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snicoll opened this issue May 13, 2017 · 3 comments
Closed

ReactiveWebApplicationContext swallows container startup exception #9221

snicoll opened this issue May 13, 2017 · 3 comments
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status: duplicate A duplicate of another issue

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@snicoll
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snicoll commented May 13, 2017

Consider the following project:
https://github.com/snicoll-scratches/test-spring-data-java9

Switch to Java9 and start it up (for instance via mvn spring-boot:run). You get something along the lines of:

2017-05-13 10:30:27.434  WARN 1016 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
2017-05-13 10:30:27.437  INFO 1016 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2017-05-13 10:30:27.443  WARN 1016 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase       : When running on Java 9 you need to add "--add-opens=java.base/java.lang=ALL-UNNAMED" to the JVM command line arguments to enable ThreadLocal memory leak detection. Alternatively, you can suppress this warning by disabling ThreadLocal memory leak detection.
2017-05-13 10:30:27.444  WARN 1016 --- [ost-startStop-1] o.a.c.loader.WebappClassLoaderBase       : When running on Java 9 you need to add "--add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED" to the JVM command line arguments to enable RMI Target memory leak detection. Alternatively, you can suppress this warning by disabling RMI Target memory leak detection.
2017-05-13 10:30:27.451  INFO 1016 --- [           main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-05-13 10:30:27.459 ERROR 1016 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:598) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1246) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1093) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:534) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:491) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:751) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:122) ~[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:806) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:349) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at com.example.DemoApplication.main(DemoApplication.java:10) [classes/:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:547) ~[na:na]
	at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:527) [spring-boot-maven-plugin-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at java.base/java.lang.Thread.run(Thread.java:844) [na:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	... 24 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:598) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1246) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1093) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:534) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:491) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.obtainBeanInstanceFromFactory(ConfigurationClassEnhancer.java:389) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.mvcConversionService(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.getConfigurableWebBindingInitializer(WebMvcConfigurationSupport.java:578) ~[spring-webmvc-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.getConfigurableWebBindingInitializer(WebMvcAutoConfiguration.java:434) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.requestMappingHandlerAdapter(WebMvcConfigurationSupport.java:540) ~[spring-webmvc-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.requestMappingHandlerAdapter(WebMvcAutoConfiguration.java:386) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.CGLIB$requestMappingHandlerAdapter$4(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93$$FastClassBySpringCGLIB$$83e2399f.invoke(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.requestMappingHandlerAdapter(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:547) ~[na:na]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	... 25 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	... 50 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1701) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:491) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1086) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.data.repository.support.Repositories.cacheRepositoryFactory(Repositories.java:96) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.repository.support.Repositories.populateRepositoryFactoryInformation(Repositories.java:89) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.repository.support.Repositories.<init>(Repositories.java:82) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.repository.support.DomainClassConverter.setApplicationContext(DomainClassConverter.java:99) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.web.config.SpringDataWebConfiguration.addFormatters(SpringDataWebConfiguration.java:100) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurerComposite.addFormatters(WebMvcConfigurerComposite.java:80) ~[spring-webmvc-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.addFormatters(DelegatingWebMvcConfiguration.java:77) ~[spring-webmvc-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.mvcConversionService(WebMvcConfigurationSupport.java:606) ~[spring-webmvc-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.CGLIB$mvcConversionService$32(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93$$FastClassBySpringCGLIB$$83e2399f.invoke(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358) ~[spring-context-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.mvcConversionService(<generated>) ~[spring-boot-autoconfigure-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:547) ~[na:na]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	... 51 common frames omitted
Caused by: java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.<init>(DefaultMethodInvokingMethodInterceptor.java:47) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:239) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$2(RepositoryFactoryBeanSupport.java:257) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.util.Lazy.get(Lazy.java:62) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:260) ~[spring-data-commons-2.0.0.M3.jar:na]
	at org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean.afterPropertiesSet(MongoRepositoryFactoryBean.java:117) ~[spring-data-mongodb-2.0.0.M3.jar:na]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1760) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1697) ~[spring-beans-5.0.0.RC1.jar:5.0.0.RC1]
	... 76 common frames omitted
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:335) ~[na:na]
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:278) ~[na:na]
	at java.base/java.lang.reflect.Constructor.checkCanSetAccessible(Constructor.java:191) ~[na:na]
	at java.base/java.lang.reflect.Constructor.setAccessible(Constructor.java:184) ~[na:na]
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.<init>(DefaultMethodInvokingMethodInterceptor.java:44) ~[spring-data-commons-2.0.0.M3.jar:na]
	... 83 common frames omitted

