vueパッケージaxios

import axios from 'axios'
var root = 'http://127.0.0.1:8081'
axios.defaults.headers.post['content-Type'] = 'application/json;charset=UTF-8';

//          JS
function toType(obj) {
    return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase()
}
/**       */
function filterNull(o) {
    for (var 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
}
/**  headers,      header  */
function setHeaders(headers) {
    axios.defaults.headers.school_id = headers.school_id;
    axios.defaults.headers.token = headers.token;
}


//  success failure     ，          
function apiAxios(method, url, headers, params, success, failure) {
    if (headers) {
        headers = filterNull(headers);
        setHeaders(headers)
    }

    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,
        withCredentials: false
    })
        .then(function (res) {
            if (res.data.error_code === 1000) {
                if (success) {
                    //  success(data)  
                    success(res.data)
                }
            } else {
                failure(res.data)
            }
        })
        .catch(function (err) {
            let res = err.response
            if (err) {
                window.alert('api error, HTTP CODE: ' + res.status)
            }
        })
}

//    vue        
export default {
    get: function (url, headers, params, success, failure) {
        return apiAxios('GET', url, headers, params, success, failure)
    },
    post: function (url, headers, params, success, failure) {
        return apiAxios('POST', url, headers, params, success, failure)
    },
    put: function (url, headers, params, success, failure) {
        return apiAxios('PUT', url, headers, params, success, failure)
    },
    delete: function (url, headers, params, success, failure) {
        return apiAxios('DELETE', url, headers, params, success, failure)
    }
}