Merge branch 'requirement_380' into debug

src/views/sheetShow/index.vue

@@ -54,7 +54,7 @@ const getInfo = async(type='') => {
     info.value.SourcesFrom = Data.ExcelSource?setDefaultSource(Data.ExcelSource):''
   }
   if(isDemo.value){
-    document.title = Data.ExcelName;
+    document.title = Data.ExcelName || '';
   }
   showData.value = true; 
   type==='refresh'&&ElMessage.success('刷新成功')