axios post，get 封装，支持数据类型

import axios from 'axios'
import store from '../vuex/store'
import router from '../router/index'
import { stringify } from 'qs'  //qs模块

// axios 配置
axios.defaults.timeout = 5000;
axios.defaults.baseURL = '';

// http request 拦截器
axios.interceptors.request.use(
  config => {
    if (store.state.token) {
      config.headers.Authorization = `token ${store.state.token}`;
    }
    return config;
  },
  err => {
    return Promise.reject(err);
  });

// http response 拦截器
axios.interceptors.response.use(
  response => {
    return response;
  },
  error => {
    if (error.response) {
      switch (error.response.status) {
        case 401:
          // 401 清除token信息并跳转到登录页面
          //store.commit(types.LOGOUT);
          router.replace({
            path: 'login',
            query: {redirect: router.currentRoute.fullPath}
          });
          break;
        case 403:
          break;
        case 504:
          break;
        case 500:
          //store.dispatch(types.AJAX_ERROR,500);
          break;
        case 404:
          //store.dispatch(types.AJAX_ERROR,404);
          break;
      }
    }
    console.log(JSON.stringify(error));//console : Error: Request failed with status code 402
    return Promise.reject(error.response.data)
  });

/*{
  type:type,
    params:params,
}*/
// 封装请求
export function fetch (url, options) {
  var opt = options || {}
  return new Promise((resolve, reject) => {
    axios({
      method: opt.type || 'post',
      url: url,
      params: opt.params || {},
      // 判断是否有自定义头部，以对参数进行序列化。不定义头部，默认对参数序列化为查询字符串。
      data: (opt.headers ? opt.data : stringify(opt.data)) || {},
      responseType: opt.dataType || 'json',
      // 设置默认请求头
      headers: opt.headers || {'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'}
    }).then(response => {
      if (response.data.code === 0) {
        resolve(response.data)
      } else if (response.data.code === '000') {
        resolve(response.data)
      } else {
        reject(response.data)
        //store.commit('SET_LOADING', false)
      }
    }).catch(error => {
      console.log(error)
      reject(error)
      //store.commit('SET_LOADING', false)
    })
  })
}

export default axios;

使用axios封装的功能

import { fetch } from '../../util/api'

//用户登录
export const userLogin= (data)=> fetch('/api/users/api/userLogin',{
  data,
  'type':'post'
});