修改答案合成的策略

backend/app/engine/__init__.py

@@ -11,6 +11,7 @@ from app.engine.prompt import ReActChatFormatter_messages, tree_summary_query_en
 #from app.engine.loaders.db import makeDescriptionByEngine
 from app.engine.tools import ToolFactory
 from app.api.routers.request.base import ProjectInfo
+from llama_index.core.response_synthesizers import ResponseMode
 
 def getPrjFalg(params:dict=None)->str:
     prjFlag = ''
@@ -42,11 +43,11 @@ def get_chat_engine(filters=None, params:dict=None):
                                                             description=summary_query_tool_messages,
                                                             )
 
-        query_engine = create_query_engine(index,top_k,use_reranker,filters,response_mode = "COMPACT")
+        query_engine = create_query_engine(index,top_k,use_reranker,filters,response_mode = ResponseMode.TREE_SUMMARIZE)
         query_engine_tool = QueryEngineTool.from_defaults(query_engine=query_engine, name="zj_query_tool",
                                                           description=query_engine_tool_messages)
 
-        query_engine = create_query_engine(index,top_k,use_reranker,filters,response_mode = "TREE_SUMMARIZE")
+        query_engine = create_query_engine(index,top_k,use_reranker,filters,response_mode = ResponseMode.TREE_SUMMARIZE)
         query_engine_tool_1 = QueryEngineTool.from_defaults(query_engine=query_engine, name="zj_query_tool_1",
                                                           description=tree_summary_query_engine_tool_messages)