如何解决使用multerS3和NodeJs上传多个文件
我已经尝试了好几天,但似乎无法弄清楚我要去哪里。我的代码适用于本地文件夹中的单个文件上传,但是即使我分别在multer和控制器功能中使用upload.array()
和req.files
也似乎无法上传多个文件。而当我尝试在s3存储桶中上传单个/多个文件时,根本没有任何上传。在下面,我还将提供我的模型结构,以备不时之需。
:: UPDATE ::
文件正在s3存储桶中上传,但是数据库无法捕获文件路径。 imagePath
在数据库内部为空白
route.js:
const ProductController = require('./../controllers/productController');
const appConfig = require("./../config/appConfig");
const multer = require('multer');
const aws = require('aws-sdk');
const multerS3 = require('multer-s3');
const path = require('path');
const s3 = new aws.S3({ accessKeyId: "***",secretAccessKey: "***" });
var upload = multer({
storage: multerS3({
s3: s3,bucket: 'mean-ecom',metadata: function (req,file,cb) {
cb(null,{fieldName: file.originalname + path.extname(file.fieldname)});
},key: function (req,Date.now().toString())}})});
let setRouter = (app) => {
let baseUrl = appConfig.apiVersion;
app.post(baseUrl+'/post-product',upload.single('imagePath'),ProductController.postProduct)}
module.exports = {
setRouter: setRouter}
ProductController.postProduct:
const ProductModel = mongoose.model('Product')
let postProduct = (req,res) => {
let newProduct = new ProductModel({
imagePath: req.file && req.file.path})
newProduct.save((err,result) => {
if (err) { console.log('Error at saving new Product :: ProductController',err);
res.send(err);
} else {
console.log('Successfully saved new Product'); res.send(result) }
})}
productModel.js
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
let productSchema = new Schema(
{
imagePath: {
type: String,default: '' }})
mongoose.model('Product',productSchema);
解决方法
您需要做的第一件事是将模型的imagePath属性从一个字符串更改为一个字符串数组,以便可以存储多个图像
const Schema = mongoose.Schema;
let productSchema = new Schema(
{
imagePath: {type: Array}
})
mongoose.model('Product',productSchema)
然后,在路由器中,您应该使用upload.any()
(upload.array()
应该以相同的方式工作)。
最后,如果要将文件位置存储在模型数组中,则循环抛出文件以更新模型。
let postProduct = (req,res) => {
// We create a temporal array with the files locations
let files = [];
// We loop throw the req.files array and store their locations in the temporal files array
for (let i = 0; i < req.files.length; i++) {
let file = req.files[i].location
files.push(file)
}
let newProduct = new ProductModel({
imagePath: files}) //We create the model with the temp array
newProduct.save((err,result) => {
if (err) {
console.log('Error at saving new Product :: ProductController',err);
res.send(err);
}
else{
console.log('Successfully saved new Product');
res.send(result)
}
})