bugfix: query result is not json format.

Author: wenfeng.wf

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "alibabacloud-rds-openapi-mcp-server"
-version = "3.0.7"
+version = "3.0.8"
 description = "MCP server for RDS Services via OPENAPI."
 readme = "README.md"
 requires-python = ">=3.12"

src/alibabacloud_rds_openapi_mcp_server/db_service.py

@@ -210,4 +210,7 @@ def execute_sql(self, sql):
  result = [dict(zip(columns, row)) for row in rows]
  else:
  result = []
- return json.dumps(result, ensure_ascii=False)
+ try:
+ return json.dumps(result, ensure_ascii=False)
+ except Exception as e:
+ return str(result)