[FIXED] Could not autowire authentication manager in Spring Boot 2.0.0

Issue

So I've been trying to implement oAuth2 in a simple Spring MVC app.

In the guide I was following, in their AuthorizationServerConfigurerAdapter they @Autowired an AuthenticationManager. They used Spring Boot version 1.5.2.

I wanted to use Spring Boot 2.0.0 as this is the latest version so I wanted to learn the latest practices. However, in my pom.xml when I change:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.2.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

to:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.0.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

All of a sudden, I can't autowire AuthenticationManager.

Could not autowire. No beans of 'AuthenticationManager' type found.

Could someone come up with a solution to this?

Thanks!

Solution

If you want to continue with boot starter packages, according to release notes you need to override authanticationManagerBean method inside the WebSecurityConfigurerAdapter . Here code sample :

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

}

Answered By - erhanasikoglu
Answer Checked By - Terry (JavaFixing Volunteer)