在我的serverless
应用程序中,我想创建动态生成的 pdf,然后将创建的 pdf 上传到aws s3
. 我的问题是,当一个 url 从服务器返回到客户端代码时,上传的 url 不起作用。我的代码如下:
客户端 javascript 代码 (angular.js)
$scope.downloadAsPDF = function() {
// first I have to sent all html data into server
var html = angular.element('html').html(); // get all page data
var service = API.getService();
service.downloadPdf({}, { html : html }, // api call with html data
function(res) {
console.log("res : ", res);
window.open(res.url); // open uploaded pdf file
// err: The server replies that you don't have permissions to download this file
// HTTP/1.1 403 Forbidden
}, function(err) {
console.log("err : ", err);
});
};
无服务器代码
var fs = require('fs');
var pdf = require('html-pdf');
var AWS = require("aws-sdk");
var s3 = new AWS.S3();
module.exports.handler = function(event, context) {
if (event.html) { // client html data
AWS.config.update({
accessKeyId: 'xxxxxxxxxxxxxxxxx',
secretAccessKey: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
region: 'xxxxxxxxxxxxxxxxxxxx'
});
var awsInfo = {
bucket: 'xxxxx-xxxxxx'
};
var baseUrl = 'https://s3-my-region.amazonaws.com/s3-upload-directory';
var folderRoot = 'development/pdf';
// unique file name
var output_filename = Math.random().toString(36).slice(2) + '.pdf';
// file created directory
var output = '/tmp/' + output_filename;
pdf.create(event.html, options).toStream(function(err, stream) {
if( err ) {
console.log('pdf err : ', err);
} else {
writeStream =fs.createWriteStream(output);
s3.putObject({
Bucket : awsInfo.bucket,
Key : folderRoot + '/' + output_filename,
Body : fs.createReadStream(output),
ContentType : "application/pdf"
},
function(error, data) {
if (error != null) {
console.log("error: " + error);
} else {
// upload data: { ETag: '"d41d8cd98f00b204e9800998ecf8427e"' }
console.log('upload data : ', data);
return cb(null, {
// return actual aws link, but no file
// ex: 'https://s3-my-region.amazonaws.com/s3-upload-directory/output_filename.pdf
url: baseUrl + '/' + output_filename
});
}
});
}
}
};