Question

我正在尝试使用NodeJS下载PDF文件，然后将其数据发送到客户端以嵌入页面中。以下是我下载PDF文件的方法：

exports.sendPdf = function(req, responce) {
    var donneRecu = req.body;
    var url = 'http://www.ieee.org/documents/ieeecopyrightform.pdf'//pdf link
    http.get(url, function(res) {
        var data = '';
        res.on('data', function(chunk) {
            console.log('downloading');
            data += chunk;
        });
        res.on("end", function() {
            console.log('downloaded');
            responce.header("Access-Control-Allow-Origin", "*");
            responce.header("Access-Control-Allow-Headers", "X-Requested-With");
            responce.header(200, {'content-type' : 'application/pdf'});
            responce.send(data);
        });
    }).on("error", function() {
        callback(null);
    });
}

如何将从NodeJS收到的数据发送到客户端？

修改我找到了解决方案：

exports.sendPdf = function(req, res) {

  var donneRecu = req.body;

  console.log(donneRecu['lien']);

  var url = donneRecu['lien']; //pdf link

  http.get(url, function(response) {

      var chunks = [];

      response.on('data', function(chunk) {

          console.log('downloading');

          chunks.push(chunk);

      });

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

接下来在我的角度控制器中：

var pdf = $scope.base64ToUint8Array(data);    
PDFJS.getDocument(pdf).then(functiongetPdfHelloWorld(_pdfDoc) {
$scope.pdfDoc = _pdfDoc;$scope.renderPage($scope.pageNum); });

Answer 1

我找到了解决方案：

exports.sendPdf = function(req, res) {

  var donneRecu = req.body;

  console.log(donneRecu['lien']);

  var url = donneRecu['lien']; //pdf link

  http.get(url, function(response) {

      var chunks = [];

      response.on('data', function(chunk) {

          console.log('downloading');

          chunks.push(chunk);

      });

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

接下来在我的角度控制器中：

var pdf = $scope.base64ToUint8Array(data);    
PDFJS.getDocument(pdf).then(functiongetPdfHelloWorld(_pdfDoc) {
$scope.pdfDoc = _pdfDoc;$scope.renderPage($scope.pageNum); });

Answer 2

我也面临同样的情况，下面的代码帮助了我。

var file = fs.createReadStream('./public/modules/datacollectors/output.pdf');
var stat = fs.statSync('./public/modules/datacollectors/output.pdf');
res.setHeader('Content-Length', stat.size);
res.setHeader('Content-Type', 'application/pdf');
res.setHeader('Content-Disposition', 'attachment; filename=quote.pdf');
file.pipe(res);

希望它有所帮助。

如何使用NodeJS下载pdf并将其发送到客户端？

2 个答案: