vue3实现动态路由配置

思路：

1、登录成功后，返回动态的路由信息，存储在本地localStorage中。

2、router.js中在路由守卫钩子函数中使用router.addRoute()进行动态路由添加。

具体代码：

login.vue中

<script setup>
import {onMounted, reactive, ref} from 'vue';
import {KeyOutlined, SafetyOutlined, UserOutlined} from '@ant-design/icons-vue';
import sha1 from 'js-sha1';
import {useRoute, useRouter} from 'vue-router';
import appConstant from '../app-constant.js';
import commonService from '../service/common-service.js';
import sysUserService from '../service/sys-user-service.js';

const router = useRouter();
const route = useRoute();

const logoutAlert = ref(route.query.hasOwnProperty('logout'));
const closeLogoutAlert = () => {
  logoutAlert.value = false;
};

const formState = reactive({
  account: '',
  password: '',
  captcha: '',
});

const alertError = reactive({show: false, msg: ''});
const login = (data) => {
  loginLoading.value = true;
  //sessionDtorage存储接口返回的动态路由地址
  sysUserService.login(data).then(res => {
    sessionStorage.setItem(appConstant.SK_LOGIN_USER, JSON.stringify(res.data));
    router.replace('/home');

  }).catch(error => {
    alertError.show = true;
    alertError.msg = error.msg;

  }).finally(() => {
    getCaptcha();
    loginLoading.value = false;
  });
};
const loginLoading = ref(false);
const onFormFinish = (values) => {
  let password = '';
  if (values.password) {
    password = sha1(sha1(values.password));
  }
  const data = {
    account: values.account,
    password,
    captcha: values.captcha
  };
  login(data);
};

const captchaImgSrc = ref(null);

const getCaptcha = () => {
  commonService.getCaptcha().then(res => {
    captchaImgSrc.value = res;
  });
};

onMounted(() => {
  getCaptcha();
});

const onCaptchaClick = () => {
  getCaptcha();
};

</script>

<template>
  <div class="login">
    <main>
      <section class="left">
        <img src="../assets/yiyuan-logo.jpg" alt="logo">
        <div class="title">管理系统</div>
        <div class="sub-title">System</div>
      </section>

      <section class="right">
        <div>
          <span class="title">用户登录</span>
          <span class="sub-title">USER LOGIN</span>
        </div>

        <a-form :model="formState" @finish="onFormFinish">
          <a-form-item name="account" :rules="[{ required: true, message: '用户名不能为空' }]">
            <a-input
                v-model:value="formState.account"
                placeholder="请输入用户名"
                class="input"
                @click="closeLogoutAlert"
            >
              <template #prefix>
                <user-outlined class="input-icon"/>
              </template>
            </a-input>
          </a-form-item>

          <a-form-item name="password" :rules="[{ required: true, message: '密码不能为空' }]">
            <a-input-password
                v-model:value="formState.password"
                placeholder="请输入登录密码"
                class="input"
                @click="closeLogoutAlert"
            >
              <template #prefix>
                <key-outlined class="input-icon"/>
              </template>
            </a-input-password>
          </a-form-item>

          <a-form-item name="captcha" :rules="[{ required: true, message: '校验码不能为空' }]">
            <a-row>
              <a-col :span="16">
                <a-input
                    v-model:value="formState.captcha"
                    placeholder="请输入校验码"
                    class="input"
                    style="width: 270px"
                    @click="closeLogoutAlert"
                >
                  <template #prefix>
                    <safety-outlined class="input-icon"/>
                  </template>
                </a-input>
              </a-col>
              <a-col :span="8" style="display: flex; justify-content: flex-end;">
                <img class="captcha-img" :src="captchaImgSrc" alt="校验码" @click="onCaptchaClick">
              </a-col>
            </a-row>
          </a-form-item>

          <a-form-item>
            <a-button
                type="primary"
                html-type="submit"
                block
                :loading="loginLoading"
                class="input"
                style="font-size: 18px;font-weight: bolder;"
            >
              登录
            </a-button>
          </a-form-item>
        </a-form>
        <!--错误反馈-->
        <a-alert
            v-if="alertError.show"
            :message="alertError.msg"
            type="error"
            show-icon
            style="border-radius: 6px;"
        />
        <!--退出登录反馈-->
        <a-alert
            v-if="logoutAlert"
            message="您已成功退出"
            type="success"
            show-icon
            style="border-radius: 6px;"
        />
      </section>
    </main>
  </div>
</template>

<style scoped lang="less">
@import "../assets/var";

.login {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #ecf5ff;

  main {
    width: 800px;
    height: 540px;
    background-color: white;
    border-radius: 8px;
    box-shadow: @box-shadow-base;
    display: flex;

    .left {
      width: 330px;
      background-image: url(../assets/login-bg-2.svg), url(../assets/login-bg-1.svg);
      background-position: left top, left top;
      background-repeat: no-repeat no-repeat;
      display: flex;
      flex-direction: column;
      align-items: center;
      color: white;
      border-top-left-radius: 8px;
      border-bottom-left-radius: 8px;

      .title {
        font-size: 20px;
        font-weight: bolder;
      }

      .sub-title {
        font-size: 12px;
        margin-top: 8px;
      }

      img {
        width: 80px;
        border-radius: 50%;
        margin: 32px 0 24px 0;
      }
    }

    .right {
      flex-grow: 1;
      padding: 32px;

      .title {
        font-size: 18px;
        color: #666;
        font-weight: bolder;
        display: inline-block;
        margin-right: 8px;
      }

      .sub-title {
        font-size: 14px;
        color: #999;
      }

      .ant-form {
        margin-top: 80px;

        .input {
          height: 50px;
          border-radius: 6px;

          .input-icon {
            font-size: 24px;
            color: #cccccc;
          }

          &.ant-input-affix-wrapper-focused {
            .input-icon {
              color: #409eff;
            }
          }
        }

        .captcha-img {
          width: 126px;
          height: 49px;
          border: 1px solid #d9d9d9;
          border-radius: 6px;
          cursor: pointer;
        }
      }
    }
  }

}
</style>

router.js中

import {createRouter, createWebHistory} from 'vue-router';
import routes from './routes.js';
import NProgress from 'nprogress';
import 'nprogress/nprogress.css';
import {getSessionStorage, isBlank, isNil} from './util/common-util.js';
import appConstant from './app-constant.js';
import {Modal} from 'ant-design-vue';
// modules全局使用，以免上生产后页面无法访问
const modules = import.meta.glob('./pages/**/*.vue');

const router = createRouter({
  history: createWebHistory(),
  routes
});

router.beforeEach(async (to, from) => {

  Modal.destroyAll();
  NProgress.start();

  if (to.path !== '/') {
    if (!hasNecessaryRoute(to)) {
      const routeObj = generateRoute(to);
      if (isNil(routeObj)) {
        return '/404'
      } else {
        router.addRoute('Layout', routeObj);
        return to.fullPath;
      }
    }
  }

  const loginUser = getSessionStorage(appConstant.SK_LOGIN_USER, false);
  const isLogin = !isBlank(loginUser);

  if (!isLogin) {
    // 未登录，只允许访问登录页面
    if (to.path !== '/login') {
      return '/login';
    }

  } else {
    // 已登录，不允许访问登录页面
    if (to.path === '/login') {
      return from.path;
    }
  }

  if (to.path === '/') {
    // 不同登录状态下，对 / 路径的重定向
    return isLogin ? '/home' : '/login';
  }

  return true;

});

router.afterEach(() => {
  NProgress.done();
});
// 判断当前跳转的路由是否在router.getRoutes()里面
function hasNecessaryRoute(to) {
  return router.getRoutes().findIndex(r => r.path === to.path) !== -1;
}

function generateRoute(to) {
  const menus = getSessionStorage(appConstant.SK_LOGIN_USER, true)?.menus;
  if (isBlank(menus)) {
    return null;
  }

  const find = menus.filter(m => m.menuType === 'MENU').find(m=>m.linkLocation === to.path);
  if (isNil(find)) {
    return null;
  }

  return {
    path: find.linkLocation,
    component: modules[`./${find.componentLocation}`]
  };
}

export default router;