Spring AI StucturedOutput Example doesn’t work

List<ActorsFilms> actorsFilms = ChatClient.create(chatModel).prompt()
        .user("Generate the filmography of 5 movies for Tom Hanks and Bill Murray.")
        .call()
        .entity(new ParameterizedTypeReference<List<ActorsFilms>>() {});

this example will throw ResourceAccessException

2025-09-30 09:09:11 [http-nio-9000-exec-10] WARN  o.s.a.r.a.SpringAiRetryAutoConfiguration - Retry error. Retry count: 1, Exception: I/O error on POST request for "https://api.deepseek.com/chat/completions": Connect timed out
org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://api.deepseek.com/chat/completions": Connect timed out
    at org.springframework.web.client.DefaultRestClient$DefaultRequestBodyUriSpec.createResourceAccessException(DefaultRestClient.java:697)
    at org.springframework.web.client.DefaultRestClient$DefaultRequestBodyUriSpec.exchangeInternal(DefaultRestClient.java:582)
    at org.springframework.web.client.DefaultRestClient$DefaultRequestBodyUriSpec.exchange(DefaultRestClient.java:533)
    at org.springframework.web.client.RestClient$RequestHeadersSpec.exchange(RestClient.java:680)

when I analyze the log, I find two reason below : - [ ] .entity will call https://api.deepseek.com/chat/completions.But it's not the right api to call - [ ] when you want to ask deepseek answer in json format. You mast add parameter response_format: { "type": "json_object" } in the request. But I can't find the definition of this most important field in DeepSeekChatOptions. I don't know whether SpringAI add the parameter to the request.

Due to these two reason, the example of ActorsFilms can't work. How can I fix it ?

Comment From: pengjian5720

I found another way to call :

    private final DeepSeekChatProperties deepSeekChatProperties;

    public Flux<String> handleBillStructured(String param, Long userId, Long sessionId) {
        List<Message> messages = buildStructuredMessages(param, userId);

        return client.prompt(new Prompt(messages))
                .tools(billService)
                .advisors(a -> a.param(ChatMemory.CONVERSATION_ID, sessionId))
                .options(deepSeekChatProperties.getOptions())
                .stream()
                .content();
    }