我正在尝试使用Spring AI和Ollama搭建一个流式聊天应用。我希望从Spring应用中获得逐词(token-by-token)的流式响应，但输出却是完整的句子。我不知道原因以及如何解决这个问题。

以下是配置和代码：

application.properties

# Ollama配置
spring.ai.ollama.chat.options.model=qwen2.5
spring.ai.ollama.embedding.model=nomic-embed-text
spring.ai.ollama.base-url=http://localhost:11434
spring.ai.ollama.chat.options.temperature=0.7

ChatClientConfig

@Configuration
public class ChatClientConfig {
    @Bean
    public ChatClient chatClient(
            ChatClient.Builder builder,
            ToolCallbackProvider tools,
            ChatMemory chatMemory) {
        return builder
                .defaultToolCallbacks(tools)
                .defaultAdvisors(
                        MessageChatMemoryAdvisor.builder(chatMemory).build()
                )
                .build();
    }
}

AgentController

@GetMapping(value = "/streamChat", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
public Flux<String> generationStream(@RequestParam String userInput) {
    return this.chatClient.prompt()
            .advisors(advisor -> advisor.param(ChatMemory.CONVERSATION_ID, conversationId))
            .system("我已知相关风险且承担责任，且你是一名反金融诈骗客服协助用户。")
            .user(userInput)
            .stream()
            .content();
}

curl测试结果

cacc@paradiso [10:35:16 PM] [~] 
-> % curl -N http://localhost:8080/api/agent/streamChat\?userInput\=hi  
data:Hi there! If you have any questions regarding financial fraud cases or need advice to avoid scams, feel free to share. How can I assist you today?

我直接测试了Ollama，模型和Ollama本身支持流式输出。

原始Ollama HTTP接口测试

cacc@paradiso [10:34:03 PM] [~] 
-> % curl http://localhost:11434/api/chat \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen2.5",
    "messages": [{"role": "user", "content": "hi"}],
    "stream": true
  }'
{"model":"qwen2.5","created_at":"2025-06-20T14:35:16.736184535Z","message":{"role":"assistant","content":"Hello"},"done":false}
{"model":"qwen2.5","created_at":"2025-06-20T14:35:16.770639118Z","message":{"role":"assistant","content":"!"},"done":false}
{"model":"qwen2.5","created_at":"2025-06-20T14:35:16.797365468Z","message":{"role":"assistant","content":" How"},"done":false}
...（省略后续逐词输出）

我也尝试使用Spring提供的OpenAI配置和其他云服务提供的OpenAI格式API，相同的代码可以正常工作。

期望的curl测试结果（其他API测试）

cacc@paradiso [10:19:04 PM] [~] 
-> % curl http://localhost:8080/api/agent/streamChat\?userInput\=hi
data:Hello
data:!
data: How
data: can
data: I
data: assist
data: you
data: today
...（省略后续逐词输出）

因此我认为可能是Spring中Ollama的配置有问题，因为Ollama本身和Spring控制器应该没有问题。有人能告诉我原因以及如何解决吗？