没有库，它可能是错误的，只是指出。以下是一些例子:

不能处理http重定向，比如这个url https://calibre-ebook.com/dist/portable，它是二进制的。 http模块不能https url，你将得到协议“https:”不支持。

以下是我的建议:

调用系统工具，如wget或curl 使用一些类似node-wget-promise的工具，使用起来也非常简单。 Var wget = require('node-wget-promise'); wget(“http://nodejs.org/images/logo.svg”);

var requestModule=require("request");

requestModule(filePath).pipe(fs.createWriteStream('abc.zip'));

就像Michelle Tilley说的，但是要有适当的控制流:

var http = require('http');
var fs = require('fs');

var download = function(url, dest, cb) {
  var file = fs.createWriteStream(dest);
  http.get(url, function(response) {
    response.pipe(file);
    file.on('finish', function() {
      file.close(cb);
    });
  });
}

如果不等待finish事件，幼稚的脚本可能最终得到一个不完整的文件。

编辑:感谢@Augusto Roman指出cb应该传递到文件。Close，没有显式调用。

您可以尝试使用res.redirect到https文件下载url，然后它将下载文件。

如:res.redirect(“https / / static.file.com/file.txt”);

也许node.js已经改变了，但似乎其他解决方案(使用node v8.1.2)有一些问题:

You don't need to call file.close() in the finish event. Per default the fs.createWriteStream is set to autoClose: https://nodejs.org/api/fs.html#fs_fs_createwritestream_path_options file.close() should be called on error. Maybe this is not needed when the file is deleted (unlink()), but normally it is: https://nodejs.org/api/stream.html#stream_readable_pipe_destination_options Temp file is not deleted on statusCode !== 200 fs.unlink() without a callback is deprecated (outputs warning) If dest file exists; it is overridden

下面是一个修改后的解决方案(使用ES6和promises)，它可以处理这些问题。

const http = require("http");
const fs = require("fs");

function download(url, dest) {
    return new Promise((resolve, reject) => {
        const file = fs.createWriteStream(dest, { flags: "wx" });

        const request = http.get(url, response => {
            if (response.statusCode === 200) {
                response.pipe(file);
            } else {
                file.close();
                fs.unlink(dest, () => {}); // Delete temp file
                reject(`Server responded with ${response.statusCode}: ${response.statusMessage}`);
            }
        });

        request.on("error", err => {
            file.close();
            fs.unlink(dest, () => {}); // Delete temp file
            reject(err.message);
        });

        file.on("finish", () => {
            resolve();
        });

        file.on("error", err => {
            file.close();

            if (err.code === "EEXIST") {
                reject("File already exists");
            } else {
                fs.unlink(dest, () => {}); // Delete temp file
                reject(err.message);
            }
        });
    });
}

您可以创建一个HTTP GET请求，并将其响应管道到可写文件流:

const http = require('http'); // or 'https' for https:// URLs
const fs = require('fs');

const file = fs.createWriteStream("file.jpg");
const request = http.get("http://i3.ytimg.com/vi/J---aiyznGQ/mqdefault.jpg", function(response) {
   response.pipe(file);

   // after download completed close filestream
   file.on("finish", () => {
       file.close();
       console.log("Download Completed");
   });
});

如果您希望支持在命令行上收集信息(比如指定目标文件或目录或URL)，可以使用类似Commander的工具。

更详细的解释在https://sebhastian.com/nodejs-download-file/