WeChat applet supports cookie code implementation

The content of this article is about the code implementation of WeChat applet supporting cookies. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

weapp-cookie

One line of code allows the WeChat applet to support cookies, portal: github

Intro

WeChat’s native wx.request network request interface does not support traditional cookies, but sometimes our existing back-end interface does rely on cookies (such as server user login state), this library can be used One line of code implements the Cookie mechanism for your mini program to ensure that the cookie-based service session will not expire and shares the session mechanism with the web side

Featrues

• One line of code allows the applet to support cookies

• You can use the API to obtain and set cookies

• Support domain/path scope

Install

npm install weapp-cookie --save

# 将 npm 包复制到 vendor 文件夹，避免小程序可能不能找到文件（tips：使用 wepy/mpvue 等框架无需此步）
cp -rf ./node_modules/ ./vendor/

Usage

#Introduce one line of code in app.js in the root directory of the mini program.

// app.js
import './vendor/weapp-cookie/index'

// tips: 使用 wepy/mpvue 可以直接在入口 js 引入 weapp-cookie 模块
// import 'weapp-cookie'

App({
    onLaunch: function () { }
    // ...
})

The original wx.request calling method remains unchanged. After introduction, weapp-cookie will automatically proxy wx.request interface access at the bottom layer to support cookie storage and sending

// pages/home/index.js

Page({
    onLoad: function () {
        wx.request({
            url: 'https://example.com/login',
            data: {
                username: 'admin',
                password: '123456'
            },
            success: function (res) {
                /*
                 * 接口调用成功后 weapp-cookie 会自动保存后端发送的所有Cookie（比如：SessionID）
                 * 并在后续的所有请求中带上，以保证基于 cookie 的服务器会话机制不会失效，
                 * 实现与 web 端共用会话机制（无需再手动维护 3rd_session_key） 
                 */
            }
        })
    }
})

cookie operations Can be called through api

import cookies from 'weapp-cookie'

// 获取 cookie
let token = cookies.get('csrf_token', 'example.com')

// 设置 cookie
let cookie = cookies.set('uid', 100, { domain: 'example.com' })

// 删除 cookie
let isRemoved = cookies.remove('uid', 'example.com')

// 判断是否存在 cookie
let hasToken = cookies.has('uid', 'example.com')

// ... 详情请参考 Api

Api

CookieStore

import cookies from 'weapp-cookie'

/**
* 获取 cookie 值
* @param {String} name       cookie 名称
* @param {String} [domain]   指定域名（可选）
* @return {String}           cookie 值
*/
cookies.get(String name, String domain)

/**
* 设置 cookie
* @param {String}  name              cookie 名称
* @param {String}  value             cookie 值
* @param {Object}  options           cookie 选项
* @param {String}  options.domain    设置域名
* @param {String}  [options.path]      
* @param {Date}    [options.expires]
* @param {Number}  [options.maxAge]
* @param {Boolean} [options.httpOnly]
* @return {Cookie}           cookie 对象
*/
cookies.set(String name, String value, Object options)

/**
* 是否存在某个 cookie
* @param  {String}  name       cookie 名称
* @param  {String}  [domain]   指定域名（可选，不指定则任意域名包含名称为 name 的 cokkie 即为存在）
* @return {Boolean}            是否存在
*/
cookies.has(String name, String domain)

/**
* 删除 cookie
* @param  {Array}  name      cookie 键
* @param  {String} [domain]  指定域名（可选，不指定则删除所有域名中名称为 name 的 cookie）
* @return {Boolean}          是否删除成功
*/
cookies.remove(String name, String domain)

/**
* 获取 cookie 对象
* @param {String} name       cookie 名称
* @param {String} [domain]   指定域名（可选）
* @return {Cookie}           cookie 对象
*/
cookies.getCookie(String name, String domain)

/**
* 获取 cookies JSON对象
* @param  {String} [domain]  指定域名（可选，不指定则获取包含所有域名的 cookie 值对象）
* @return {Object}           cookie JSON对象
*/
cookies.getCookies(String domain)

/**
* 清除 cookie
* @param  {String} [domain]  指定域名（可选，不指定则清除所有域名 cookie）
* @return {Boolean}          是否清除成功
*/
cookies.clearCookies (domain)

/**
* 获取所有存储的域名和 cookies 结构
* @return {Object}   obj   结构JSON对象
*/
cookies.dir(domain)

Cookie

import cookies from 'weapp-cookie'

// 获取 cookie 对象
let cookie = cookies.getCookie('uuid', 'example.com')

// ===== cookie 属性 =====
cookie.name:        String
cookie.value:       String
cookie.domain:      String
cookie.path:        String
cookie.expires:     Date
cookie.maxAge:      Number
cookie.httpOnly:    Boolean

// ===== cookie 方法 =====

/**
 * 验证 cookie 是否过期
 * @return {Boolean} 是否过期
 */
cookie.isExpired()

/**
 * 验证 cookie 是否可持久化
 * @return {Boolean} 是否可持久化
 */
cookie.isPersistence()

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