Refactor code structure and remove redundant changes

pages/pdf-preview/index.vue

@@ -0,0 +1,33 @@
+<template>
+  <el-empty v-if="isError" description="加载中..." class="h-100vh"></el-empty>
+  <div class="w-100%">
+    <VuePdfEmbed :source="preview.url" class="w-full" @loaded="handlePdfLoaded" @error="handlePdfError" />
+  </div>
+</template>
+
+<script lang="ts" setup>
+  import { ref } from 'vue'
+  import VuePdfEmbed from 'vue-pdf-embed'
+
+  const isError = ref(true)
+  const url = new URL(window.location.href)
+  const preview = {
+    url: url.searchParams.get('url') || '',
+  }
+
+  // PDF加载成功回调
+  const handlePdfLoaded = (pdfInfo: any) => {
+    isError.value = false
+    console.log('PDF页数:', pdfInfo.numPages)
+    // 可在此处添加自定义逻辑
+  }
+
+  // PDF加载失败回调
+  const handlePdfError = (error: Error) => {
+    // isError.value = false
+    console.error('PDF加载失败:', error)
+    // 可在此处添加错误处理逻辑
+  }
+</script>
+
+<style lang="scss" scoped></style>