Could not autowire field: private org.springframework.security.authentication.AuthenticationManager

Question

I\'m trying to create OAuth2 Server Provider using this tutorial Spring OAuth2 . The main difference between example and my project - I do not use Spring Boot. I try to split th

Answer 1

After you add the bean You should remove @Autowired from authenticationManager

  private AuthenticationManager authenticationManager;
  @Bean
  public AuthenticationManager customAuthenticationManager() throws Exception {
      return authenticationManager();
  }

Answer 2

Create another WebSecurityConfigurerAdapter class that will be the "main" configuration and add the following code in order to expose an AuthenticationManager bean:

@Bean
public AuthenticationManager customAuthenticationManager() throws Exception {
  return authenticationManager();
}

Answer 3

Solution: Just remove protected void configure(AuthenticationManagerBuilder auth) method. According to javadoc I don't need this method.

Answer 4

add this line in your servlet-context.xml

<beans:bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>