feat: 新增文件内容项，图片时展示，pdf时跳转到预览，其他文件下载

src/views/infra/file/index.vue

@@ -50,17 +50,7 @@
     <el-table v-loading="loading" :data="list">
       <el-table-column label="文件名" align="center" prop="name" :show-overflow-tooltip="true" />
       <el-table-column label="文件路径" align="center" prop="path" :show-overflow-tooltip="true" />
-      <el-table-column label="URL" align="center" prop="url" width="110px">
+      <el-table-column label="URL" align="center" prop="url" :show-overflow-tooltip="true" />
-        <template #default="{ row }">
-          <el-image
-            class="h-80px w-80px"
-            :src="row.url"
-            :preview-src-list="[row.url]"
-            preview-teleported
-            fit="cover"
-          />
-        </template>
-      </el-table-column>
       <el-table-column
         label="文件大小"
         align="center"
@@ -69,6 +59,21 @@
         :formatter="fileSizeFormatter"
       />
       <el-table-column label="文件类型" align="center" prop="type" width="180px" />
+      <el-table-column label="文件内容" align="center" prop="url" width="110px">
+        <template #default="{ row }">
+          <el-image
+            v-if="row.type.includes('image')"
+            class="h-80px w-80px"
+            lazy
+            :src="row.url"
+            :preview-src-list="[row.url]"
+            preview-teleported
+            fit="cover"
+          />
+          <el-link v-else-if="row.type.includes('pdf')" type="primary" :href="row.url" :underline="false">预览</el-link>
+          <el-link v-else type="primary" download :href="row.url" :underline="false" target="_blank">下载</el-link>
+        </template>
+      </el-table-column>
       <el-table-column
         label="上传时间"
         align="center"