微信小程序-封装通用模块

封装toast和modal

/** 提示消息框 */
function toast({title = "数据加载中",icon = "none",duration = 2000,mask = true,
}) {wx.showToast({title,icon,duration,mask,})
}/** 模拟对话框 */
function modal(opts = {}) {const defaultOpts = {title: "提示",content: "您确定执行该操作吗？",confirmColor: "#f3514f",}return new Promise((resolve) => {const options = Object.assign({}, defaultOpts, opts)wx.showModal({...options,complete({ confirm, cancel }) {confirm && resolve(true)cancel && resolve(false)},})})
}// 挂载到 wx 全局对象上
wx.toast = toast
wx.modal = modalexport { toast, modal }

封装storage

/** 同步存储数据 */
export const setStorage = (key, data) => {try {wx.setStorageSync(key, data)} catch (e) {console.error(`存储指定 ${key} 数据时发生了异常`, e)}
}/** 同步获取数据 */
export const getStorage = (key) => {try {const value = wx.getStorageSync(key)if (value) {return value}} catch (e) {console.error(`获取指定 ${key} 数据时发生了异常`, e)}
}/** 同步删除指定数据 */
export const removeStorage = (key) => {try {wx.removeStorageSync(key)} catch (e) {console.error(`移除指定 ${key} 数据时发生了异常`, e)}
}/** 同步清空全部数据 */
export const clearStorage = () => {try {wx.clearStorageSync()} catch (e) {console.error(`清空数据发生了异常`, e)}
}/** 异步存储数据 */
export const asyncSetStorage = (key, data) => {return new Promise((resolve) => {wx.setStorage({key,data,complete(res) {resolve(res)},})})
}/** 异步获取指定数据 */
export const asyncGetStorage = (key) => {return new Promise((resolve) => {wx.getStorage({key,complete(res) {resolve(res)},})})
}/** 异步删除指定数据 */
export const asyncRemoveStorage = (key) => {return new Promise((resolve) => {wx.removeStorage({key,complete(res) {resolve(res)},})})
}/** 异步清空全部数据 */
export const asyncClearStorage = () => {return new Promise((resolve) => {wx.clearStorage({key,complete(res) {resolve(res)},})})
}

封装网络请求

request.js

class WxRequest {/** 默认请求参数 */defaultOpts = {baseURL: "https://gmall-prod.atguigu.cn/mall-api", //域名url: "", // 请求路径data: null, // 请求参数method: "GET", // 请求方法header: {// 请求头"Content-type": "application/json",},timeout: 60000, // 超时时间isLoading: true, // 是否显示loading}/** 拦截器 */interceptors = {// 请求拦截器，发送请求前，可以对请求参数进行更改request: (config) => config,// 响应拦截器，服务器响应后，可以对数据进行逻辑处理response: (response) => response,}/** 数组，存放请求标识 */queue = []constructor(options = {}) {this.defaultOpts = Object.assign({}, this.defaultOpts, options)}request(options) {this.timeId && clearTimeout(this.timeId)options.url = this.defaultOpts.baseURL + options.urloptions = { ...this.defaultOpts, ...options }// 使用请求拦截器options = this.interceptors.request(options)// 如果数组为空，则显示loadingif (options.isLoading) {this.queue.length === 0 && this.showLoading()this.queue.push("request")}return new Promise((resolve, reject) => {wx.request({...options,success: (res) => {console.log("success", res)if (res.statusCode === 200) {// 第一个参数：目标对象；第二个参数：服务器响应数据；第三个参数：请求配置const mergeRes = Object.assign({}, res, {config: options,isSuccess: true,})resolve(this.interceptors.response(mergeRes))} else {wx.showToast({title: "服务器异常",icon: "error",})}},fail: (err) => {console.log("fail", err)const mergeErr = Object.assign({}, err, {config: options,isSuccess: false,})reject(this.interceptors.response(mergeErr))},complete: () => {if (options.isLoading) {this.queue.pop()this.queue.length === 0 && this.queue.push("request")this.timeId = setTimeout(() => {this.queue.pop()this.queue.length === 0 && this.hideLoading()clearTimeout(this.timeId)}, 1)}},})})}/** 封装GET请求 */get(url, data = {}, config = {}) {return this.request(Object.assign({ url, data, method: "GET" }, config))}/** 封装POST请求 */post(url, data = {}, config = {}) {return this.request(Object.assign({ url, data, method: "POST" }, config))}/** 并发请求 */all(...promise) {console.log("all", promise)return Promise.all(promise)}showLoading() {wx.showLoading({title: "加载中",})}hideLoading() {wx.hideLoading()}
}export default WxRequest

http.js

import WxRequest from "./request"// 实例化
const instance = new WxRequest()// 配置请求拦截器
instance.interceptors.request = (config) => {const token = wx.getStorageSync("token")if (token) {config.header["token"] = token}return config
}
// 配置响应拦截器
instance.interceptors.response = async (response) => {const { isSuccess, data } = responseif (!isSuccess) {wx.showToast({title: "网络异常请重试",icon: "error",})return response}switch (data.code) {case 200:return datacase 208:wx.showModal({title: "提示",content: "鉴权失败，请重新登录",complete: (res) => {if (res.confirm) {wx.clearStorage()// TODO 跳转登录页面}},})return Promise.reject(response)default:wx.showToast({title: "程序出现异常",icon: "error",})return Promise.reject(response)}
}export default instance