Is it possible to disable an autoconfiguration class from another autoconfiguration class in spring boot?

Question

I\'m working on a data access library and would like to be able to include it as a dependency in other projects with minimal configuration (ideally just autowire a repo). In par

Answer 1

There's a very handy interface called AutoConfigurationImportFilter, which decides on which auto-configuration should be loaded. This is also how @ConditionalOnClass annotation works.

In your library, add the following class:

public class MyExclusionFilter
        implements AutoConfigurationImportFilter {

    private static final Set SHOULD_SKIP = new HashSet<>(
            Arrays.asList("org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration",
                    "org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration"));

    @Override
    public boolean[] match(String[] classNames, AutoConfigurationMetadata metadata) {
        boolean[] matches = new boolean[classNames.length];

        for(int i = 0; i< classNames.length; i++) {
            matches[i] = !SHOULD_SKIP.contains(classNames[i]);
        }
        return matches;
    }
}

This class needs to be registered in spring.factories to work. Add the following line in the library into META-INF/spring.factories:

org.springframework.boot.autoconfigure.AutoConfigurationImportFilter=com.mycompany.db.MyExclusionFilter

You don't need to make any changes to the dependent project. Just add the library as a dependency and the auto-configuration you specified won't be loaded for the whole application.

NOTE: You can add more than one import filter, only the auto-configuration classes not filtered in all import filters will get loaded.

For details, see the source code of org.springframework.boot.autoconfigure.AutoConfigurationImportSelector#filter and org.springframework.boot.autoconfigure.condition.OnClassCondition.java classes.