]);
++++const+fileName+=+`${filename}.${extension}`;
++++
++++if+(navigator.msSaveBlob)+{
++++++//+IE+10%2B
++++++navigator.msSaveBlob(blob,+fileName);
++++}+else+{
++++++const+link+=+document.createElement('a');
++++++//+Browsers+that+support+HTML5+download+attribute
++++++if+(link.download+!==+undefined)+{
++++++++const+url+=+URL.createObjectURL(blob);
++++++++link.setAttribute('href',+url);
++++++++link.setAttribute('download',+fileName);
++++++++link.style.visibility+=+'hidden';
++++++++document.body.appendChild(link);
++++++++link.click();
++++++++document.body.removeChild(link);
++++++}
++++}|4699640|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Sending a zip file as binary data with expressjs and node-zip:
<pre><code>app.get(&quot;/multipleinzip&quot;, (req, res) =&gt; {
 var zip = new require('node-zip')();
 var csv1 = &quot;a,b,c,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8&quot;;
 zip.file('test1.file', csv1);
 var csv2 = &quot;z,w,x,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8&quot;;
 zip.file('test2.file', csv2);
 var csv3 = &quot;q,w,e,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8&quot;;
 zip.file('test3.file', csv3);
 var csv4 = &quot;t,y,u,d,e,f,g,h\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8\n1,2,3,4,5,6,7,8&quot;;
 zip.file('test4.file', csv4);
 var data = zip.generate({base64:false,compression:'DEFLATE'});
 console.log(data); // ugly data
 res.type(&quot;zip&quot;)
 res.send(new Buffer(data, 'binary'));
})
</code></pre>
Creating a download link for the zip file. Fetch data and convert the response to an arraybuffer with -&gt;
<pre><code> //get the response from fetch as arrayBuffer...
 var data = response.arrayBuffer();

 const blob = new Blob([data]);
 const fileName = `${filename}.${extension}`;
 
 if (navigator.msSaveBlob) {
 // IE 10+
 navigator.msSaveBlob(blob, fileName);
 } else {
 const link = document.createElement('a');
 // Browsers that support HTML5 download attribute
 if (link.download !== undefined) {
 const url = URL.createObjectURL(blob);
 link.setAttribute('href', url);
 link.setAttribute('download', fileName);
 link.style.visibility = 'hidden';
 document.body.appendChild(link);
 link.click();
 document.body.removeChild(link);
 }
 }
</code></pre>

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. I want the client to receive:

<pre><code>tmp.zip
 --&gt; 1.txt
 --&gt; 2.txt
 --&gt; 3.txt
</code></pre>

Where 1,2,3.txt are created on the fly and streamed to the zip file. Is this possible?

Dynamically create and stream zip to client

文件系统

HTML5

我正在使用NodeJs (w/express)，并且我正在尝试将一个zip文件回流到客户端。zip中包含的文件不在文件系统中，而是动态创建的。我想将文件内容流式传输到压缩包，然后将压缩包流回客户端。也就是说，我希望客户端接收到：tmp.zip --> 1.txt --> 2.txt --> 3.txt其中动态创建1,2...

问动态创建zip并将其流式传输到客户端
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