diff --git a/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/templatedb/TemplateDatabaseQueryService.java b/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/templatedb/TemplateDatabaseQueryService.java
index 82e962cb..b1341037 100644
--- a/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/templatedb/TemplateDatabaseQueryService.java
+++ b/doc/doc-server/src/main/java/cn/axzo/nanopart/doc/file/templatedb/TemplateDatabaseQueryService.java
@@ -112,6 +112,8 @@ public class TemplateDatabaseQueryService {
 				.map(IndexNodeCodeProvider::indexNodeCode) //
 				.filter(StringUtils::isNotBlank) //
 				.collect(toList());
+		if (CollectionUtils.isEmpty(codes))
+			return Collections.emptyList();
 		return templateDatabaseDao.lambdaQuery() //
 				.in(TemplateDatabase::getCode, codes) //
 				.list();