我正在制作一个React应用,我可以让用户上传pdf文件,然后将pdf文件转换为jpg文件,将其存储在本地,然后将其上传到AWS s3。但是当前,当我将jpg文件上传到aws s3时,该文件未作为图像文件上传。我想将本地图像文件上传到AWS s3,而不必使用<input type="file" />
我尝试将fs.readFile()
与s3.upload()
一起使用,但是上传的文件不是图像文件。我也尝试使用multer-s3
,但这需要用户使用<input type="file" />
手动选择图像文件,这是我要避免的。
这是我上载jpg文件的方式:
const aws = require("aws-sdk");
const multer = require("multer");
const fs = require("fs");
const convertPdf = require("pdf-poppler");
const s3 = new aws.S3({
accessKeyId: "<key>",
secretAccessKey: "<secret>",
Bucket: "<bucketName>"
});
const storage = multer.diskStorage({
destination: function(req, file, cb) {
cb(null, path.join(__dirname + "/uploads/"));
},
filename: function(req, file, cb) {
// let pdfName = "samplePDF";
// req.body.file = pdfName;
cb(null, file.originalname);
}
});
const upload = multer({
storage: storage
}); //SAVING PDF TO DISK STORAGE
router.post("/pdf", upload.single("pdf"),(req, res, next) => {
const uploadPath = req.file.path;
var imagePath = req.file.destination + req.file.originalname.slice(0, -4) + "-1.jpg";
let opts = {
format: "jpg",
out_dir: req.file.destination,
out_prefix: path.basename(req.file.path).slice(0, -4),
page: null
}
//CONVERTING PDF TO JPG
convertPdf.convert(uploadPath, opts).then(() =>
{
fs.readFile(imagePath, (err, data) => {
if (err) throw err;// UPLOADING FILE BUT NOT IN IMAGE FORMAT
const params = {
Bucket: "<bucketName>",
Key: path.basename(imagePath),
Body: data
};
s3.upload(params, (s3Error, data) => {
if (s3Error) throw s3Error;
console.log(`File uploaded successfully at ${data.Location}`);
res.json({
image: data.key,
location: data.Location
});
});
});
});
});
我期望要上载图像文件,但不是上载文件不是图像文件,这是问题所在。有什么方法可以在不使用输入字段的情况下将本地图像文件上传到AWS s3?
编辑:结果表明,aws s3默认情况下将上传的文件设为私有,这就是为什么无法读取文件的原因,当我将文件设为公开时,问题已解决。
答案 0 :(得分:0)
上载的文件是图像文件,只是没有正确的权限。我添加了ACL: "public-read"
参数,现在文件按预期显示。
更新的代码:
fs.readFile(imagePath, (err, data) => {
if (err) throw err;
const params = {
Bucket: "flyingfishcattle",
Key: path.basename(imagePath),
Body: data,
ACL: "public-read"
};
s3.upload(params, (s3Error, data) => {
if (s3Error) throw s3Error;
console.log(`File uploaded successfully at ${data.Location}`);
res.json({
image: data.key,
location: data.Location
});
});
});