SpringBoot+Vue豆宝社区前后端分离项目手把手实战系列教程10---前端首页顶部导航

yarn add darkreader

<template>
  <header class="header has-background-white has-text-black">
    <b-navbar class="container is-white" :fixed-top="true">
      <template slot="brand">
        <b-navbar-item tag="div">
          <img :src="doubaoImg" alt="logo" />
        </b-navbar-item>
        <b-navbar-item class="is-hidden-desktop" tag="router-link" :to="{ path: '/' }">主页</b-navbar-item>
      </template>
      <template slot="start">
        <b-navbar-item tag="router-link" :to="{ path: '/' }">🌐 主页</b-navbar-item>
      </template>
      <template slot="end">
        <b-navbar-item tag="div">
          <b-field position="is-centered">
            <b-input
              v-model="searchKey"
              class="s_input"
              width="80%"
              placeholder="搜索帖子、标签和用户"
              rounded
              clearable
              @keyup.enter.native="search()"
            />
            <p class="control">
              <b-button class="is-info" @click="search()">检索</b-button>
            </p>
          </b-field>
        </b-navbar-item>
        <b-navbar-item tag="div">
          <b-switch
            v-model="darkMode"
            passive-type="is-warning"
            type="is-dark"
          >{{ darkMode ? "夜" : "日" }}</b-switch>
        </b-navbar-item>
        <b-navbar-item v-if="token == null || token === ''" tag="div">
          <div class="buttons">
            <b-button class="is-light" tag="router-link" :to="{ path: '/register' }">注册</b-button>
            <b-button class="is-light" tag="router-link" :to="{ path: '/login' }">登录</b-button>
          </div>
        </b-navbar-item>
        <b-navbar-dropdown v-else :label="user.alias">
          <b-navbar-item tag="router-link" :to="{ path: `/member/${user.username}/home` }">🧘 个人中心</b-navbar-item>
          <hr class="dropdown-divider" />
          <b-navbar-item tag="router-link" :to="{ path: `/member/${user.username}/setting` }">⚙ 设置中心</b-navbar-item>
          <hr class="dropdown-divider" />
          <b-navbar-item tag="a" @click="logout">👋 退出登录</b-navbar-item>
        </b-navbar-dropdown>
      </template>
    </b-navbar>
  </header>
</template>
<script>
import {
  disable as disableDarkMode,
  enable as enableDarkMode
} from "darkreader";
import { getDarkMode, setDarkMode } from "@/utils/auth";
import { mapGetters } from "vuex";
export default {
  name: "Header",
  data() {
    return {
      logoUrl: require("@/assets/logo.png"),
      doubaoImg: require("@/assets/image/doubao.png"),
      searchKey: "",
      darkMode: false
    };
  },
  computed: {
    ...mapGetters(["token", "user"])
  },
  watch: {
    // 监听Theme模式
    darkMode(val) {
      if (val) {
        enableDarkMode({});
      } else {
        disableDarkMode();
      }
      setDarkMode(this.darkMode);
    }
  },
  created() {
    // 获取cookie中的夜间还是白天模式
    this.darkMode = getDarkMode();
    if (this.darkMode) {
      enableDarkMode({});
    } else {
      disableDarkMode();
    }
  },
  methods: {
    async logout() {
      this.$store.dispatch("user/logout").then(() => {
        this.$message.info("退出登录成功");
        setTimeout(() => {
          this.$router.push({ path: this.redirect || "/" });
        }, 500);
      });
    },
    search() {
      console.log(this.token);
      if (this.searchKey.trim() === null || this.searchKey.trim() === "") {
        this.$message.info({
          showClose: true,
          message: "请输入关键字搜索！",
          type: "warning"
        });
        return false;
      }
      this.$router.push({ path: "/search?key=" + this.searchKey });
    }
  }
};
</script>
<style scoped>
input {
  width: 80%;
  height: 86%;
}
</style>

this.$store.dispatch("user/getInfo")

yarn add nprogress

const title = '小而美的智慧社区系统'
export default function getPageTitle(pageTitle) {
    if (pageTitle) {
        return `${pageTitle} - ${title}`
    }
    return `${title}`
}

import router from './router'
import store from './store'
import getPageTitle from '@/utils/get-page-title'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css'
import {getToken} from "@/utils/auth"; // progress bar style
NProgress.configure({showSpinner: false}) // NProgress Configuration
router.beforeEach(async (to, from, next) => {
    // start progress bar
    NProgress.start()
    // set page title
    document.title = getPageTitle(to.meta.title)
    // determine whether the user has logged in
    const hasToken = getToken();
    if (hasToken) {
        if (to.path === '/login') {
            // 登录，跳转首页
            next({path: '/'})
            NProgress.done()
        } else {
            // 获取用户信息
            await store.dispatch('user/getInfo')
            next()
        }
    } else {
        next()
    }
})
router.afterEach(() => {
    // finish progress bar
    NProgress.done()
})

import '@/permission.js'