Prefacio:
path-to-regexp La función de este método es convertir una cadena en una expresión regular. Generalmente, usamos esto cuando usamos enrutamiento de coincidencia dinámica.
1. Introduzca la ruta a la expresión regular, haga clic en mí para ver más
rutaHaciaRegexp()
pathToRegexp('/foo/:bar')
打印结果:
/^/foo/((?:[^/]+?))(?:/(?=$))?$/i
ejecutivo()
Función: haga coincidir si la dirección URL coincide con la regla.
analizar gramaticalmente()
Función: analiza la parte del parámetro (: id) en la cadena de URL.
compilar()
Función: Rellene rápidamente el valor del parámetro de la cadena de URL.
var pathToRegexp = require('path-to-regexp')
var url = '/user/:id/:name'
var data = {id: 10001, name: 'bob'}
console.log(pathToRegexp.compile(url)(data))
打印结果:
/user/10001/bob
2. Use la ruta a la expresión regular para informar errores y resolver la situación
Error:
Solución
import pathToRegexp from 'path-to-regexp' se cambia a:
import * as pathToRegexp from 'path-to-regexp'
3. Vuelva a empaquetar los componentes relacionados en vue3+vite
Código fuente de Vue2:
<template>
<el-breadcrumb class="app-breadcrumb" separator="/">
<transition-group name="breadcrumb">
<el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
<span v-if="item.redirect==='noRedirect'||index==levelList.length-1" class="no-redirect"><i :class="item.meta.icon"></i><span style="margin-left:5px;">{
{ item.meta.title }}</span></span>
<span v-else><i :class="item.meta.icon"></i><a @click.prevent="handleLink(item)" style="margin-left:5px;">{
{ item.meta.title }}</a></span>
</el-breadcrumb-item>
</transition-group>
</el-breadcrumb>
</template>
<script>
// import pathToRegexp from 'path-to-regexp'
export default {
data() {
return {
levelList: null
}
},
watch: {
$route(route) {
if (route.path.startsWith('/redirect/')) {
return
}
this.getBreadcrumb()
}
},
created() {
this.getBreadcrumb()
},
methods: {
getBreadcrumb() {
let matched = this.$route.matched.filter(item => item.meta && item.meta.title)
const first = matched[0]
if (!this.isDashboard(first)) {
}
this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
},
isDashboard(route) {
const name = route && route.name
if (!name) {
return false
}
return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
},
pathCompile(path) {
const { params } = this.$route
//pathToRegexp 把字符串转为正则表达式
//pathToRegexp.compile() 快速填充 url 字符串的参数值
var toPath = pathToRegexp.compile(path)
return toPath(params)
},
handleLink(item) {
const { redirect, path } = item
if (redirect) {
this.$router.push(redirect)
return
}
this.$router.push(this.pathCompile(path))
}
}
}
</script>
<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
display: inline-block;
font-size: 14px;
line-height: 50px;
margin-left: 8px;
.no-redirect {
color: #97a8be;
cursor: text;
}
}
</style>
El último código fuente de vue3:
<template>
<el-breadcrumb class="app-breadcrumb" separator="/">
<transition-group name="breadcrumb">
<el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
<span v-if="item.redirect==='noRedirect'||index==levelList.length-1" class="no-redirect"><i :class="item.meta.icon"></i><span style="margin-left:5px;">{
{ item.meta.title }}</span></span>
<span v-else><i :class="item.meta.icon"></i><a @click.prevent="handleLink(item)" style="margin-left:5px;">{
{ item.meta.title }}</a></span>
</el-breadcrumb-item>
</transition-group>
</el-breadcrumb>
</template>
<script>
import * as pathToRegexp from 'path-to-regexp'
import {
reactive,
watch,
toRefs,
getCurrentInstance,
onMounted
} from 'vue'
export default {
setup(){
/************************ hx-定义数据data(START) ************************/
const data = reactive({
levelList: null
})
/************************ hx-定义数据data(END) ************************/
/************************ hx-生命周期(START) ************************/
const { proxy } = getCurrentInstance()
onMounted(() => {
getBreadcrumb()
})
const router = useRouter()
watch(() => router.currentRoute.value.path,(toPath) => {
//要执行的方法
if (toPath.startsWith('/redirect/')) {
return
}
getBreadcrumb()
},{immediate: true,deep: true})
/************************ hx-生命周期(END) ************************/
/************************ hx-methods(START) ************************/
function getBreadcrumb() {
let matched = router.matched.filter(item => item.meta && item.meta.title)
const first = matched[0]
if (!isDashboard(first)) {}
data.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
}
function isDashboard(route) {
const name = route && route.name
if (!name) {
return false
}
return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
}
function pathCompile(path) {
const { params } = route
debugger
//pathToRegexp 把字符串转为正则表达式
//pathToRegexp.compile() 快速填充 url 字符串的参数值
var toPath = pathToRegexp.compile(path)
return toPath(params)
}
function handleLink(item) {
const { redirect, path } = item
if (redirect) {
router.push(redirect)
return
}
router.push(pathCompile(path))
}
/************************ hx-methods(END) ************************/
return {
//数据
...toRefs(data),
//methods
handleLink
}
}
}
</script>
<style lang="scss" scoped>
.app-breadcrumb.el-breadcrumb {
display: inline-block;
font-size: 14px;
line-height: 50px;
margin-left: 8px;
.no-redirect {
color: #97a8be;
cursor: text;
}
}
</style>