Spring Session Boot Error - No session repository could be auto-configured, check your configuration (session store type is 'jdbc') - spring

Question

I am trying to create a simple Spring Boot Session project. It's the basic setup from Spring Initializr. I am getting following errors:
2018-06-20 12:59:24.318 INFO 8108 --- [ main] c.j.s.SpringSessionExampleApplication : Starting SpringSessionExampleApplication on pankaj with PID 8108 (/Users/pankaj/Documents/workspace-sts-3.9.4.RELEASE/Spring-Session-Example/target/classes started by pankaj in /Users/pankaj/Documents/workspace-sts-3.9.4.RELEASE/Spring-Session-Example)
2018-06-20 12:59:24.329 INFO 8108 --- [ main] c.j.s.SpringSessionExampleApplication : No active profile set, falling back to default profiles: default
2018-06-20 12:59:24.372 INFO 8108 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext#39de3d36: startup date [Wed Jun 20 12:59:24 IST 2018]; root of context hierarchy
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.springframework.cglib.core.ReflectUtils$1 (file:/Users/pankaj/.m2/repository/org/springframework/spring-core/5.0.7.RELEASE/spring-core-5.0.7.RELEASE.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of org.springframework.cglib.core.ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
2018-06-20 12:59:25.208 INFO 8108 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2018-06-20 12:59:25.226 INFO 8108 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2018-06-20 12:59:25.226 INFO 8108 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.31
2018-06-20 12:59:25.230 INFO 8108 --- [ost-startStop-1] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/Users/pankaj/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.]
2018-06-20 12:59:25.297 INFO 8108 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2018-06-20 12:59:25.297 INFO 8108 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 931 ms
2018-06-20 12:59:25.407 INFO 8108 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Servlet dispatcherServlet mapped to [/]
2018-06-20 12:59:25.411 INFO 8108 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2018-06-20 12:59:25.411 INFO 8108 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2018-06-20 12:59:25.411 INFO 8108 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2018-06-20 12:59:25.411 INFO 8108 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2018-06-20 12:59:25.500 INFO 8108 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-20 12:59:25.687 INFO 8108 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for #ControllerAdvice: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext#39de3d36: startup date [Wed Jun 20 12:59:24 IST 2018]; root of context hierarchy
2018-06-20 12:59:25.731 INFO 8108 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/messages],methods=[POST]}" onto public java.lang.String com.journaldev.spring.HomeController.saveMessage(java.lang.String,javax.servlet.http.HttpServletRequest)
2018-06-20 12:59:25.732 INFO 8108 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/],methods=[GET]}" onto public java.lang.String com.journaldev.spring.HomeController.home(org.springframework.ui.Model,javax.servlet.http.HttpSession)
2018-06-20 12:59:25.734 INFO 8108 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2018-06-20 12:59:25.735 INFO 8108 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2018-06-20 12:59:25.757 INFO 8108 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-20 12:59:25.758 INFO 8108 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2018-06-20 12:59:25.844 INFO 8108 --- [ main] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page template: index
2018-06-20 12:59:26.005 WARN 8108 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.session.SessionAutoConfiguration$ServletSessionRepositoryValidator': Invocation of init method failed; nested exception is org.springframework.boot.autoconfigure.session.SessionRepositoryUnavailableException: No session repository could be auto-configured, check your configuration (session store type is 'jdbc')
2018-06-20 12:59:26.006 INFO 8108 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Unregistering JMX-exposed beans on shutdown
2018-06-20 12:59:26.008 INFO 8108 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2018-06-20 12:59:26.023 INFO 8108 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-06-20 12:59:26.032 ERROR 8108 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.session.SessionAutoConfiguration$ServletSessionRepositoryValidator': Invocation of init method failed; nested exception is org.springframework.boot.autoconfigure.session.SessionRepositoryUnavailableException: No session repository could be auto-configured, check your configuration (session store type is 'jdbc')
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:138) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:424) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1700) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:581) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:503) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE]
at com.journaldev.spring.SpringSessionExampleApplication.main(SpringSessionExampleApplication.java:10) [classes/:na]
Caused by: org.springframework.boot.autoconfigure.session.SessionRepositoryUnavailableException: No session repository could be auto-configured, check your configuration (session store type is 'jdbc')
at org.springframework.boot.autoconfigure.session.SessionAutoConfiguration$AbstractSessionRepositoryValidator.checkSessionRepository(SessionAutoConfiguration.java:257) ~[spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE]
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:564) ~[na:na]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:365) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:308) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:135) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
... 18 common frames omitted
My application.properties:
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/SpringSessionDB
spring.datasource.username=pankaj
spring.datasource.password=pankaj
spring.session.store-type=jdbc
spring.session.jdbc.initialize-schema=always
Dependencies:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-core</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
I am not sure what is missing here?

Answer 1

You are missing the spring-session-jdbc dependency so the JdbcOperationsSessionRepository isn't present on the classpath. Your dependency management provides only spring-session-core dependency, which provides only Spring Session core API - the concrete SessionRepository implementations are placed in dedicated modules i.e. spring-session-data-redis, spring-session-jdbc, spring-session-hazelcast etc.
Once you do that, you can also remove the spring.session.store-type configuration property. As long as you have a single SessionRepository implementation on the classpath, Spring Boot will be able to deduce which one to auto-configure without you having to provide spring.session.store-type.
Having said that, Initializr should be able to include spring-session-jdbc for you however I believe you originally only selected Web, Session and MySQL options when creating project on Initialzr. Together with Session option, you should also select the store you intend to use (like JDBC in this case) so the Initializr can include the required Spring Session module.
On a final note, the arrangement with Spring Session modules changed in Spring Session 2.0, as previously all the code and SessionRepository implementations were placed in spring-session artifact which doesn't exist anymore in Spring Session 2.0. You can learn more about this in in the reference manual and have been mentioned in the 2.0.0.RELEASE announcement.