Question

Product create - Test 我能够创建一个类别，但是在创建产品时，我使用邮递员对其进行了测试，并显示错误：“”，然后我添加了要求显示所有字段的代码。它们都是，除了消息不断弹出错误：“所有字段都是必需的”。我已经尝试了以下所有解决方案，但是没有一个对我有用吗？

const formidable = require("formidable");
const _ = require("lodash");
const fs = require("fs");
const Product = require("../models/product");
const { errorHandler } = require("../helpers/dbErrorHandler");

exports.productById = (req, res, next, id) => {
    Product.findById(id).exec((error, product) => {
        if (error || !product) {
            return res.status(400).json({
                error: "Product not found"
            });
        }
        req.product = product;
        next();
    });
};

exports.read = (req, res) => {
    req.product.photo = undefined;
    return res.json(req.product);
};

exports.create = (req, res) => {
    let form = new formidable.IncomingForm();
    form.keepExtensions = true;
    form.parse(req, (error, fields, files) => {
        if (error) {
            return res.status(400).json({
                error: "Image could not be uploaded"
            });
        }
        // check for all fields
        const {
            name,
            description,
            price,
            category,
            quantity,
            shipping
        } = fields;

        if (
            !name ||
            !description ||
            !price ||
            !category ||
            !quantity ||
            !shipping
        ) {
            return res.status(400).json({
                error: "All fields are required"
            });
        }

        let product = new Product(fields);

        // 1kb = 1000
        // 1mb = 1000000

        if (files.photo) {
            // console.log("FILES PHOTO: ", files.photo);
            if (files.photo.size > 1000000) {
                return res.status(400).json({
                    error: "Image should be less than 1mb in size"
                });
            }
            product.photo.data = fs.readFileSync(files.photo.path);
            product.photo.contentType = files.photo.type;
        }

        product.save((error, result) => {
            if (error) {
                return res.status(400).json({
                    error: errorHandler(error)
                });
            }
            res.json(result);
        });
    });
};

exports.remove = (req, res) => {
    let product = req.product;
    product.remove((error, deletedProduct) => {
      if (error) {
          return res.status(400).json({
              error: errorHandler(error)
          });
      }
      res.json({
          "message": "Product deleted successfully"
      });
    });
};

Answer 1

为什么不控制台登录每个要求，例如

exports.productById = (req, res, next, id) => {
    console.log(req.body);
};

exports.read = (req, res) => {
    console.log(req.body);
};

exports.create = (req, res) => {
    console.log(req.body);
};

exports.remove = (req, res) => {
    console.log(req.body);
};

您将清楚了解后端是否实际收到您的请求。

Answer 2

 if (
            !name ||
            !description ||
            !price ||
            !category ||
            !quantity ||
            !shipping
        ) {
            return res.status(400).json({
                error: "All fields are required"
            });
        }

您从邮递员发送了错误的运输邮件，显然它将返回400状态，使它成为

 if (
            !name ||
            !description ||
            !price ||
            !category ||
            !quantity ||
           shipping!== true || shipping !==false //something like that(or use something from formidable)
        ) {
            return res.status(400).json({
                error: "All fields are required"
            });
        }
    ```

Answer 3

您的问题是在邮递员中设置内容类型。您将表单数据发送到服务器，但服务器未对它进行解码。默认情况下，您的服务器获取x-www-form-urlencoded，如果在x-www-form-urlencoded上设置邮递员，则问题就不存在了。您必须使用表格数据上传文件

使用Postman进行Nodejs CRUD +测试

3 个答案: