Update app.py

app.py

@@ -178,13 +178,22 @@ def chatbot_response(message, history):
                     # 调用 MCP 工具
                     tool_result = call_mcp_tool(tool_name, tool_args)
                     
+                    # 限制返回结果大小，避免超长内容导致500错误
+                    result_str = json.dumps(tool_result, ensure_ascii=False)
+                    if len(result_str) > 4000:
+                        # 截断过长的结果
+                        tool_result_truncated = {"_truncated": True, "preview": result_str[:4000] + "..."}
+                        result_for_llm = json.dumps(tool_result_truncated)
+                    else:
+                        result_for_llm = result_str
+                    
                     # 记录工具调用(包含结果)
                     tool_calls_log.append({"name": tool_name, "arguments": tool_args, "result": tool_result})
                     
                     messages.append({
                         "role": "tool",
                         "name": tool_name,
-                        "content": json.dumps(tool_result),
+                        "content": result_for_llm,
                         "tool_call_id": tool_call.id
                     })
                 
@@ -270,13 +279,18 @@ function toggleToolDetails(id) {
                 yield response_prefix + accumulated_text
         
     except Exception as e:
-        yield f"❌ Error: {str(e)}"
+        import traceback
+        error_detail = str(e)
+        if "500" in error_detail:
+            yield f"❌ Error: 模型服务器错误。可能是数据太大或请求超时。\n\n详细信息: {error_detail[:200]}"
+        else:
+            yield f"❌ Error: {error_detail}\n\n{traceback.format_exc()[:500]}"
 
 # ========== Gradio 界面 ==========
 with gr.Blocks(title="Financial & Market AI Assistant", css="""
     .contain { max-width: 100% !important; padding: 0 !important; }
     #component-0 { height: 100vh !important; }
-    .chatbot { height: calc(100vh - 200px) !important; }
+    .chatbot { height: calc(100vh - 150px) !important; }
 """) as demo:
     gr.Markdown("# 🤖 Financial & Market AI Assistant")
     
@@ -289,16 +303,8 @@ with gr.Blocks(title="Financial & Market AI Assistant", css="""
             "Get the latest market news about crypto",
             "Compare Microsoft's latest earnings with its current stock price",
         ],
-        title="💬 Chat with AI",
-        chatbot=gr.Chatbot(height=700, show_copy_button=True),
+        chatbot=gr.Chatbot(height=800, show_copy_button=True),
     )
-    
-    # 底部信息栏(缩小)
-    gr.Markdown("""
-    <div style='padding: 8px; background: #f8f9fa; border-top: 1px solid #dee2e6; margin-top: 10px; font-size: 0.75em; color: #6c757d; text-align: center;'>
-        ✅ <strong>AI:</strong> Qwen/Qwen2.5-72B-Instruct:novita &nbsp;|&nbsp; 📊 <strong>Data:</strong> SEC Financial Reports + Market & Stock Data
-    </div>
-    """)
 
 # 启动应用
 if __name__ == "__main__":