效果展示

新建interceptors文件夹

新建文件route.ts

/**
 * 路由拦截，通常也是登录拦截
 * 可以设置路由白名单，或者黑名单，看业务需要选哪一个
 * 我这里应为大部分都可以随便进入，所以使用黑名单
 */
import { getNeedLoginPages, needLoginPages as _needLoginPages } from '@/utils'

// TODO Check
const loginRoute = '/pages/login/login'

const isLogined = () => {
  return false
}

const isDev = true

// 黑名单登录拦截器 - （适用于大部分页面不需要登录，少部分页面需要登录）
const navigateToInterceptor = {
  // 注意，这里的url是 '/' 开头的，如 '/pages/index/index'，跟 'pages.json' 里面的 path 不同
  invoke({ url }: { url: string }) {
    // console.log(url) // /pages/route-interceptor/index?name=feige&age=30
    const path = url.split('?')[0]
    let needLoginPages: string[] = []
    // 为了防止开发时出现BUG，这里每次都获取一下。生产环境可以移到函数外，性能更好
    if (isDev) {
      needLoginPages = getNeedLoginPages()
    } else {
      needLoginPages = _needLoginPages
    }
    const isNeedLogin = needLoginPages.includes(path)
    if (!isNeedLogin) {
      return true
    }
    const hasLogin = isLogined()
    if (hasLogin) {
      return true
    }
    const redirectRoute = `${loginRoute}?redirect=${encodeURIComponent(url)}`
    uni.navigateTo({ url: redirectRoute })
    return false
  },
}

export const routeInterceptor = {
  install() {
    uni.addInterceptor('navigateTo', navigateToInterceptor)
    uni.addInterceptor('reLaunch', navigateToInterceptor)
    uni.addInterceptor('redirectTo', navigateToInterceptor)
    uni.addInterceptor('switchTab', navigateToInterceptor)
  },
}

新建index.ts

export { routeInterceptor } from './route'

新建utils文件夹

新建index.ts文件

import { pages, subPackages, tabBar } from '@/pages.json'

/** 判断当前页面是否是tabbar页  */
export const getIsTabbar = () => {
  if (!tabBar) {
    return false
  }
  if (!tabBar.list.length) {
    // 通常有tabBar的话，list不能有空，且至少有2个元素，这里其实不用处理
    return false
  }
  // getCurrentPages() 至少有1个元素，所以不再额外判断
  const lastPage = getCurrentPages().at(-1)
  const currPath = lastPage.route
  return !!tabBar.list.find((e) => e.pagePath === currPath)
}

/**
 * 获取当前页面路由的 path 路劲和 redirectPath 路径
 * path 如 ‘/pages/login/index’
 * redirectPath 如 ‘/pages/demo/base/route-interceptor’
 */
export const currRoute = () => {
  // getCurrentPages() 至少有1个元素，所以不再额外判断
  const lastPage = getCurrentPages().at(-1)
  const currRoute = (lastPage as any).$page
  // console.log('lastPage.$page:', currRoute)
  // console.log('lastPage.$page.fullpath:', currRoute.fullPath)
  // console.log('lastPage.$page.options:', currRoute.options)
  // console.log('lastPage.options:', (lastPage as any).options)
  // 经过多端测试，只有 fullPath 靠谱，其他都不靠谱
  const { fullPath } = currRoute as { fullPath: string }
  // console.log(fullPath)
  // eg: /pages/login/index?redirect=%2Fpages%2Fdemo%2Fbase%2Froute-interceptor (小程序)
  // eg: /pages/login/index?redirect=%2Fpages%2Froute-interceptor%2Findex%3Fname%3Dfeige%26age%3D30(h5)
  return getUrlObj(fullPath)
}

const ensureDecodeURIComponent = (url: string) => {
  if (url.startsWith('%')) {
    return ensureDecodeURIComponent(decodeURIComponent(url))
  }
  return url
}
/**
 * 解析 url 得到 path 和 query
 * 比如输入url: /pages/login/index?redirect=%2Fpages%2Fdemo%2Fbase%2Froute-interceptor
 * 输出: {path: /pages/login/index, query: {redirect: /pages/demo/base/route-interceptor}}
 */
export const getUrlObj = (url: string) => {
  const [path, queryStr] = url.split('?')
  // console.log(path, queryStr)

