vue+axios封装

1. 封装api.js

// 读取配置的根目录地址
const root = process.env.API_ROOT;
// 引入axios
let axios = require('axios');

function toType (obj) {
  return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
}
// 参数过滤函数
function filterNull (o) {
  for (let key in o) {
    if (o[key] === null) {
      delete o[key]
    }
    if (toType(o[key]) === 'string') {
      o[key] = o[key].trim()
    } else if (toType(o[key]) === 'object') {
      o[key] = filterNull(o[key])
    } else if (toType(o[key]) === 'array') {
      o[key] = filterNull(o[key])
    }
  }
  return o
}
/*
  接口处理函数
*/
function apiAxios (method, url, params, success, failure) {
  if (params) {
    params = filterNull(params)
  }
  axios({
    method: method,
    url: url,
    data: method === 'POST' || method === 'PUT' ? params : null,
    params: method === 'GET' || method === 'DELETE' ? params : null,
    baseURL: root,
    // 请求超时
    timeout: 30000,
    // 是否携带cookie信息
    withCredentials: false
  })
    .then(function (res) {
      if (res.data.success === true) {
        if (success) {
          success(res.data)
        }
      } else {
        if (failure) {
          failure(res.data)
        } else {
          console.error('error: ' + JSON.stringify(res.data));
          this.$message('error: ' + JSON.stringify(res.data));
        }
      }
    })
    .catch(function (err) {
      let res = err.response;
      if (err) {
        console.error('api error, HTTP CODE: ' + res.status);
        this.$message('api error, HTTP CODE: ' + res.status);
      }
    })
}

// 返回在vue模板中的调用接口
export default {
  get: function (url, params, success, failure) {
    return apiAxios('GET', url, params, success, failure)
  },
  post: function (url, params, success, failure) {
    return apiAxios('POST', url, params, success, failure)
  },
  put: function (url, params, success, failure) {
    return apiAxios('PUT', url, params, success, failure)
  },
  delete: function (url, params, success, failure) {
    return apiAxios('DELETE', url, params, success, failure)
  }
}

2. 加入vue全局变量

import api from './api/api';

/* api设置成全局属性 */
Vue.prototype.$ajax = api;

$ajax.get
$ajax.post
....