fix: 统一文档解析文件格式校验

- 统一知识库和工作流支持格式并增加前后端上传拦截

- 拒绝 XLS 与伪装 XLSX，避免空内容解析成功

easyflow-ui-admin/app/src/views/ai/documentCollection/ImportKnowledgeFileContainer.test.ts

@@ -0,0 +1,52 @@
+import { shallowMount } from '@vue/test-utils';
+
+import { describe, expect, it, vi } from 'vitest';
+
+import ImportKnowledgeFileContainer from './ImportKnowledgeFileContainer.vue';
+
+vi.mock('@easyflow/hooks', () => ({
+  useAppConfig: () => ({ apiURL: '' }),
+}));
+
+vi.mock('@easyflow/locales', () => ({
+  $t: (key: string, params?: Record<string, string>) =>
+    key === 'documentCollection.importDoc.batchUploadDescription'
+      ? `支持 ${params?.types} 文件`
+      : key,
+}));
+
+vi.mock('@easyflow/stores', () => ({
+  useAccessStore: () => ({ accessToken: 'test-token' }),
+}));
+
+vi.mock('#/api/request', () => ({ api: {} }));
+
+vi.mock('#/locales', () => ({
+  $t: (key: string) => key,
+}));
+
+vi.mock('element-plus/es/components/table-v2/index.mjs', () => ({
+  ElAutoResizer: { template: '<div><slot :height="300" :width="600" /></div>' },
+  ElTableV2: { template: '<div />' },
+}));
+
+vi.mock('element-plus/es/components/table-v2/style/css.mjs', () => ({}));
+
+describe('import knowledge file container', () => {
+  it('uses the shared document formats for file and folder selection', () => {
+    const wrapper = shallowMount(ImportKnowledgeFileContainer, {
+      props: { batchMode: true },
+    });
+    const inputs = wrapper.findAll('input[type="file"]');
+
+    expect(inputs).toHaveLength(2);
+    for (const input of inputs) {
+      expect(input.attributes('accept')).toBe(
+        '.txt,.pdf,.docx,.md,.pptx,.xlsx,.csv',
+      );
+    }
+    expect(wrapper.text()).toContain(
+      '支持 TXT、PDF、DOCX、MD、PPTX、XLSX、CSV 文件',
+    );
+  });
+});

easyflow-ui-admin/app/src/views/ai/documentCollection/ImportKnowledgeFileContainer.vue

@@ -22,6 +22,7 @@ import {
 import { formatFileSize } from '#/api/common/file';
 import { api } from '#/api/request';
 import DragFileUpload from '#/components/upload/DragFileUpload.vue';
+import { DocumentParseFilePolicy } from '#/utils/document-parse-file-policy';
 
 import { resolveDocumentUploadResponse } from './document-import-upload-response';
 
@@ -80,16 +81,6 @@ const emit = defineEmits<{
 const MAX_FILE_COUNT = 2000;
 const MAX_FILE_SIZE_BYTES = 100 * 1024 * 1024;
 const MAX_TOTAL_SIZE_BYTES = 1024 * 1024 * 1024;
-const SUPPORTED_EXTENSIONS = new Set([
-  'csv',
-  'docx',
-  'md',
-  'pdf',
-  'pptx',
-  'txt',
-  'xlsx',
-]);
-
 const fileData = ref<LegacyFileInfo[]>([]);
 const filesPath = ref<any[]>([]);
 const dragUploadRef = ref<InstanceType<typeof DragFileUpload>>();
@@ -331,8 +322,7 @@ async function prepareBatch(files: File[]) {
       ignoredCount++;
       continue;
     }
-    const extension = file.name.split('.').pop()?.toLowerCase() || '';
-    if (!SUPPORTED_EXTENSIONS.has(extension)) {
+    if (!DocumentParseFilePolicy.supports(file.name)) {
       ignoredCount++;
       continue;
     }
@@ -344,7 +334,11 @@ async function prepareBatch(files: File[]) {
     accepted.push(file);
   }
   if (accepted.length === 0) {
-    ElMessage.warning($t('documentCollection.importDoc.noSupportedFiles'));
+    ElMessage.warning(
+      $t('documentCollection.importDoc.noSupportedFiles', {
+        types: DocumentParseFilePolicy.supportedTypeLabel,
+      }),
+    );
     return;
   }
   if (accepted.length > MAX_FILE_COUNT) {
@@ -356,7 +350,17 @@ async function prepareBatch(files: File[]) {
     return;
   }
   if (ignoredCount > 0) {
-    ElMessage.info($t('documentCollection.importDoc.unsupportedSkipped'));
+    ElMessage.info(
+      $t('documentCollection.importDoc.unsupportedSkipped', {
+        types: DocumentParseFilePolicy.supportedTypeLabel,
+      }),
+    );
+  }
+  try {
+    await DocumentParseFilePolicy.validateFiles(accepted);
+  } catch (error: any) {
+    ElMessage.warning(error?.message || $t('message.notSupported'));
+    return;
   }
 
   batchFiles.value = await Promise.all(
@@ -538,7 +542,7 @@ async function createClientFileKey(relativePath: string) {
         class="native-file-input"
         type="file"
         multiple
-        accept=".txt,.pdf,.docx,.md,.pptx,.xlsx,.csv"
+        :accept="DocumentParseFilePolicy.accept"
         @change="handleNativeSelection"
       />
       <input
@@ -546,6 +550,7 @@ async function createClientFileKey(relativePath: string) {
         class="native-file-input"
         type="file"
         multiple
+        :accept="DocumentParseFilePolicy.accept"
         webkitdirectory
         @change="handleNativeSelection"
       />
@@ -564,7 +569,11 @@ async function createClientFileKey(relativePath: string) {
           {{ $t('documentCollection.importDoc.batchUploadTitle') }}
         </div>
         <div class="batch-drop-zone__description">
-          {{ $t('documentCollection.importDoc.batchUploadDescription') }}
+          {{
+            $t('documentCollection.importDoc.batchUploadDescription', {
+              types: DocumentParseFilePolicy.supportedTypeLabel,
+            })
+          }}
         </div>
         <ElButton
           :icon="FolderOpened"