fix

frontend/app.py

@@ -105,6 +105,24 @@ def show_chat():
             st.markdown(f"**{info['name']}** *{msg['time']}* - {msg['task']}")
             st.markdown(msg["content"][:800] + ("..." if len(msg["content"]) > 800 else ""))
 
+def extract_code(content):
+    """从 Markdown 代码块中提取纯代码"""
+    # 检查是否有 ```python 标记
+    if "```python" in content:
+        # 提取 ```python 和 ``` 之间的内容
+        parts = content.split("```python")
+        if len(parts) > 1:
+            code = parts[1].split("```")[0].strip()
+            return code
+    elif "```" in content:
+        # 通用的 ``` 标记
+        parts = content.split("```")
+        if len(parts) > 1:
+            code = parts[1].strip()
+            return code
+    # 没有标记，返回原内容
+    return content
+
 def save_files():
     """保存生成的文件到 workspace/"""
     workspace = Path("workspace")
@@ -121,21 +139,28 @@ def save_files():
         if agent == "PM_Agent" and ("需求" in content or "SRS" in content):
             file = workspace / "SRS.md"
             with open(file, "w", encoding="utf-8") as f:
-                f.write(f"# 软件需求规格说明书\n\n生成时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n{content}")
+                f.write(f"# 软件需求规格说明书\n\n生成时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n")
+                f.write(content)
             files.append(str(file))
         
         # QA Agent 生成测试
-        if agent == "QA_Agent" and ("test" in content.lower() or "测试" in content):
+        if agent == "QA_Agent" and ("test" in content.lower() or "测试" in content or "def test_" in content):
             file = workspace / "test_sample.py"
+            # 提取纯代码
+            code = extract_code(content)
             with open(file, "w", encoding="utf-8") as f:
-                f.write(f"# 测试用例\n# 生成时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n{content}")
+                f.write(f"# 测试用例\n# 生成时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n")
+                f.write(code)
             files.append(str(file))
         
         # Dev Agent 生成代码
         if agent == "Dev_Agent" and ("def " in content or "class " in content):
             file = workspace / "src_sample.py"
+            # 提取纯代码
+            code = extract_code(content)
             with open(file, "w", encoding="utf-8") as f:
-                f.write(f"# 源代码\n# 生成时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n{content}")
+                f.write(f"# 源代码\n# 生成时间：{datetime.now().strftime('%Y-%m-%d %H:%M:%S')}\n\n")
+                f.write(code)
             files.append(str(file))
     
     return files
@@ -194,18 +219,24 @@ def main():
 
 def run_workflow(api_key, model, max_round):
     """运行工作流"""
+    # 保存现有消息（包括用户需求）
+    existing_messages = list(st.session_state.messages)
+    
+    # 只清空计数，不清空消息
     st.session_state.running = True
-    st.session_state.messages = []
     st.session_state.agent_counts = {k: 0 for k in AGENTS}
     
     progress = st.empty()
     progress.info("🚀 启动工作流...")
     
     try:
-        # 获取需求
-        user_msgs = [m for m in st.session_state.messages if m["agent"] == "User_Proxy"]
+        # 获取需求 - 在清空前已经保存了
+        user_msgs = [m for m in existing_messages if m["agent"] == "User_Proxy"]
         requirement = user_msgs[-1]["content"] if user_msgs else "开发一个电池健康预测 API"
         
+        # 显示需求
+        st.info(f"📋 用户需求：{requirement}")
+        
         # 创建 Agent
         llm_config = get_llm_config(model=model, api_key=api_key)