JsonToObjectTransformer tries to load unexpected KotlinModule [INT-4319]

[spring-operator]

kane zhu opened INT-4319 and commented

I'm using spring boot 2.0.0 M3 and below integration components.

'org.springframework.boot:spring-boot-starter-integration',
"org.springframework.integration:spring-integration-amqp",
"org.springframework.integration:spring-integration-mongodb",

I failed to start my spring boot app due to KotlinModule can not be instantiated,

Caused by: java.util.ServiceConfigurationError: com.fasterxml.jackson.databind.Module: Provider com.fasterxml.jackson.module.kotlin.KotlinModule could not be instantiated
	at java.util.ServiceLoader.fail(ServiceLoader.java:232)
	at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
	at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
	at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
	at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
	at com.fasterxml.jackson.databind.ObjectMapper.findModules(ObjectMapper.java:982)
	at com.fasterxml.jackson.databind.ObjectMapper.findModules(ObjectMapper.java:966)
	at com.fasterxml.jackson.databind.ObjectMapper.findAndRegisterModules(ObjectMapper.java:1016)
	at org.springframework.integration.support.json.Jackson2JsonObjectMapper.<init>(Jackson2JsonObjectMapper.java:63)
	at org.springframework.integration.support.json.JsonObjectMapperProvider.newInstance(JsonObjectMapperProvider.java:54)
	at org.springframework.integration.json.JsonToObjectTransformer.<init>(JsonToObjectTransformer.java:66)
	at org.springframework.integration.json.JsonToObjectTransformer.<init>(JsonToObjectTransformer.java:57)
	at cn.pilipa.agent.flow.NoteFlow.noteInStock(NoteFlow.java:28)
	at cn.pilipa.agent.flow.NoteFlow$$EnhancerBySpringCGLIB$$9f4a7026.CGLIB$noteInStock$0(<generated>)
	at cn.pilipa.agent.flow.NoteFlow$$EnhancerBySpringCGLIB$$9f4a7026$$FastClassBySpringCGLIB$$de649d.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:360)
	at cn.pilipa.agent.flow.NoteFlow$$EnhancerBySpringCGLIB$$9f4a7026.noteInStock(<generated>)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:155)
	... 19 common frames omitted
Caused by: java.lang.NoClassDefFoundError: kotlin/jvm/internal/DefaultConstructorMarker
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
	at java.lang.Class.getConstructor0(Class.java:3075)
	at java.lang.Class.newInstance(Class.java:412)
	at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
	... 39 common frames omitted

From the stacktrace the error is caused by JsonToObjectTransformer trying to load unexpected jackson module 'KotlinModule'.

Below is the code snippet of integration dsl,

@Bean
    public IntegrationFlow noteInStock(ConnectionFactory connectionFactory, AmqpTemplate amqpTemplate,
                                       MongoOperations mongoOperations) {
        return IntegrationFlows.from(Amqp.inboundAdapter(connectionFactory, MY_QUEUE))
                .transform(new JsonToObjectTransformer(Note.class))
                .log()
                .handle(MongoDb.outboundGateway(mongoOperations)
                        .expectSingleResult(true).entityClass(Note.class))
                .get();
    }

---

Affects: 5.0 M6

Issue Links:

• Jackson2JsonObjectMapper should use Jackson2ObjectMapperBuilder and don't load modules unconditionally [INT-4318] #8261 Jackson2JsonObjectMapper should use Jackson2ObjectMapperBuilder and don't load modules unconditionally
  ("duplicates")

[spring-operator]

Artem Bilan commented

Yep! That has been noticed already #8261.

Closing this as Duplicate.

As a workaround you can do this:

configurations {
	all*.exclude group: 'com.fasterxml.jackson.module', module: 'jackson-module-kotlin'
}

Feel free to contribute the fix as I described it in that JIRA!

Thank you!