Including the following in my pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
will cause the following error in Eclipse when trying to debug my application. If I run my application from the Git command line interpreter it works fine. It looks like Elipse provides an inapropriate ValidationProvider, I guess (jakarta.validation.spi.ValidationProvider) ... If I try to specify the ValidationProvider using the following code, I get the same exception.
@Bean("myValidator")
public LocalValidatorFactoryBean validator() {
LocalValidatorFactoryBean bean = new LocalValidatorFactoryBean();
bean.setProviderClass(HibernateValidator.class);
bean.afterPropertiesSet();
return bean;
}
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.3</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
Eclipse IDE for Enterprise Java and Web Developers (includes Incubating components)
Version: 2022-03 (4.23.0) Build id: 20220310-1457
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This product includes software developed by other open source projects including the Apache Software Foundation, https://www.apache.org/.
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManager' defined in class path resource [com/ritchey/timesheet/DataConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: timesheetPersistence] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:414)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:302)
at com.ritchey.timesheet.Timesheet.main(Timesheet.java:51)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: timesheetPersistence] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653)
... 17 common frames omitted
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: timesheetPersistence] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
at com.ritchey.timesheet.DataConfig.entityManagerFactory(DataConfig.java:141)
at com.ritchey.timesheet.DataConfig$$EnhancerBySpringCGLIB$$1d913e5e.CGLIB$entityManagerFactory$9(<generated>)
at com.ritchey.timesheet.DataConfig$$EnhancerBySpringCGLIB$$1d913e5e$$FastClassBySpringCGLIB$$458defb9.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)
at com.ritchey.timesheet.DataConfig$$EnhancerBySpringCGLIB$$1d913e5e.entityManagerFactory(<generated>)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
... 18 common frames omitted
Caused by: org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:143)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:300)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409)
... 31 common frames omitted
Caused by: java.lang.NoClassDefFoundError: jakarta/validation/spi/ValidationProvider
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:467)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.nextProviderClass(ServiceLoader.java:1217)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1228)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1273)
at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1309)
at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1393)
at javax.validation.Validation$GetValidationProviderListAction.loadProviders(Validation.java:381)
at javax.validation.Validation$GetValidationProviderListAction.run(Validation.java:356)
at javax.validation.Validation$GetValidationProviderListAction.getValidationProviderList(Validation.java:338)
at javax.validation.Validation$DefaultValidationProviderResolver.getValidationProviders(Validation.java:320)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:277)
at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:103)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:501)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.activate(TypeSafeActivator.java:83)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:137)
... 37 common frames omitted
Caused by: java.lang.ClassNotFoundException: jakarta.validation.spi.ValidationProvider
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 66 common frames omitted
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManager' defined in class path resource [com/ritchey/timesheet/DataConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: timesheetPersistence] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:414)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:302)
at com.ritchey.timesheet.Timesheet.main(Timesheet.java:51)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean]: Factory method 'entityManagerFactory' threw exception; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: timesheetPersistence] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653)
... 17 more
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: timesheetPersistence] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341)
at com.ritchey.timesheet.DataConfig.entityManagerFactory(DataConfig.java:141)
at com.ritchey.timesheet.DataConfig$$EnhancerBySpringCGLIB$$1d913e5e.CGLIB$entityManagerFactory$9(<generated>)
at com.ritchey.timesheet.DataConfig$$EnhancerBySpringCGLIB$$1d913e5e$$FastClassBySpringCGLIB$$458defb9.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)
at com.ritchey.timesheet.DataConfig$$EnhancerBySpringCGLIB$$1d913e5e.entityManagerFactory(<generated>)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
... 18 more
Caused by: org.hibernate.cfg.beanvalidation.IntegrationException: Error activating Bean Validation integration
at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:143)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:300)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:471)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1498)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409)
... 31 more
Caused by: java.lang.NoClassDefFoundError: jakarta/validation/spi/ValidationProvider
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:862)
at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:760)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:681)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:467)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.nextProviderClass(ServiceLoader.java:1217)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNextService(ServiceLoader.java:1228)
at java.base/java.util.ServiceLoader$LazyClassPathLookupIterator.hasNext(ServiceLoader.java:1273)
at java.base/java.util.ServiceLoader$2.hasNext(ServiceLoader.java:1309)
at java.base/java.util.ServiceLoader$3.hasNext(ServiceLoader.java:1393)
at javax.validation.Validation$GetValidationProviderListAction.loadProviders(Validation.java:381)
at javax.validation.Validation$GetValidationProviderListAction.run(Validation.java:356)
at javax.validation.Validation$GetValidationProviderListAction.getValidationProviderList(Validation.java:338)
at javax.validation.Validation$DefaultValidationProviderResolver.getValidationProviders(Validation.java:320)
at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:277)
at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:103)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:501)
at org.hibernate.cfg.beanvalidation.TypeSafeActivator.activate(TypeSafeActivator.java:83)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:137)
... 37 more
Caused by: java.lang.ClassNotFoundException: jakarta.validation.spi.ValidationProvider
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 66 more
Comment From: philwebb
We rely entirely on the IDE to configure the classpath, if Eclipse is adding an invalid ValidationProvider you'll need to raise an issue with them. If you have a sample project I'm happy to try it locally to see if I have the same problem.
