Question

我正在创建一个从url下载pdf文件的应用程序，并在我的仪表板页面中以网格方式显示。

我正在使用带有快速框架的node.js.

exports.pdf = function(req, response) {
    var url ="http://www.ieee.org/documents/ieeecopyrightform.pdf";

    http.get(url, function(res) {
     var chunks = [];
     res.on('data', function(chunk) {
     console.log('start');
     chunks.push(chunk);
    });

    res.on("end", function() {
      console.log('downloaded');
      var jsfile = new Buffer.concat(chunks).toString('base64');
      console.log('converted to base64');
      response.header("Access-Control-Allow-Origin", "*");
      response.header("Access-Control-Allow-Headers", "X-Requested-With");
      response.header('content-type', 'application/pdf');
     response.send(jsfile);
    });
    }).on("error", function() {
   console.log("error");
   }); 
};

Answer 1

我以前在node js中下载pdf的简单解决方案是 npm i node-downloader-helper ，只需添加下载网址：

const { DownloaderHelper } = require('node-downloader-helper');

const download = new DownloaderHelper('url', __dirname);
download.on('end', () => console.log('Download Completed'))
download.start();

Answer 2

这将有所帮助。

response.setHeader("Content-Type", "text/pdf");

This Link will help

Answer 3

对于那些希望下载PDF服务器端（与OP有点不同的用例）的人来说，这是我使用request npm模块进行的操作：

const fs = require("fs");
const request = require("request-promise-native");

async function downloadPDF(pdfURL, outputFilename) {
    let pdfBuffer = await request.get({uri: pdfURL, encoding: null});
    console.log("Writing downloaded PDF file to " + outputFilename + "...");
    fs.writeFileSync(outputFilename, pdfBuffer);
}

downloadPDF("https://www.ieee.org/content/dam/ieee-org/ieee/web/org/pubs/ecf_faq.pdf", "c:/temp/somePDF.pdf");

如何从node.js中的url下载pdf文件？

3 个答案: