Configure JDBC Authentication in Spring Boot

Question

Goal: Add jdbc authentication to spring boot with default security configurations.

Source can be found here

Per Spring Boot Docs

configure the global AuthenticationManager by autowiring an AuthenticationManagerBuilder into a method in one of your @Configuration classes

and Spring Security Docs with example:

@Autowired
private DataSource dataSource;

@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
    auth
        .jdbcAuthentication()
            .dataSource(dataSource)
            .withDefaultSchema()
            .withUser("user").password("password").roles("USER").and()
            .withUser("admin").password("password").roles("USER", "ADMIN");
}

Given the above, added the following ( found here ):

@Configuration
@EnableAuthorizationServer
@EnableResourceServer
public class AuthenticationManagerConfig {

    @Autowired
    private DataSource dataSource;

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.jdbcAuthentication()
                .dataSource(dataSource)
                .withDefaultSchema()
                .withUser("user").password("password").roles("ROLE_USER").and()
                .withUser("admin").password("password").roles("ROLE_USER", "ROLE_ADMIN");
    }
}

with resulting error:

java.lang.IllegalStateException: Cannot apply org.springframework.security.config.annotation.authentication.configurers.provisioning.JdbcUserDetailsManagerConfigurer@13404f75 to already built object

and further up the logs, we can see the auto config doing it's thing when it shouldn't be:

2016-02-02 22:52:48.047 DEBUG 30487 --- [ost-startStop-1] eGlobalAuthenticationAutowiredConfigurer : Eagerly initializing {org.springframework.boot.autoconfigure.security.SpringBootWebSecurityConfiguration=org.springframework.boot.autoconfigure.security.SpringBootWebSecurityConfiguration$$EnhancerBySpringCGLIB$$627430a8@78acaa86}
2016-02-02 22:52:48.074 DEBUG 30487 --- [ost-startStop-1] .s.BootGlobalAuthenticationConfiguration : Eagerly initializing {user=com.msyla.usergreeter.user.User$$EnhancerBySpringCGLIB$$3cd414fd@73128671, coreConfig=com.msyla.usergreeter.user.core.config.CoreConfig$$EnhancerBySpringCGLIB$$30c07250@6ed3c66b}
2016-02-02 22:52:48.095  INFO 30487 --- [ost-startStop-1] b.a.s.AuthenticationManagerConfiguration : 

Using default security password: 5b33158f-156d-43f4-892f-6c452f15e1cc

Question: All that is being asked here is to have default boot configurations with the exception of where the user is being stored, jdbc instead of in memory. Am I doing it incorrectly? Are the docs wrong? I have tried several other routes to no avail.

Thanks in advance!

Answer 1

After much work, I recalled how to properly work with spring, that is to step through their code to get a better understanding in surgically addressing my needs. With some investigation, determined the class in need of modification/extension. Resulting in:

@Configuration
@EnableAuthorizationServer
@EnableResourceServer
public class AuthenticationManagerConfig extends GlobalAuthenticationConfigurerAdapter {

    @Autowired
    private DataSource dataSource;

    @Override
    public void init(AuthenticationManagerBuilder auth) throws Exception {
        auth.jdbcAuthentication().dataSource(dataSource);
    }
}

The above will instruct spring to look up via jdbc while keeping everthing else auto configured.

Answer 2

if you want to override the default security configuration, make sure you are extending the WebSecurityConfigurerAdapter class

@Configuration
@EnableAuthorizationServer
@EnableResourceServer
public class AuthenticationManagerConfig extends WebSecurityConfigurerAdapter
{
    // ...
}

and remove the prefix ROLE_ on your role definition, it will added automatically by spring.