[WARNING]
java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:547)
	at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:527)
	at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:598)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1246)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1093)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:534)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:491)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:751)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:122)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:806)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:349)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289)
	at com.example.DemoApplication.main(DemoApplication.java:10)
	... 6 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter]: Factory method 'requestMappingHandlerAdapter' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587)
	... 24 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:598)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1246)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1093)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:534)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:491)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.obtainBeanInstanceFromFactory(ConfigurationClassEnhancer.java:389)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.mvcConversionService(<generated>)
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.getConfigurableWebBindingInitializer(WebMvcConfigurationSupport.java:578)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.getConfigurableWebBindingInitializer(WebMvcAutoConfiguration.java:434)
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.requestMappingHandlerAdapter(WebMvcConfigurationSupport.java:540)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration.requestMappingHandlerAdapter(WebMvcAutoConfiguration.java:386)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.CGLIB$requestMappingHandlerAdapter$4(<generated>)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93$$FastClassBySpringCGLIB$$83e2399f.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.requestMappingHandlerAdapter(<generated>)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:547)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
	... 25 more
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587)
	... 50 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1701)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:491)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:198)
	at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1086)
	at org.springframework.data.repository.support.Repositories.cacheRepositoryFactory(Repositories.java:96)
	at org.springframework.data.repository.support.Repositories.populateRepositoryFactoryInformation(Repositories.java:89)
	at org.springframework.data.repository.support.Repositories.<init>(Repositories.java:82)
	at org.springframework.data.repository.support.DomainClassConverter.setApplicationContext(DomainClassConverter.java:99)
	at org.springframework.data.web.config.SpringDataWebConfiguration.addFormatters(SpringDataWebConfiguration.java:100)
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurerComposite.addFormatters(WebMvcConfigurerComposite.java:80)
	at org.springframework.web.servlet.config.annotation.DelegatingWebMvcConfiguration.addFormatters(DelegatingWebMvcConfiguration.java:77)
	at org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.mvcConversionService(WebMvcConfigurationSupport.java:606)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.CGLIB$mvcConversionService$32(<generated>)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93$$FastClassBySpringCGLIB$$83e2399f.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:358)
	at org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration$EnableWebMvcConfiguration$$EnhancerBySpringCGLIB$$f61df93.mvcConversionService(<generated>)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:547)
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
	... 51 more
Caused by: java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.<init>(DefaultMethodInvokingMethodInterceptor.java:47)
	at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:239)
	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$2(RepositoryFactoryBeanSupport.java:257)
	at org.springframework.data.util.Lazy.get(Lazy.java:62)
	at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:260)
	at org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean.afterPropertiesSet(MongoRepositoryFactoryBean.java:117)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1760)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1697)
	... 76 more
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @26ca8b3f
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:335)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:278)
	at java.base/java.lang.reflect.Constructor.checkCanSetAccessible(Constructor.java:191)
	at java.base/java.lang.reflect.Constructor.setAccessible(Constructor.java:184)
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.<init>(DefaultMethodInvokingMethodInterceptor.java:44)
	... 83 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

Now switch to the webflux branch and run the project again, you'll get

2017-05-13 10:32:07.651  WARN 1119 --- [           main] .r.c.ReactiveWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'speakerRepository': Invocation of init method failed; nested exception is java.lang.IllegalStateException: java.lang.reflect.InaccessibleObjectException: Unable to make java.lang.invoke.MethodHandles$Lookup(java.lang.Class) accessible: module java.base does not "opens java.lang.invoke" to unnamed module @1f72e670
2017-05-13 10:32:07.653  INFO 1119 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2017-05-13 10:32:07.657  INFO 1119 --- [           main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-05-13 10:32:07.663 ERROR 1119 --- [           main] o.s.boot.SpringApplication               : Application startup failed

java.lang.IllegalStateException: java.lang.NullPointerException
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.stopAndReleaseReactiveWebServer(ReactiveWebServerApplicationContext.java:152) ~[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:52) ~[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:806) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:349) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289) [spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at com.example.DemoApplication.main(DemoApplication.java:10) [classes/:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:547) ~[na:na]
	at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:527) [spring-boot-maven-plugin-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at java.base/java.lang.Thread.run(Thread.java:844) [na:na]
Caused by: java.lang.NullPointerException: null
	at org.springframework.boot.web.embedded.netty.NettyWebServer.stop(NettyWebServer.java:113) ~[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.stopAndReleaseReactiveWebServer(ReactiveWebServerApplicationContext.java:148) ~[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]
	... 13 common frames omitted

[WARNING]
java.lang.reflect.InvocationTargetException
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:547)
	at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:527)
	at java.base/java.lang.Thread.run(Thread.java:844)
Caused by: java.lang.IllegalStateException: java.lang.NullPointerException
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.stopAndReleaseReactiveWebServer(ReactiveWebServerApplicationContext.java:152)
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:52)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:806)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:349)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1289)
	at com.example.DemoApplication.main(DemoApplication.java:10)
	... 6 more
Caused by: java.lang.NullPointerException
	at org.springframework.boot.web.embedded.netty.NettyWebServer.stop(NettyWebServer.java:113)
	at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.stopAndReleaseReactiveWebServer(ReactiveWebServerApplicationContext.java:148)
	... 13 more
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

Both warnings are legit but the regular web context throws that cause. The reactive one does not and netty is just failing down the road since it isn't properly configured.
@snicoll snicoll added this to the 2.0.0.M2 milestone May 13, 2017
@philwebb philwebb modified the milestones: 2.0.0.M2, 2.0.0.M3 Jun 3, 2017
@alimate
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alimate commented Jun 4, 2017

Probably the same problem

@AlanBateman
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AlanBateman commented Jun 7, 2017 •
edited by philwebb
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DefaultMethodInvokingMethodInterceptor hints that this may be something to do with default methods in interfaces, is that right? If so then the enhancements in JEP 274 may be useful as it includes support for creating MethodHandles that bind to non-abstract methods in interfaces.

In addition, MethodHandles.privateLookupIn(Class,Lookup) is new in Java SE 9 and may be useful to some of the needs here.

@wilkinsona wilkinsona modified the milestones: 2.0.0.M3, 2.0.0.M4 Jul 26, 2017
@bclozel
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bclozel commented Aug 25, 2017

@alimate @snicoll I think the issue you're describing has been fixed by #9542 and/or #9698.

@AlanBateman Thanks for the pointers! I think this specific problem has been solved with https://jira.spring.io/browse/DATACMNS-991

@bclozel bclozel closed this as completed Aug 25, 2017
@bclozel bclozel added status: duplicate A duplicate of another issue and removed priority: high type: bug A general bug labels Aug 25, 2017
@bclozel bclozel removed this from the 2.0.0.M4 milestone Aug 25, 2017
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@bclozel @snicoll @philwebb @alimate @wilkinsona @AlanBateman