ajy/code/frontend/src/views/404.vue

<template>
  <div class="not-found">
    <div class="not-found-content">
      <div class="error-code">404</div>
      <h2>页面不存在</h2>
      <p>您访问的页面不存在，请检查链接是否正确</p>
      <el-button type="primary" @click="goHome">返回首页</el-button>
    </div>
  </div>
</template>

<script setup>
import { useRouter } from 'vue-router'
const router = useRouter()
function goHome() {
  router.replace('/')
}
</script>

<style lang="scss" scoped>
.not-found {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f2f5;
}
.not-found-content {
  text-align: center;
  .error-code {
    font-size: 120px;
    font-weight: 700;
    color: #1890ff;
    line-height: 1;
    margin-bottom: 16px;
    opacity: 0.4;
  }
  h2 { font-size: 24px; color: #262626; margin-bottom: 12px; }
  p  { color: #8c8c8c; margin-bottom: 24px; }
}
</style>