vue3项目pinia的统一封装

vue3引入了新的vue.js状态的管理库，相较与以前的vuex，写法上更简单也更符合vue3的标准：

import { defineStore } from 'pinia'
import {ref} from 'vue
export const useCounterStore = defineStore('counter', () => {
  const count = ref(0)
  function increment() {
    count.value++
  }

  return { count, increment }
})

#在需要使用的文件
import { useCounterStore } from '@/stores/counter'
const counter = useCounterStore()
获取count =》 counter.count
获取increment方法，直接counter.increment()

但是，随着定义的状态管理增多，需要多次导入，所以这里记录下统一封装的使用：

1.stores下面定义index.js和modules文件夹分别创建cart.js和user.js

2.这里室stores/index.js的文件内容：

import { createPinia } from 'pinia'
import persist from 'pinia-plugin-persistedstate'
export * from './modules/user'
export * from './modules/cart'
const pinia = createPinia()
pinia.use(persist)
export default pinia

?3.在main.js中引入pinia

import { createApp } from 'vue'

import App from './App.vue'
import router from './router'
import pinia from './stores/index'
const app = createApp(App)
app.use(pinia)
app.use(router)

app.mount('#app')

4.下面室cart.js和user.js的内容

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

export const useCartStore = defineStore('cart', () => {
  const count = ref(0)
  const doubleCount = computed(() => count.value * 2)
  function increment() {
    count.value++
  }

  return { count, doubleCount, increment }
})

--------------------------------------------------------------
user.js
import { defineStore } from 'pinia'
import { ref } from 'vue'
export const useUserStore = defineStore(
  'big-user',
  () => {
    const token = ref('')
    const setToken = (data) => {
      token.value = data
    }
    const removeToken = () => {
      token.value = ''
    }
    return {
      token,
      setToken,
      removeToken
    }
  },
  {
    persist: true
  }
)

5.然后在需要使用的方法就可以直接其定义的变量和方法

import { useUserStore } from '@/stores'
import {userCartStore} from '@stores
const userStore = useUserStore()
const useCart = userCartStore()

#注：pinia的持久化存储的插件?pnpm add pinia-plugin-persistedstate -D

其配置可以参照官方文件，Home | pinia-plugin-persistedstate