spring - PreAuthorize not working on Controller

Question

I'm trying to define access rules at method-level but it's not working what so ever.

SecurityConfiguration

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
    @Override
    public void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication().
                withUser("user").password("user").roles("USER").and().
                withUser("admin").password("admin").roles("ADMIN");
    }
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                .sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                .antMatchers("/v2/**").authenticated()
                .and()
                .httpBasic()
                .realmName("Secure api")
                .and()
                .csrf()
                .disable();
    }
}

ExampleController

@EnableAutoConfiguration
@RestController
@RequestMapping({"/v2/"})
public class ExampleController {
    @PreAuthorize("hasAuthority('ROLE_ADMIN')")
    @RequestMapping(value = "/home", method = RequestMethod.GET)
    String home() {
        return "Hello World";
    }
}

Whenever I try to access /v2/home using user:user it executes just fine, shouldn't it give me an Access Denied error due to 'user' not having ROLE_ADMIN?

I'm actually thinking of ditching access rules at method-level and stick to http() ant rules, but I have to know why it's not working for me.

Answer 1

You have to add @EnableGlobalMethodSecurity(prePostEnabled = true) in your WebSecurityConfig.

You can find it here: http://www.baeldung.com/spring-security-expressions-basic

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {