Having @JsonDeserialize is causing mismatchinputexception after spring boot 3.4 and spring cloud 2024.0.0 upgrade

[haajira]

Immediately after upgrade we started facing this issue. we use spring cloud function to read message from queue and spring cloud function takes care of creating pojo. in that pojo we have one customdeserlizer for a field which is causing exception if the input is missing incoming msg. if we remove jsondeserializer annotation it works fine.

If I remove JsonDeserlize annotation then it works fine.

---

@DaTa
@builder
public class TestClass implements Serializable{

**@JsonDeserialize(using = Deseril.class)**
public Integer number;

private Integer number2;

}

@Bean
public Consumer<Message<TestClass>> process() {
    return event->{
        try {
            TestClass data = event.getPayload();
        }catch(Exception e) {
            log.error(" exception ", e);
        }
    };
}

---

com.fasterxml.jackson.databind.exc.MismatchedInputException: Trailing token (of type FIELD_NAME) found after value (bound as com.fasterxml.jackson.databind.JsonNode): not allowed as per DeserializationFeature.FAIL_ON_TRAILING_TOKENS
at [Source: REDACTED (StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION disabled); line: 2, column: 1]
at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:63)
at com.fasterxml.jackson.databind.DeserializationContext.reportTrailingTokens(DeserializationContext.java:1840)
at com.fasterxml.jackson.databind.ObjectMapper._verifyNoTrailingTokens(ObjectMapper.java:5025)
<============-> 94% EXECUTING [6m 41s]ind.ObjectMapper._readValue(ObjectMapper.java:4898)
at com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:3146)
at com.xxx.events.stream.listener.Deseril.deserialize(Deseril.java:25)
at com.xxx.events.stream.listener.Deseril.deserialize(Deseril.java:16)

[haajira]

Our project is failing becuase of below statement used ContextFunctionCatalogAutoConfiguration.java.
mapper.configure(DeserializationFeature.FAIL_ON_TRAILING_TOKENS, true);

https://github.com/spring-cloud/spring-cloud-function/blob/v4.2.1/spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/config/ContextFunctionCatalogAutoConfiguration.java

Below setting in application.yml also not taking effect.its because of you are overriding it in your autoconfiguration.
spring.jackson:
deserialization.fail-on-trailing-tokens: false

[haajira]

@olegz, in our applications, we are using field level deserialization(for primitive types) and it is failing because of this particular attribute is turned on in ContextFunctionCatalogAutoConfiguration.java.

if not mandatory can you pls skip this mapper configurations in ContextFunctionCatalogAutoConfiguration.java ? In old code I see nothing is configured.

[curfew117]

@EventListener(ApplicationStartedEvent.class)
public void onApplicationStart(ApplicationStartedEvent applicationStartedEvent) {
    applicationStartedEvent
            .getApplicationContext()
            .getBean(JacksonMapper.class)
            .configureObjectMapper(mapper -> mapper.disable(DeserializationFeature.FAIL_ON_TRAILING_TOKENS));
}

This can be used as a work around

[olegz]

Can you please try with 2024.0.1?

[olegz]

Was trying to remember why it was added in the first place. . . I commented it for now in case it'll come back to me.
Anyway, it is fixed and merged