因此，当我尝试为电子商务网站项目添加产品时，除了图像之外，该产品的所有详细信息都已成功传输到 MongoDB，而我得到的是一个空数组。
这是productController.js
import { v2 as cloudinary } from "cloudinary"
import productModel from "../models/productModel.js"
//function for adding product
const addProduct = async (req, res) => {
try {
//getting product details
const { name, description, price, category, subCategory, sizes, bestseller } = req.body
//getting product images
const image1 = req.files.image1 && req.files.image1[0]
const image2 = req.files.image2 && req.files.image2[0]
const image3 = req.files.image3 && req.files.image3[0]
const image4 = req.files.image4 && req.files.image4[0]
const images = [image1, image2, image3, image4].filter((item)=> item !== undefined)
let imagesUrl = await Promise.all(
images.map(async (item) => {
let result = await cloudinary.uploader.upload(item.path,{resource_type: 'image'});
return result.secure_url
})
)
const productData = {
name,
description,
category,
price: Number(price),
subCategory,
bestseller: bestseller === "true" ? true : false,
sizes: JSON.parse(sizes),
image: imagesUrl,
date: Date.now()
}
console.log(productData);
const product = new productModel(productData);
await product.save()
res.json({success:true, message:"Product Added"})
} catch (error) {
console.log(error)
res.json({success:false, message:error.message})
}
}
//function for listing products
const listProducts = async (req, res) => {
}
//function for removing product
const removeProduct = async (req, res) => {
}
//function for single product info
const singleProduct = async (req, res) => {
}
export {listProducts, addProduct, removeProduct, singleProduct}
这是 multer.js
import multer from "multer";
const storage = multer.diskStorage({
filename:function(req, file,callback){
callback(null, file.originalname)
}
})
const upload = multer({storage})
export default upload
这是productModel.js
import mongoose from "mongoose";
const productSchema = new mongoose.Schema({
name: {type: String, required: true},
description: {type :String, required: true},
price: {type: Number, required: true},
image: {type: Array, required:true},
category: {type: String, required:true},
subCategory: {type: String, required:true},
sizes: {type: Array, required:true},
bestseller: {type: Boolean},
date: {type: Number, required:true},
})
const productModel = mongoose.models.product || mongoose.model("product", productSchema)
// ^^ If the product model is available, it gets assigned to the variable. Else, a new model is created.
export default productModel
最后，这是productRoute.js
import express from 'express'
import {listProducts, addProduct, removeProduct, singleProduct} from '../controllers/productController.js'
import upload from '../middleware/multer.js';
const productRouter = express.Router();
productRouter.post('/add',
upload.fields([
{name:'image1', maxCount:1}, {name:'image2', maxCount:1}, {name:'image3', maxCount:1},
{name:'image4', maxCount:1}
]), addProduct);
productRouter.post('/remove',removeProduct);
productRouter.post('/single',singleProduct);
productRouter.get('/list',listProducts)
export default productRouter
以下是Postman和MongoDB的图像截图
我首先验证了该文件的存在。它在我的桌面上。我知道文件路径不会错，因为我正在使用 Postman 的浏览按钮（文件选择器）。
为了调试，我将此代码添加到 productsController.js 中的 addProduct 函数中
console.log("Files received:", req.files);
这是我在终端中得到的：
{ name: '测试名称', 描述：'测试描述'， 类别：“男士”， 价格：10， 子类别：“上衣”， 畅销书：真实， 尺寸：['M']， 图像： []， 日期：1736191821156 } 请求文件：[对象：空原型] {} 请求正文：[对象：空原型] { name: '测试名称', 描述：'测试描述'， 价格：'10'， 畅销书：“真实”， 类别：“男士”， 子类别：“上衣”， 尺寸：'[“M”]' }
这确认了 req.files 为空
我还使用了 console.log() 来检查 multer 中间件是否正在执行，确实如此。
我也重启了服务器，但还是不行