最近学习vue,需要后台模拟数据，从npm中搜索到axios-mock-adapter，即axios的模拟调试器，通过axios模拟调用后台，后台数据可以使用mock.js来造假数据。现将研究的做如下记录：
npm包链接

1.安装

1.1 npm方式    
    npm install axios-mock-adapter --save-dev
1.2 script引入方式
<script src="https://unpkg.com/axios-mock-adapter/dist/axios-mock-adapter.js"></script>
<script src="https://unpkg.com/axios-mock-adapter/dist/axios-mock-adapter.min.js"></script>

2.引入

2.1 es6  引入方式  import
import axios from 'axios';
import MockAdapter from 'axios-mock-adapter';
2.2 require  引入方式
var axios = require('axios');
var MockAdapter = require('axios-mock-adapter');

3.使用 example

首先创建一个实例
let mock = new MockAdapter(axios);

3.1模拟一个GET请求 ES6

//导入模块
import axios from 'axios';
import MockAdapter from 'axios-mock-adapter';
// 设置模拟调试器实例 
var mock = new MockAdapter(axios);
// 模拟任意GET请求到 /users 
//reply的参数为 (status, data, headers) 
mock.onGet('/users').reply(200, {
  users: [
    { id: 1, name: 'John Smith' }
  ]
});
axios.get('/users')
  .then(function(response) {
    console.log(response.data);
  });

3.2 模拟一个GET请求带参数的parameters

mock.onGet('/users', { params: { searchText: 'John' } }).reply(200, {
  users: [
    { id: 1, name: 'John Smith' }
  ]
});
 
axios.get('/users', { params: { searchText: 'John' } } )
  .then(function(response) {
    console.log(response.data);
  });
//在初始化模拟调试器的时候，设置几秒的延迟：响应的延迟 
var mock = new MockAdapter(axiosInstance, { delayResponse: 2000 });

3.3 传递一个function to reply

mock.onGet('/users').reply(function(config) {
  //config是axios config 
  //返回一个数组[status, data, headers] 
  return [200, {
    users: [
      { id: 1, name: 'John Smith' }
    ]
  }];
});

3.4 没有具体路径的时候

// 拒绝所有的 POST 请求，返回 HTTP 500 
mock.onPost().reply(500);

3.5 模拟一个put请求 body/data

mock.onPut('/product', { id: 4, name: 'foo' }).reply(204);

4.实例

let mock = new MockAdapter(axios);
// 模拟成功请求
mock.onGet('/success').reply(200, {
  msg: 'success'
});
// 模拟错误请求
mock.onGet('/error').reply(500, {
  msg: 'failure'
});
//模拟登录                POST
mock.onPost('/login').reply(config => {
  let {username, password} = JSON.parse(config.data);
  return new Promise((resolve, reject) => {
    let user = null;
    setTimeout(() => {
      let hasUser = LoginUsers.some(u => {
        if (u.username === username && u.password === password) {
          user = JSON.parse(JSON.stringify(u));
          user.password = undefined;
          return true;
        }
      });

      if (hasUser) {
        resolve([200, { code: 200, msg: '请求成功', user }]);
      } else {
        resolve([200, { code: 500, msg: '账号或密码错误' }]);
      }
    }, 1000);
  });
});
axios.post('/login', params).then(res => res.data);
//模拟批量删除                           GET
mock.onGet('/user/batchremove').reply(config => {
  let { ids } = config.params;
  ids = ids.split(',');
 ***_Users = _Users.filter(u => !ids.includes(u.id));***
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve([200, {
        code: 200,
        msg: '删除成功'
      }]);
    }, 500);
  });
});
axios.get(`${base}/user/batchremove`, { params: params });