如何使用NodeJS下载pdf并将其发送给客户端? [英] how to download pdf using NodeJS and send it to the client?
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问题描述
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到页面中。以下是我如何下载PDF文件:
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('downloads');
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?
编辑
i找到解决方案:
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('数据',功能(块){
console.log('下载');
chunks.push(chunk);
}) ;
response.on(end,function(){
console.log('downloaded');
var jsfile = new Buffer.concat(chunks).toString ('base64');
console.log('convert to base64');
res.header(Access-Control-Allow-Origin,*);
res。标题(Access-Control-Allow-Headers,X-Requested-With);
res.header('content-type','application / pdf');
res.send jsfile);
});
})。on(error,function(){
callback(null);
});
}
我的角度控制器中的下一个: p>
var pdf = $ scope.base64ToUint8Array(data);
PDFJS.getDocument(pdf).then(functiongetPdfHelloWorld(_pdfDoc){
$ scope.pdfDoc = _pdfDoc; $ scope.renderPage($ scope.pageNum);});
解决方案
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('数据',功能(块){
console.log('下载');
chunks.push(chunk);
}) ;
response.on(end,function(){
console.log('downloaded');
var jsfile = new Buffer.concat(chunks).toString ('base64');
console.log('convert to base64');
res.header(Access-Control-Allow-Origin,*);
res。标题(Access-Control-Allow-Headers,X-Requested-With);
res.header('content-type','application / pdf');
res.send jsfile);
});
})。on(error,function(){
callback(null);
});
}
我的角度控制器中的下一个: p>
var pdf = $ scope.base64ToUint8Array(data);
PDFJS.getDocument(pdf).then(functiongetPdfHelloWorld(_pdfDoc){
$ scope.pdfDoc = _pdfDoc; $ scope.renderPage($ scope.pageNum);});
I am trying to download a PDF file using NodeJS then send its data to client to be embedded in the page. Here is how I download the PDF file:
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);
});
}
How do I send the data received from NodeJS to the client side?
EDIT i found the solution :
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); }); }
next in my angular controller:
var pdf = $scope.base64ToUint8Array(data); PDFJS.getDocument(pdf).then(functiongetPdfHelloWorld(_pdfDoc) { $scope.pdfDoc = _pdfDoc;$scope.renderPage($scope.pageNum); });
解决方案
i found the solution :
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); }); }
next in my angular controller:
var pdf = $scope.base64ToUint8Array(data); PDFJS.getDocument(pdf).then(functiongetPdfHelloWorld(_pdfDoc) { $scope.pdfDoc = _pdfDoc;$scope.renderPage($scope.pageNum); });
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