修改了错误处理

src/util/dataExtractor.ts

@@ -44,11 +44,11 @@ export class DataExtractor {
     public getData(fileName: string, sheetName: string): any {
         const fileData = this.data[fileName];
         if (!fileData) {
-            throw new Error(`File ${fileName} not found`);
+            throw new Error(`Excel文件不存在`);
         }
         const sheetData = fileData[sheetName];
         if (!sheetData) {
-            throw new Error(`Sheet ${sheetName} not found in file ${fileName}`);
+            throw new Error(`表格不存在`);
         }
         return sheetData;
     }