Java 8 date/time type java.time.Duration not supported by default

[newzhiMing]

Caused by: org.springframework.http.converter.HttpMessageConversionException: Type definition error: [simple type, class java.time.Duration]
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:489)
at org.springframework.http.converter.AbstractGenericHttpMessageConverter.writeInternal(AbstractGenericHttpMessageConverter.java:123)
at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:235)
at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitterReturnValueHandler$HttpMessageConvertingHandler.sendInternal(ResponseBodyEmitterReturnValueHandler.java:221)
at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitterReturnValueHandler$HttpMessageConvertingHandler.send(ResponseBodyEmitterReturnValueHandler.java:212)
at org.springframework.web.servlet.mvc.method.annotation.ResponseBodyEmitter.sendInternal(ResponseBodyEmitter.java:223)
... 8 common frames omitted
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Java 8 date/time type java.time.Duration not supported by default: add Module "com.fasterxml.jackson.datatype:jackson-datatype-jsr310" to enable handling (through reference chain: org.springframework.ai.chat.model.ChatResponse["metadata"]->org.springframework.ai.chat.metadata.ChatResponseMetadata["rateLimit"]->org.springframework.ai.chat.metadata.EmptyRateLimit["tokensReset"])
at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:77)
at com.fasterxml.jackson.databind.SerializerProvider.reportBadDefinition(SerializerProvider.java:1330)
at com.fasterxml.jackson.databind.ser.impl.UnsupportedTypeSerializer.serialize(UnsupportedTypeSerializer.java:35)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:732)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:770)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:183)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:502)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:341)
at com.fasterxml.jackson.databind.ObjectWriter$Prefetch.serialize(ObjectWriter.java:1574)
at com.fasterxml.jackson.databind.ObjectWriter.writeValue(ObjectWriter.java:1061)
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.writeInternal(AbstractJackson2HttpMessageConverter.java:483)
... 13 common frames omitted

[dev-jonghoonpark]

Could you please share your related code?

[newzhiMing]

yes，thanks! `@PostMapping(produces = MediaType.TEXT_EVENT_STREAM_VALUE)
@operation(summary = "chat")
public Flux chat() throws InterruptedException {
ChatClient.ChatClientRequestSpec chat = chatClient.prompt(
new Prompt("hello!!!", options));
Flux chatResponseFlux = chat.stream().chatResponse();
return chatResponseFlux;
}

`
environment：spring ai 1.0.0-M7 springboot 3.3.4

[dev-jonghoonpark]

• Which model are you using?
• How did you initialize the options object?

It worked fine with the Anthropic model.

[newzhiMing]

The name of the model I use is gpt-4o-2024-11-20, which is one of the many models of GPT。
OpenAiChatOptions options = OpenAiChatOptions.builder().model("gpt-4o-2024-11-20").build();
I don't think the problem is that it comes out of the model, but that I return to the Flux.I think the reason may be that there is a type Duration in the property of object ChatResponse, which is an error reported by the json handler during serialization, but it cannot be solved by configuring the ObjectMapper.The ObjectMapper code I configured is as follows (it doesn't work)：
@Bean public ObjectMapper objectMapper() { ObjectMapper mapper = new ObjectMapper(); mapper.registerModule(new JavaTimeModule()); return mapper; }
Thank you, seniors!

[newzhiMing]

Thanks seniors, I solved it!