我在本地调用非要用流式的才能调通,非流式的就拿不到返回的消息, 另外用langchain调中转的api好像也调不通 
from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    api_key="sh-jB399EmKnoiB6P",
    base_url="http://localhost:8317/v1",
    model="gpt-5.2",
    streaming=True,
)

chunks = []
for chunk in llm.stream("你好"):
    # chunk 是 AIMessageChunk
    if chunk.content:
        chunks.append(chunk.content)

text = "".join(chunks)
print(tex...