Comment From: ghost
Yes but there must be a way to override the default, and I can't find it. The library is basically unusable if some IDE or even Tomcat default configuration can cause your application not to start without some remedy. Why did explicitly setting the provider not cause the default IDE configuration to be ignored?
Comment From: philwebb
@geoffritchey It's really hard to tell without seeing a sample application that reproduces the problem. I notice that you're specifying Spring Boot 2.6.3 which doesn't support Jakarta APIs. Perhaps that's why bean.setProviderClass(HibernateValidator.class); isn't working.
If you can't provide a sample application, you might try debugging GetValidationProviderListAction.loadProviders and stepping into the ServiceLoader calls to see what's actually contributing jakarta.validation.spi.ValidationProvider.
Comment From: ghost
Below appears to me to be the relevant code (getVaidatorFactory()) (package org.hibernate.cfg.beanvalidation.TypeSafeActivator ---- maybe this is a hibernate issue). In my case, it is falling through to "3 - build our own". The factory in 1 and 2 are coming back null. Can you tell me how to configure Spring so that either 1 or 2 would not be null? When I hit option 3, there is a FATAL error that cannot be caught because a class.forName() is called on a class that cannot be loaded.
private static ValidatorFactory getValidatorFactory(ActivationContext activationContext) {
// IMPL NOTE : We can either be provided a ValidatorFactory or make one. We can be provided
// a ValidatorFactory in 2 different ways. So here we "get" a ValidatorFactory in the following order:
// 1) Look into SessionFactoryOptions.getValidatorFactoryReference()
// 2) Look into ConfigurationService
// 3) build a new ValidatorFactory
// 1 - look in SessionFactoryOptions.getValidatorFactoryReference()
ValidatorFactory factory = resolveProvidedFactory( activationContext.getSessionFactory().getSessionFactoryOptions() );
if ( factory != null ) {
return factory;
}
// 2 - look in ConfigurationService
factory = resolveProvidedFactory( activationContext.getServiceRegistry().getService( ConfigurationService.class ) );
if ( factory != null ) {
return factory;
}
// 3 - build our own
try {
return Validation.buildDefaultValidatorFactory();
}
catch ( Exception e ) {
throw new IntegrationException( "Unable to build the default ValidatorFactory", e );
}
}
Comment From: philwebb
I'm afraid I don't know that area of the code well enough to offer advice. I think we'll need a sample application in order to continue.
Comment From: ghost
Here is my project that exhibits the problem (https://github.com/geoffritchey/TimeSheetSpringBoot2). I will try to refine this down to a smallest subset, but I think this issue may also be related to what I have installed in Eclipse.
You could simulate the problem by having jdk.internal.loader.BuiltinClassLoader.loadClass(String, boolean) thow a ClassNotFound Exception.
Change
/**
* Loads the class with the specified binary name.
*/
@Override
protected Class<?> loadClass(String cn, boolean resolve)
throws ClassNotFoundException
{
Class<?> c = loadClassOrNull(cn, resolve);
if (c == null)
throw new ClassNotFoundException(cn);
return c;
}
to something like
/**
* Loads the class with the specified binary name.
*/
@Override
protected Class<?> loadClass(String cn, boolean resolve)
throws ClassNotFoundException
{
throw new ClassNotFoundException();
}
`
Comment From: philwebb
https://github.com/geoffritchey/TimeSheetSpringBoot2 givens a 404 not found for me.