我正在创建一个有角度的应用程序,在其中我从客户端发起POST调用。在服务器端,我使用multer-sharp-s3设置了路由,在该路由中,我会生成一个新名称(密钥),并在每次有呼叫时将其上传到aws s3。
角度html代码:
<form>
<input type="file" name='avatar' id="imageUploadInput" accept="image/*" #profilePicInput (change)="imageUpload(profilePicInput.files)" >
</form>
角度ts文件:
imageUpload(fileList:FileList){
this.fileToUpload= fileList.item(0);
let formData = new FormData();
formData.append('avatar', this.fileToUpload, this.fileToUpload.name );
this.userService.uploadDpImage(formData, this.currentUser).subscribe(
(data:{Message:string, location:string})=>{
this.userProfile.dpLocation=data.location;
}
)
}
使用混合中间件的Nodejs路由:
router.post('/api/dpUpload/:displayName', middleWare.uploadToS3, (req,res)=>{
User.findOneAndUpdate(
{displayName: req.params.displayName},
{$set:{dpLocation: req.file.Location}},
(err,obj)=>{
if(!err){
return res.json({Message: "Image uploaded successfully", location:req.file.Location});
}else{
return res.json(err);
}
}
)
})
多人中间件:
//S3 storage options
var multer = require('multer');
var s3Storage = require('multer-sharp-s3');
var aws = require('aws-sdk');
var fs = require('fs');
var nodeuuid = require('node-uuid');
aws.config.update({Bucket:'yaavarum-kelir-dev', region: 'us-east-2', accessKeyId: 'XXXXXXXXXXXX', secretAccessKey: 'XXXXXXXXXXXXX'});
s3 = new aws.S3();
var storage = s3Storage({
s3,
Bucket: 'yaavarum-kelir-dev',
Key: `${'yaavarum-kelir-dev'}/DevContainer/${nodeuuid.v4()}`,
ACL: 'public-read',
});
middleWareObj.uploadToS3=multer({
storage: storage,
}).single('avatar');
我面临的问题是,每次来电后,图像都会以相同的名称上传到AWS s3,因此将替换图像而不是创建新文件。我不确定自己做错了什么。
我每次通过在“存储”变量中执行“ nodeuuid.v4()”来生成新名称。但是,这个问题仍在发生。
有人可以帮忙吗?
答案 0 :(得分:1)
我已解决此问题,感谢此答案:
https://stackoverflow.com/a/40950313/7999756
正确执行中间件:
middleWareObj.uploadToS3=multer({
storage: s3Storage({
s3,
Bucket: 'yaavarum-kelir-dev',
Key: function(req,file,cb){
console.log(file);
cb(null,nodeuuid.v4());
},
ACL: 'public-read',
}),
}).single('avatar');