当不输出理由时，无需解析理由

Author: wangliang181230

apps/application/flow/step_node/intent_node/impl/base_intent_node.py

@@ -97,7 +97,7 @@ def execute(self, model_id, prompt_template, dialogue_number, history_chat_recor
                 'history_message': history_message,
                 'user_input': user_input,
                 'branch_id': matched_branch['id'],
-                'reason': self.parse_result_reason(r.content),
+                'reason': self.parse_result_reason(r.content) if output_reason is True else '',
                 'category': matched_branch.get('content', matched_branch['id'])
             }, {}, _write_context=write_context)
 
@@ -154,8 +154,8 @@ def build_classification_prompt(self, prompt_template: str, user_input: str, bra
                 classification_id += 1
 
         # 构建输出JSON结构
-        output_reason = ',\n  "reason": ""' if output_reason is True else ''
-        output_json = f'{{\n  "classificationId": 0{output_reason}\n}}'
+        output_reason = ', "reason": ""' if output_reason is True else ''
+        output_json = f'{{"classificationId": 0{output_reason}}}'
 
         return (prompt_template or DEFAULT_PROMPT_TEMPLATE).format(
             classification_list=json.dumps(classification_list, ensure_ascii=False),