javascript - 无法解构属性，因为它是未定义的

Question

我正在为 mssql 数据库使用 sequelize。
这是订单模型:

import Sequelize from "sequelize";
import { db } from "../config/database.js";

const Orders = db.define(
  "order",
  {
    customerName: {
      type: Sequelize.STRING,
    },
    customerAddress: {
      type: Sequelize.STRING,
    },
    phoneNumber: {
      type: Sequelize.STRING,
    },
    email: {
      type: Sequelize.STRING,
    },
  },
  {
    timestamps: false,
  }
);

export { Orders };

我将 http 帖子写成如下:

router.post("/orders", async (req, res) => {
  const { customerName, customerAddress, phoneNumber, email } = req.body;
  const order = await Orders.create({
    customerName,
    customerAddress,
    phoneNumber,
    email,
  });
  res.json(order);
}); 

但是当我尝试从 Postman 或我的前端发帖时，我收到以下消息:

 const { customerName, customerAddress, phoneNumber, email } = req.body;
          ^

TypeError: Cannot destructure property 'customerName' of 'req.body' as it is undefined.

这是我的前端:

function submit(e) {
    console.log(order);
    e.preventDefault();
    axios
      .post("http://localhost:3002/parts/orders", {
        customerName: order.customerName,
        customerAddress: order.customerAddress,
        phoneNumber: order.phoneNumber,
        email: order.email,
      })
      .then((res) => {
        console.log(res.data);
      });
  }

此函数由提交的表单使用。它将数据发送到/parts/orders 因为我改变了路由。我有 console.log(order) 所以我可以看到它确实是一个带有数据的订单。这是我在控制台中得到的，所以我想订单中有数据，req.body 也应该有数据。{customerName: "testman", customerAddress: "test street", phoneNumber: "testnumber", email: "test@gmail.com"}那么为什么我的数据库没有得到它应该得到的数据呢？

Answer 1

我没有app.user(express.json())在我的 index.js 文件中