Spring Boot 2.0.0.M2 doesn't work with Spring Data MongoDB Kay.M4

[juergenzimmermann]

When I use the attached testcase I cannot start the server implemented in Main.java (see the console output below).

I'm using the following versions:
JDK 8u131
Gradle 4.1-milestone-1
MongoDB 3.5.10

The local MongoDB server is started w/o an authentication database. I get the same error when using an authentication database.

Console output:

Starting a Gradle Daemon, 1 busy and 2 incompatible Daemons could not be reused, use --status for details

> Task :bootRun

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::             (v2.0.0.M2)

2017-07-18 13:09:44.301  INFO 9372 --- [           main] de.hska.test.Microservice                : Starting Microservice on iwi-w-ziju01-d with PID 9372 (C:\Users\ziju0001\IdeaProjects\testcase\build\classes\java\main started by ziju0001 in C:\Users\ziju0001\IdeaProjects\testcase)
2017-07-18 13:09:44.305  INFO 9372 --- [           main] de.hska.test.Microservice                : No active profile set, falling back to default profiles: default
2017-07-18 13:09:44.382  INFO 9372 --- [           main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@402e37bc: startup date [Tue Jul 18 13:09:44 CEST 2017]; root of context hierarchy
2017-07-18 13:09:46.642  INFO 9372 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2017-07-18 13:09:46.658  INFO 9372 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2017-07-18 13:09:46.661  INFO 9372 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.15
2017-07-18 13:09:46.807  INFO 9372 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-07-18 13:09:46.807  INFO 9372 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2429 ms
2017-07-18 13:09:47.015  INFO 9372 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2017-07-18 13:09:47.021  INFO 9372 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-07-18 13:09:47.022  INFO 9372 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-07-18 13:09:47.022  INFO 9372 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-07-18 13:09:47.022  INFO 9372 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2017-07-18 13:09:47.085  WARN 9372 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'testController': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'testService': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'de.hska.test.service.TestRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
2017-07-18 13:09:47.088  INFO 9372 --- [           main] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2017-07-18 13:09:47.110  INFO 9372 --- [           main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-07-18 13:09:47.230 ERROR 9372 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   :

***************************
APPLICATION FAILED TO START
***************************

Description:

Parameter 0 of constructor in de.hska.test.service.TestService required a bean of type 'de.hska.test.service.TestRepository' that could not be found.


Action:

Consider defining a bean of type 'de.hska.test.service.TestRepository' in your configuration.

[juergenzimmermann]

testcase.zip

[juergenzimmermann]

Testcase is uploaded.

[snicoll]

@juergenzimmermann Your project doesn't compile for me.

[juergenzimmermann]

Hmm, I just downloaded the uploaded testcase.zip, unzipped, "gradle clean compileJava", "gradle" and had no problems to reproduces (see screenshot below). Which versions of Java and Gradle do you use?

[snicoll]

The tests do not compile

[juergenzimmermann]

@snicoll Uups. I've forgotten to delete the test stuff when producing the testcase. Sorry for the inconvenience. Please delete the directory below src\test\java

[juergenzimmermann]

Testcase updated: without src\test\java and src\test\resources
testcase.zip

[snicoll]

Here's an excerpt of the auto-configuration report

 MongoRepositoriesAutoConfiguration:
      Did not match:
         - @ConditionalOnMissingBean (types: org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean,org.springframework.data.mongodb.repository.config.MongoRepositoryConfigurationExtension; SearchStrategy: all) found beans of type'org.springframework.data.mongodb.repository.config.MongoRepositoryConfigurationExtension'org.springframework.data.mongodb.repository.config.MongoRepositoryConfigurationExtension#0 (OnBeanCondition)
      Matched:
         - @ConditionalOnClass found required classes 'com.mongodb.Mongo', 'org.springframework.data.mongodb.repository.MongoRepository'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition)
         - @ConditionalOnProperty (spring.data.mongodb.repositories.enabled=true) matched (OnPropertyCondition)

I've removed the unnecessary @EnableMongoRepositories on your config class and ended up with

java.lang.NullPointerException: null
	at org.springframework.data.repository.config.RepositoryBeanNameGenerator.getRepositoryInterfaceFromFactory(RepositoryBeanNameGenerator.java:81) ~[spring-data-commons-2.0.0.M4.jar:na]
	at org.springframework.data.repository.config.RepositoryBeanNameGenerator.getRepositoryInterfaceFrom(RepositoryBeanNameGenerator.java:75) ~[spring-data-commons-2.0.0.M4.jar:na]
	at org.springframework.data.repository.config.RepositoryBeanNameGenerator.generateBeanName(RepositoryBeanNameGenerator.java:52) ~[spring-data-commons-2.0.0.M4.jar:na]
	at org.springframework.data.repository.config.RepositoryConfigurationSourceSupport.generateBeanName(

We do not use the tracker for support request and that project is quite involved anyway . If you want us to look into it, please create a focused sample on the issue you're experiencing.

[juergenzimmermann]

@snicoll Well, the issue is that my microservices are working fine with Spring Boot 1.5.4.RELEASE and Spring Data Ingalls-SR4. After upgrading to Spring Boot 2.0.0.M2 and Spring Data Kay-M4 they don't start anymore. Therefore, I extracted the attached testcase so that you can reproduce it.
Due to the NPE I think it's an issue with Spring Data and now I created https://jira.spring.io/browse/DATAMONGO-1742