Spring Security - Authorization Configuration

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Authorization Configuration

Sample Authorization Configuration

Here is a sample Authorization configuration:

SecurityConfiguration.java

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import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.factory.PasswordEncoderFactories;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.web.bind.annotation.RequestMethod;

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
    @Bean
    public PasswordEncoder passwordEncoder() {
        return PasswordEncoderFactories.createDelegatingPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .mvcMatchers("/",  "/static/**").permitAll()
                .mvcMatchers("/signup",  "/login", "/admin/login", "/about").permitAll()
                .mvcMatchers("/admin/**").access("hasRole('ADMIN')")
                .mvcMatchers("/user/**").hasAnyRole("USER", "ADMIN")
                .anyRequest().denyAll()
            .and()
                .formLogin();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("user")
                .password(passwordEncoder().encode("password"))
                .roles("USER")
                .and()
                .withUser("admin")
                .password(passwordEncoder().encode("password"))
                .roles("ADMIN");
    }
}
  • There are two users configured, ‘user’ with ‘USER’ Role and ‘admin’ with ‘ADMIN’ Role
  • URLs with pattern “/“, “/static/**”, “/signup”, “/login”, “/admin/login”, “/about” are all publicly accessible
  • You need to have role ‘ADMIN’ to access URLs with pattern “/admin/**”. Here access acceps Spel Expression as parameter
  • You need to have role ‘USER’ to access URLs with pattern “/user/**”

You can also use antMatchers method, however, mvcMatchers method is consider more secured because it is more relaxed when it comes to pattern match