Is Spring Integration 5.5.10 must be based on Java 9 to use or depend on spring integration?

[herodotus-ecosystem]

I have a microservice project based on spring boot 2.6.4, spring cloud 2021.0.1 and Java 8.

Among them, the core message mechanism is spring cloud starter bus Kafka. All functions operate normally.

My question is:

Today, I upgraded the spring boot version used in the project from 2.6.4 to 2.6.5. After starting the application, the following error occurs.

org.springframework.context.ApplicationContextException: Failed to start bean 'inputBindingLifecycle'; nested exception is java.lang.NoSuchMethodError: java.util.List.of(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/util/List;
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.17.jar:5.3.17]
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.17.jar:5.3.17]
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.17.jar:5.3.17]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_301]
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.17.jar:5.3.17]
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.17.jar:5.3.17]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.17.jar:5.3.17]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.17.jar:5.3.17]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.5.jar:2.6.5]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [spring-boot-2.6.5.jar:2.6.5]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [spring-boot-2.6.5.jar:2.6.5]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-2.6.5.jar:2.6.5]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [spring-boot-2.6.5.jar:2.6.5]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.6.5.jar:2.6.5]
	at cn.herodotus.cloud.uaa.UaaApplication.main(UaaApplication.java:22) [classes/:na]
Caused by: java.lang.NoSuchMethodError: java.util.List.of(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/util/List;
	at org.springframework.integration.support.json.JacksonJsonUtils.<clinit>(JacksonJsonUtils.java:58) ~[spring-integration-core-5.5.10.jar:5.5.10]
	at org.springframework.integration.kafka.inbound.KafkaMessageDrivenChannelAdapter.<init>(KafkaMessageDrivenChannelAdapter.java:139) ~[spring-integration-kafka-5.5.10.jar:5.5.10]
	at org.springframework.cloud.stream.binder.kafka.KafkaMessageChannelBinder.createConsumerEndpoint(KafkaMessageChannelBinder.java:735) ~[spring-cloud-stream-binder-kafka-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binder.kafka.KafkaMessageChannelBinder.createConsumerEndpoint(KafkaMessageChannelBinder.java:163) ~[spring-cloud-stream-binder-kafka-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binder.AbstractMessageChannelBinder.doBindConsumer(AbstractMessageChannelBinder.java:426) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binder.AbstractMessageChannelBinder.doBindConsumer(AbstractMessageChannelBinder.java:92) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binder.AbstractBinder.bindConsumer(AbstractBinder.java:143) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binding.BindingService.doBindConsumer(BindingService.java:180) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binding.BindingService.bindConsumer(BindingService.java:137) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binding.AbstractBindableProxyFactory.createAndBindInputs(AbstractBindableProxyFactory.java:118) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binding.InputBindingLifecycle.doStartWithBindable(InputBindingLifecycle.java:58) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at java.util.LinkedHashMap$LinkedValues.forEach(LinkedHashMap.java:608) ~[na:1.8.0_301]
	at org.springframework.cloud.stream.binding.AbstractBindingLifecycle.start(AbstractBindingLifecycle.java:57) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.cloud.stream.binding.InputBindingLifecycle.start(InputBindingLifecycle.java:34) ~[spring-cloud-stream-3.2.2.jar:3.2.2]
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.17.jar:5.3.17]
	... 14 common frames omitted

After checking the code, I found that with the upgrade of spring boot version, the spring integration core version was upgraded from 5.5.9 to 5.5.10。

Under version 5.5.10, the class org.springframework.integration.support.json.JacksonJsonUtils has added a static constant using method List.of() to initialize. Because there is no such method in Java 8, which is available in Java 9.

	/**
	 * The packages to trust on JSON deserialization by default.
	 */
	public static final List<String> DEFAULT_TRUSTED_PACKAGES =
			List.of(
					"java.util",
					"java.lang",
					"org.springframework.messaging.support",
					"org.springframework.integration.support",
					"org.springframework.integration.message",
					"org.springframework.integration.store",
					"org.springframework.integration.history"
			);

Is this a bug? Or I have to use Java 9 now?

[artembilan]

Yes, this is a bug. Unfortunately we noticed it already after that 5.5.10 release: 81f5b6b.

So, you have two workarounds: use Java 9 (or higher) or use Spring Integration 5.5.9 in your project:

<properties>
    <spring-integration.version>5.5.9</spring-integration.version>
</properties>

Sorry for that.

Fix via mentioned commit.

[herodotus-ecosystem]

OK，Thank you for your reply