学习笔记 | 微信小程序项目day02

今日学习内容

• 安装uni-ui跟@uni-helper/uni-ui-types
• 配置pinia持久化
• 请求工具类的拦截器
• 请求工具类的请求函数

安装uni-ui跟@uni-helper/uni-ui-types

npm install -g cnpm --registry=https://registry.npmmirror.com
npm set registry https://registry.npmmirror.com
npm i -g pnpm
npm i @dcloudio/uni-ui

//配置ts类型
pnpm i -D @uni-helper/uni-ui-types

配置uni-ui自动导入

设置pinia持久化

1、新建stores/index.ts

import { createPinia } from 'pinia'
import persist from 'pinia-plugin-persistedstate'

// 创建 pinia 实例
const pinia = createPinia()
// 使用持久化存储插件
pinia.use(persist)

// 默认导出，给 main.ts 使用
export default pinia

// 模块统一导出
export * from './modules/member'

2、在新建store的时候加上持久化的配置

import { defineStore } from 'pinia'
import { ref } from 'vue'

// 定义 Store
export const useMemberStore = defineStore(
  'member',
  () => {
    // 会员信息
    const profile = ref<any>()

    // 保存会员信息，登录时使用
    const setProfile = (val: any) => {
      profile.value = val
    }

    // 清理会员信息，退出时使用
    const clearProfile = () => {
      profile.value = undefined
    }

    // 记得 return
    return {
      profile,
      setProfile,
      clearProfile,
    }
  },
  // TODO: 持久化
  {
    //网页端的写法
    // persist: true,
    persist: {
      storage: {
        getItem(key) {
          return uni.getStorageSync(key)
        },
        setItem(key, value) {
          uni.setStorageSync(key, value)
        },
      },
    },
  },
)

请求工具类的拦截器

配置拦截器并添加

import { useMemberStore } from "@/stores"



//api请求地址
const apiUrl = 'https://pcapi-xiaotuxian-front-devtest.itheima.net'


//初始化拦截器配置
const httpInterceptor = {
  //拦截前触发
  invoke(options: UniApp.RequestOptions) {
    //如果不是http请求开头的则需要拼接apiUrl
    if (!options.url.startsWith('http')) {
      options.url = apiUrl + options.url
    }
    //配置请求超时时间
    options.timeout = 10 * 1000
    //添加请求头

    options.header = {
      ...options.header,
      'source-client': 'miniapp'
    }

    //添加token
    const memberStore = useMemberStore()
    const token = memberStore.profile?.token
    if (token) {
      options.header.Authorization = token
    }


  }
}

//添加拦截器  request uploadFile   httpInterceptor是配置
uni.addInterceptor('request', httpInterceptor)
uni.addInterceptor('uploadFile', httpInterceptor)

使用

<script setup lang="ts">
import { useMemberStore } from '@/stores'
import '@/utils/http'

const memberStore = useMemberStore()



const getData = () => {
  uni.request({
    method: 'GET',
    url: '/category/top',
    header: {

    },
  })
}

</script>

<template>
  <view class="my">
    <view>会员信息：{{ memberStore.profile }}</view>
    <button @tap="
      memberStore.setProfile({
        nickname: '黑马先锋',
        token: '123'
      })
      " size="mini" plain type="primary">
      保存用户信息
    </button>
    <button @tap="memberStore.clearProfile()" size="mini" plain type="warn">清理用户信息</button>
    <button @tap="getData()" size="mini" plain type="warn">发起请求</button>

  </view>
</template>

<style lang="scss">
//
</style>

请求工具类的请求函数

import { useMemberStore } from '@/stores'

//api请求地址
const apiUrl = 'https://pcapi-xiaotuxian-front-devtest.itheima.net'

//初始化拦截器配置
const httpInterceptor = {
  //拦截前触发
  invoke(options: UniApp.RequestOptions) {
    //如果不是http请求开头的则需要拼接apiUrl
    if (!options.url.startsWith('http')) {
      options.url = apiUrl + options.url
    }
    //配置请求超时时间
    options.timeout = 10 * 1000
    //添加请求头

    options.header = {
      ...options.header,
      'source-client': 'miniapp',
    }

    //添加token
    const memberStore = useMemberStore()
    const token = memberStore.profile?.token
    if (token) {
      options.header.Authorization = token
    }
  },
}

//添加拦截器  request uploadFile   httpInterceptor是配置
uni.addInterceptor('request', httpInterceptor)
uni.addInterceptor('uploadFile', httpInterceptor)


//配置请求函数


//step.1 先定义出与后端约定返回的数据格式
interface Data<T> {
  code: string
  msg: string
  result: T
}

//step.2 定义出http 使用泛型
export const http = <T>(options: UniApp.RequestOptions) => {
  //返回Promise
  return new Promise<Data<T>>((resolve, reject) => {
    uni.request({
      ...options,
      //step.3 响应成功
      success(res) {
        //如果状态码是2xx || 3xx 才会进入resolve
        if (res.statusCode >= 200 && res.statusCode < 300) {
          resolve(res.data as Data<T>)
        } else if (res.statusCode === 401) {
          //清理用户信息并跳转到登录页
          const memberStore = useMemberStore()
          memberStore.clearProfile()

          //跳转登录页
          uni.navigateTo({ url: '/pages/login/login' })
          reject(res)
        } else {
          //其他错误，进行提示
          uni.showToast({
            title: (res.data as Data<T>).msg || '请求错误',
            icon: 'none',
            mask: true
          })
          reject(res)
        }

      },
      //step.4 响应失败
      fail(err) {
        reject(err)
        uni.showToast({
          icon: 'none',
          title: '网络错误，换个网络试试'
        })
      }
    })
  })
}

测试请求路径不存在

<script setup lang="ts">
import { useMemberStore } from '@/stores'
import { http } from '@/utils/http'

const memberStore = useMemberStore()

const getData = async () => {
  const res = await http<string[]>({
    method: 'GET',
    url: '/category/top123',
    header: {},
  })
  console.log(res)
}
</script>

<template>
  <view class="my">
    <view>会员信息：{{ memberStore.profile }}</view>
    <button @tap="
      memberStore.setProfile({
        nickname: '黑马先锋',
        token: '123',
      })
      " size="mini" plain type="primary">
      保存用户信息
    </button>
    <button @tap="memberStore.clearProfile()" size="mini" plain type="warn">清理用户信息</button>
    <button @tap="getData()" size="mini" plain type="warn">发起请求</button>
  </view>
</template>

<style lang="scss">
//
</style>