Question

我试图通过curl --upload-file上传文件由于某种原因，卷曲冻结和upload.backup被创建为空。有关如何更改此代码以使其工作的任何想法？我一定是误解了API

var http = require('http'); 
var fs = require('fs');
var server = http.createServer(function(request, response) {
    var fileBackup = fs.createWriteStream("upload.backup");
    var fileBytes = request.headers['content-length'];
    var uploadedBytes = 0;
    request.on('readable', function() {
        var chunk = null;
        while (null !== (chunk = request.read())) {
            uploadedBytes += chunk.length;
            var progress = uploadedBytes / fileBytes * 100;
            response.write("progress: " + parseInt(progress, 10) + "%\n");
        }
    });
    request.pipe(fileBackup);
}).listen(8080);

Answer 1

一个问题是您没有结束您的回复。其次，您可以在将数据写入文件之前从请求流中读取数据。

尝试这样的事情：

var http = require('http'); 
var fs = require('fs');
var server = http.createServer(function(request, response) {
  var fileBackup = fs.createWriteStream('upload.backup');
  var fileBytes = parseInt(request.headers['content-length'], 10);
  var uploadedBytes = 0;
  request.pipe(fileBackup);
  if (!isNaN(fileBytes)) {
    request.on('data', function(chunk) {
      uploadedBytes += chunk.length;
      response.write('progress: ' + (uploadedBytes / fileBytes * 100) + '%\n');
    });
  }
  request.on('end', function() {
    response.end();
  });
}).listen(8080);

Node.js - 带进度的文件上传

1 个答案: