如何使用axios到模拟/伪造后端API

Question

我想使用axios向模拟/假后端API发出获取异步请求

这是代码：src / fakeBackend / feedbacks.js

const { createGuid } = require('../utils/guid')
const { users } = require('./users')

const feedback = {
  extern: [
    {
      id: createGuid(),
      userId: users[0].id,
      message: '',
      date: new Date(2016, 2, 3).valueOf(),
    },
    {
      id: createGuid(),
      userId: users[4].id,
      message: '',
      date: new Date(2018, 10, 2).valueOf(),
    },
  ],
}

src / fakeBackend / mock.js

const axios = require("axios");
const { parse } = require("url");
const MockAdapter = require("axios-mock-adapter");

const { feedback } = require("./feedbacks");

const instance = axios.create();
const mock = new MockAdapter(instance);

const extractData = ({ data, params, url }) => {
  const { query } = parse(url, true);
  const parsedData = data && JSON.parse(data);

  return { ...query, ...params, ...parsedData };
};

mock.onGet(/feedback.*/).reply(config => {
  let parsed;

  try {
    parsed = extractData(config);
  } catch (e) {
    return [400, { message: "incorrect data format" }];
  }

  if (!parsed.product) {
    return [400, { message: "Product id not specified" }];
  }

  const feedbackForProduct = feedback[parsed.product];

  if (feedbackForProduct) {
    return [200, { feedback: feedbackForProduct }];
  }

  return [404, { message: "No such product exists." }];
});

module.exports = { axios: instance };

src/client.js

我在函数getFeedbackByProductViewData中使用axios进行请求

    const { axios } = require("./fakeBackend/mock");

    const getFeedbackByProductViewData = async (product) => {
      let feedback;
      await axios.get('/feedback', {
        params: {
          product: product
        }
      })
        .then((response) => {
          console.log(response);
          feedback = response.data;
        }, (error) => {
          console.log(error);
        });
      return feedback;
    };
    module.exports = { getFeedbackByProductViewData };

为什么Axios收到呼叫会返回404错误？我认为网址不正确。如何制作正确的网址来模拟假的后端？