将Spring Data Repo软件包设为本地时出现java.lang.IllegalAccessError

Question

I am trying to use packages by feature (As is done here for example). I created a com.company.project.user package with my UserRepository and UserService interfaces, making only the UserService public. I also have a subpackage web that has the UserController and a UserDto .

In this web package, I have a test:

@RunWith(SpringRunner.class)
@SpringBootTest
@AutoConfigureJsonTesters
public class UserDtoTest {

    private JacksonTester<UserDto> tester;

    @Test
    public void testSerialize() throws IOException {
        String id = UUID.fromString("939d1c2f-b1f4-49c6-9839-f088401f6781").toString();
        String username = "wim.deblauwe";
        UserRole role = UserRole.ADMIN;
        JsonContent<UserDto> content = tester.write(new UserDto(id, username, role));
        assertThat(content).isEqualToJson("userdto.json");
    }
}

This uses Spring Boot 1.4.0.M3. This test runs fine when I run it alone or when I run it will all the tests in IntelliJ. However, when I run it from Maven (version 3.3.9), I get this problem:

java.lang.IllegalAccessError: class com.company.project.user.$Proxy169 cannot access its superinterface com.company.project.user.UserRepository

Bigger part of the stack trace:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Invocation of init method failed; nested exception is java.lang.IllegalAccessError: class com.company.project.user.$Proxy169 cannot access its superinterface com.company.project.user.UserRepository at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBe anFactory.java:197) at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:187) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1208) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1048) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1018) at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:834) at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ... 59 common frames omitted Caused by: java.lang.IllegalAccessError: class com.company.project.user.$Proxy169 cannot access its superinterface com.company.project.user.UserRepository at java.lang.reflect.Proxy.defineClass0(Native Method) at java.lang.reflect.Proxy.access$300(Proxy.java:228) at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:642) at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:557) at java.lang.reflect.WeakCache$Factory.get(WeakCache.java:230) at java.lang.reflect.WeakCache.get(WeakCache.java:127) at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:419) at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:719) at org.springframework.aop.framework.JdkDynamicAopProxy.getProxy(JdkDynamicAopProxy.java:122) at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:109) at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:222) at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:266) at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:252) at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:92) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) ... 71 common frames omitted

To make it work in Maven as well, I just have to change:

interface UserRepository extends CrudRepository<User, UserId>, UserRepositoryCustom {
    Optional<User> findByUsername(String username);
}

to

public interface UserRepository extends CrudRepository<User, UserId>, UserRepositoryCustom {
    Optional<User> findByUsername(String username);
}

Any idea why I need to do this? Could it be a bug in Spring Data?

Answer 1

This is caused by a bug in Spring Boot . There are a couple of workarounds:

1. Mark any tests that use WebEnvironment.RANDOM_PORT or WebEnvironment.DEFINED_PORT with @DirtiesContext .
2. Switch to Undertow or Jetty.