ai-agents-message-serializatio-user-needs-to-serialize-langchain-message-objects--8a8523b4

THEN Implement a custom serialization method or a conversion function that maps LangChain message objects to a simple dictionary (e.g., {'role': message.type, 'message': message.content}). For OpenAI-compatible APIs, output can use 'role' and 'content' keys. Use ensure_ascii=False to preserve non-ASCII characters.

def message_to_dict(msg):
    return {"role": msg.type, "message": msg.content}

messages = [SystemMessage(content="abc1你好")]
json_str = json.dumps([message_to_dict(m) for m in messages], ensure_ascii=False)