  if (!queryStr) {
    return {
      path,
      query: {},
    }
  }
  const query: Record<string, string> = {}
  queryStr.split('&').forEach((item) => {
    const [key, value] = item.split('=')
    // console.log(key, value)
    query[key] = ensureDecodeURIComponent(value) // 这里需要统一 decodeURIComponent 一下，可以兼容h5和微信y
  })
  return { path, query }
}
/**
 * 得到所有的需要登录的pages，包括主包和分包的
 * 这里设计得通用一点，可以传递key作为判断依据，默认是 needLogin, 与 route-block 配对使用
 * 如果没有传 key，则表示所有的pages，如果传递了 key, 则表示通过 key 过滤
 */
export const getAllPages = (key = 'needLogin') => {
  // 这里处理主包
  const mainPages = [
    ...pages
      .filter((page) => !key || page[key])
      .map((page) => ({
        ...page,
        path: `/${page.path}`,
      })),
  ]
  // 这里处理分包
  const subPages: any[] = []
  subPackages.forEach((subPageObj) => {
    // console.log(subPageObj)
    const { root } = subPageObj

    subPageObj.pages
      .filter((page) => !key || page[key])
      .forEach((page: { path: string } & Record<string, any>) => {
        subPages.push({
          ...page,
          path: `/${root}/${page.path}`,
        })
      })
  })
  const result = [...mainPages, ...subPages]
  // console.log(`getAllPages by ${key} result: `, result)
  return result
}

/**
 * 得到所有的需要登录的pages，包括主包和分包的
 * 只得到 path 数组
 */
export const getNeedLoginPages = (): string[] => getAllPages('needLogin').map((page) => page.path)

/**
 * 得到所有的需要登录的pages，包括主包和分包的
 * 只得到 path 数组
 */
export const needLoginPages: string[] = getAllPages('needLogin').map((page) => page.path)

下面是pages.json文件，把需要登录的页面设置上"needLogin":true,

{
    "pages": [ //pages数组中第一项表示应用启动页，参考：https://uniapp.dcloud.io/collocation/pages
        {
            "path": "pages/index/index",
            "style": {
                "navigationBarTitleText": "首页"
            }
        },
        {
            "path": "pages/Mine/Mine",
            "needLogin":true,
            "style": {
                "navigationBarTitleText": "我的",
                "navigationStyle": "custom"
            }
        },
        {
            "path" : "pages/Waterfall/Waterfall",
            "needLogin":true,
            "style" : 
            {
                "navigationBarTitleText" : "瀑布流"
            }
        },
        {
            "path" : "pages/login/login",
            "style" : 
            {
                "navigationBarTitleText" : "登录"
            }
        }
    ],
    "globalStyle": {
        "navigationBarTextStyle": "black",
        "navigationBarTitleText": "uni-app",
        "navigationBarBackgroundColor": "#F8F8F8"
        // "backgroundColor": "#F8F8F8"
    },
    "uniIdRouter": {},
    "tabBar": {
        "color": "#7A7E83",
        "selectedColor": "#1296db",
        "borderStyle": "black",
        "backgroundColor": "#ffffff",
        "list": [{
            "pagePath": "pages/index/index",
            "iconPath": "static/ic_tab_home_unselect.png",
            "selectedIconPath": "static/ic_tab_home_select.png",
            "text": "首页"
        },{
            "pagePath": "pages/Waterfall/Waterfall",
            "iconPath": "static/ic_tab_home_unselect.png",
            "selectedIconPath": "static/ic_tab_home_select.png",
            "text": "瀑布流"
        }, {
            "pagePath": "pages/Mine/Mine",
            "iconPath": "static/ic_tab_mine_unselect.png",
            "selectedIconPath": "static/ic_tab_mine_select.png",
            "text": "我的"
        }]
    },
    "subPackages": []
}

main.js引入

然后再main.js中引入监听

import App from './App'
import { routeInterceptor} from './interceptors'
// #ifndef VUE3
import Vue from 'vue'
import './uni.promisify.adaptor'
Vue.config.productionTip = false
App.mpType = 'app'
const app = new Vue({
  ...App
})

app.$mount()
// #endif

// #ifdef VUE3
import { createSSRApp } from 'vue'
export function createApp() {
  const app = createSSRApp(App)
  app.use(routeInterceptor)
  return {
    app
  }
}
// #endif