Spring NoSuchBeanDefinitionException when switching to JPMS (Java Platform Module System)

Question

I am trying to migrate a large project to JPMS (Java Platform Module System).

It contains some Spring components that are giving me some trouble. I have created a test repo to demonstrate the issue. When I remove the module-info.java file it works just fine as shown by the test in TestControllerTest.java. However, if I add the module-info.java then it stops working with the following exception:

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'RESTConfiguration': Unsatisfied dependency expressed through field 'fooAuthenticationProvider'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.spacemetric.spring.jpmstest.auth.FooAuthenticationProvider' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at [email protected]/org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:643)
at [email protected]/org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:130)
at … 

The stack trace seems to indicate that the ApplicationContext is unable to find the @Autowired implementation. I have opened the entire module for deep reflection. My highly uneducated guess is that this might be related to the classpath versus modulepath but I am at a loss for what to do about it.

The module-info.java file is as follows:

open module com.spacemetric.spring.jpmstest {       
    requires spring.core;
    requires spring.context;
    requires spring.beans;
    requires spring.security.config;
    requires spring.security.web;
    requires spring.webmvc;
    requires spring.security.core;
    requires javax.servlet.api;
    requires spring.web;
}

The following is the command line used by Eclipse to run the test (as requested):

C:\Program Files\Java\java-11-openjdk-11.0.7.10-1.windows.redhat.x86_64\bin\javaw.exe -ea --add-opens com.spacemetric.spring.jpmstest/com.spacemetric.spring.jpmstest=ALL-UNNAMED --add-modules=ALL-MODULE-PATH -Dfile.encoding=UTF-8 -p "C:\dev\source\spring-jpms-test\target\classes;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-core\5.2.6.RELEASE\spring-core-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\security\spring-security-web\5.3.2.RELEASE\spring-security-web-5.3.2.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\security\spring-security-core\5.3.2.RELEASE\spring-security-core-5.3.2.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-beans\5.2.6.RELEASE\spring-beans-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-context\5.2.6.RELEASE\spring-context-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-web\5.2.6.RELEASE\spring-web-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\security\spring-security-config\5.3.2.RELEASE\spring-security-config-5.3.2.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-webmvc\5.2.6.RELEASE\spring-webmvc-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\javax\servlet\javax.servlet-api\3.1.0\javax.servlet-api-3.1.0.jar" -classpath "C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-jcl\5.2.6.RELEASE\spring-jcl-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-aop\5.2.6.RELEASE\spring-aop-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-expression\5.2.6.RELEASE\spring-expression-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\junit\jupiter\junit-jupiter-engine\5.7.0\junit-jupiter-engine-5.7.0.jar;C:\Users\Oscar Haglund.m2\repository\org\apiguardian\apiguardian-api\1.1.0\apiguardian-api-1.1.0.jar;C:\Users\Oscar Haglund.m2\repository\org\junit\platform\junit-platform-engine\1.7.0\junit-platform-engine-1.7.0.jar;C:\Users\Oscar Haglund.m2\repository\org\opentest4j\opentest4j\1.2.0\opentest4j-1.2.0.jar;C:\Users\Oscar Haglund.m2\repository\org\junit\platform\junit-platform-commons\1.7.0\junit-platform-commons-1.7.0.jar;C:\Users\Oscar Haglund.m2\repository\org\junit\jupiter\junit-jupiter-api\5.7.0\junit-jupiter-api-5.7.0.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\spring-test\5.2.6.RELEASE\spring-test-5.2.6.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\restdocs\spring-restdocs-mockmvc\2.0.5.RELEASE\spring-restdocs-mockmvc-2.0.5.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\org\springframework\restdocs\spring-restdocs-core\2.0.5.RELEASE\spring-restdocs-core-2.0.5.RELEASE.jar;C:\Users\Oscar Haglund.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.9.5\jackson-databind-2.9.5.jar;C:\Users\Oscar Haglund.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.9.0\jackson-annotations-2.9.0.jar;C:\Users\Oscar Haglund.m2\repository\com\fasterxml\jackson\core\jackson-core\2.9.5\jackson-core-2.9.5.jar;C:\Users\Oscar Haglund.m2\repository\org\mockito\mockito-junit-jupiter\3.5.10\mockito-junit-jupiter-3.5.10.jar;C:\Users\Oscar Haglund.m2\repository\org\mockito\mockito-core\3.5.10\mockito-core-3.5.10.jar;C:\Users\Oscar Haglund.m2\repository\net\bytebuddy\byte-buddy\1.10.13\byte-buddy-1.10.13.jar;C:\Users\Oscar Haglund.m2\repository\net\bytebuddy\byte-buddy-agent\1.10.13\byte-buddy-agent-1.10.13.jar;C:\Users\Oscar Haglund.m2\repository\org\objenesis\objenesis\3.1\objenesis-3.1.jar;C:\Users\Oscar Haglund.m2\repository\org\junit\platform\junit-platform-launcher\1.7.0\junit-platform-launcher-1.7.0.jar;C:\dev\eclipse\configuration\org.eclipse.osgi\259\0.cp;C:\dev\eclipse\configuration\org.eclipse.osgi\257\0.cp" --patch-module "com.spacemetric.spring.jpmstest=C:\dev\source\spring-jpms-test\target\test-classes" --add-reads com.spacemetric.spring.jpmstest=ALL-UNNAMED org.eclipse.jdt.internal.junit.runner.RemoteTestRunner -version 3 -port 55245 -testLoaderClass org.eclipse.jdt.internal.junit5.runner.JUnit5TestLoader -loaderpluginname org.eclipse.jdt.junit5.runtime -classNames com.spacemetric.spring.jpmstest.TestControllerTest

Answer 1

First of all put the module-info.java in src/main/java, not in src/test/java. Also I have slightly changed it to:

module spring.jpms.test {
   requires spring.core;
   requires spring.context;
   requires spring.beans;
   requires spring.security.config;
   requires spring.security.web;
   requires spring.webmvc;
   requires spring.security.core;
   requires javax.servlet.api;
   requires spring.web;

   opens com.spacemetric.spring.jpmstest;

}

But anyway, this solves only "partially" because:

Welcome to a rather crude reality of modules and spring (or tools in general). Have a look here, where people have the same problems. The only viable solution I found is to do :

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <version>3.0.0-M5</version>
    <configuration>
        <useModulePath>false</useModulePath>
    </configuration>
</plugin>

This works with mvn clean install (and junit5), I haven't tried or played enough with intellij to make it work.