IllegalArgumentException: Null key returned for cache operation

[dinerotah]

When upgrading to Spring Boot 3.2.0 (spring-framework 6.1.1), we have the following error evaluating cache key and the key is not null:

java.lang.IllegalArgumentException: Null key returned for cache operation (maybe you are using named params on classes without debug info?) Builder[public java.lang.String com.itc.iris.workflows.tests.base.TestRedisCacheService.getRandomString(java.lang.String)] caches=[rndString] | key='#key' | keyGenerator='' | cacheManager='' | cacheResolver='' | condition='' | unless='' | sync='false'
	at org.springframework.cache.interceptor.CacheAspectSupport.generateKey(CacheAspectSupport.java:673)
	at org.springframework.cache.interceptor.CacheAspectSupport.findCachedValue(CacheAspectSupport.java:456)
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:407)
	at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:371)
	at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:74)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:765)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:717)
	at com.itc.iris.workflows.tests.base.TestRedisCacheService$$SpringCGLIB$$0.getRandomString(<generated>)
	at com.itc.iris.workflows.tests.TestRedisCacheManager.testTypesCanBeSerializedAndDeserialized(TestRedisCacheManager.java:33)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)

[sbrannen]

@Taha-Di-Nero, are you compiling your code with -parameters?

---

Since Spring Framework 6.1 / Spring Boot 3.2, you must compile your code with -parameters.

See this section of the upgrade notes for details.

In addition, you should have seen a warning in the logs stating this with 6.0.x.

[dinerotah]

@sbrannen yes

    compileJava {
           options.compilerArgs << '-parameters'
    }

[sbrannen]

Hi @Taha-Di-Nero,

The configuration you've shown affects main code in your Gradle build, so that is a good indication.

However, you may also need to do the same for test code or manually within your IDE.

Thus, in order to assist you further, please provide us a minimal example that reproduces the issue -- preferably as a public Git repository or ZIP file that we can download and run.

Thanks

[dinerotah]

@sbrannen yes you are right changing to:

 tasks.withType(JavaCompile) {
        configure(options) {
            options.compilerArgs << '-parameters'
        }
    }

Has resolved the problem
Thanks a lot for the support.