title: Spring Boot -> UnsatisfiedDependencyException
body: <p>I'm trying to activate security with Oauth2 + JWT, but I'm not succeeding. When I try to run the application in Spring Boot, it's returning this error: Unsatisfied dependency expressed through field 'authenticationManager', I searched the internet and did not get something to help me.</p>
  
  <p>I'm using Spring Boot: 2.1.0.RELEASE</p>
  
  <p>follow my classes:</p>
  
  <p><strong>Resource Server:</strong></p>
  
  <pre><code>@Configuration
  @EnableWebSecurity
  @EnableResourceServer
  public class ResourceServerConfig extends ResourceServerConfigurerAdapter {
  
      @Autowired
      public void configure(AuthenticationManagerBuilder auth) throws Exception {
          auth.inMemoryAuthentication()
              .withUser("us3r").password("pwd").roles("ROLE");
      }
  
      @Override
      public void configure(HttpSecurity http) throws Exception {
          http.authorizeRequests()
                  .antMatchers("/categorias").permitAll()
                  .anyRequest().authenticated()
                  .and()
              .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
              .csrf().disable();
      }
  
      @Override
      public void configure(ResourceServerSecurityConfigurer resources) throws Exception {
          resources.stateless(true);
      }
  
  }
  </code></pre>
  
  <p><strong>Authorization Server:</strong></p>
  
  <pre><code>@Configuration
  @EnableAuthorizationServer
  @Component
  public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {
  
      @Autowired
      @Qualifier("authenticationManagerBean")
      private AuthenticationManager authenticationManager;
  
      @Override
      public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
          clients.inMemory().withClient("mobile").secret("p@sswd").scopes("read", "write")
                  .authorizedGrantTypes("password", "refresh_token").accessTokenValiditySeconds(20)
                  .refreshTokenValiditySeconds(3600 * 24);
      }
  
      @Override
      public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
          endpoints.tokenStore(tokenStore()).accessTokenConverter(accessTokenConverter()).reuseRefreshTokens(false)
                  .authenticationManager(authenticationManager);
      }
  
      @Bean
      public JwtAccessTokenConverter accessTokenConverter() {
          JwtAccessTokenConverter accessTokenConverter = new JwtAccessTokenConverter();
          accessTokenConverter.setSigningKey("algaworks");
          return accessTokenConverter;
      }
  
      @Bean
      public TokenStore tokenStore() {
          return new JwtTokenStore(accessTokenConverter());
      }
  
  }
  </code></pre>
  
  <p>Stacktrace:</p>
  
  <pre><code>org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'authorizationServerConfig': Unsatisfied dependency expressed through field 'authenticationManager'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.security.authentication.AuthenticationManager' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=authenticationManagerBean)}
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:596) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:90) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:374) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1378) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:575) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:498) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:846) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:863) ~[spring-context-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:546) ~[spring-context-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.1.0.RELEASE.jar:2.1.0.RELEASE]
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.0.RELEASE.jar:2.1.0.RELEASE]
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.0.RELEASE.jar:2.1.0.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.0.RELEASE.jar:2.1.0.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.0.RELEASE.jar:2.1.0.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.0.RELEASE.jar:2.1.0.RELEASE]
      at com.example.algamoney.api.AlgamoneyApiApplication.main(AlgamoneyApiApplication.java:10) [classes/:na]
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181]
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_181]
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_181]
      at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_181]
      at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.0.RELEASE.jar:2.1.0.RELEASE]
  Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.security.authentication.AuthenticationManager' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true), @org.springframework.beans.factory.annotation.Qualifier(value=authenticationManagerBean)}
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1646) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1205) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1166) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:593) ~[spring-beans-5.1.2.RELEASE.jar:5.1.2.RELEASE]
      ... 24 common frames omitted
  </code></pre>