06-Jun-2019 11:33:20.494 SEVERE [main] org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class [org.springframework.web.context.ContextLoaderListener]
 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration': Injection of autowired dependencies failed; nested exception is java.lang.IllegalStateException: @Order on WebSecurityConfigurers must be unique. Order of 100 was already used on adil.java.schoolmaven.config.CustomWebSecurityConfigurerAdapter$$EnhancerBySpringCGLIB$$70d2f200@150fad6, so it cannot be used on adil.java.schoolmaven.config.SpringSecurityConfig$$EnhancerBySpringCGLIB$$1c95958f@7bd7012d to

package adil.java.schoolmaven.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.password.PasswordEncoder;
import org.springframework.security.web.authentication.www.BasicAuthenticationFilter;


@Configuration
@EnableWebSecurity
public class CustomWebSecurityConfigurerAdapter extends WebSecurityConfigurerAdapter {
 
    @Autowired
    private MyBasicAuthenticationEntryPoint authenticationEntryPoint;
 
    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
          .withUser("admin").password(passwordEncoder().encode("1234"))
          .authorities("ROLE_ADMIN");
    }
 
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
          .antMatchers("/securityNone").permitAll()
          .anyRequest().authenticated()
          .and()
          .httpBasic()
          .authenticationEntryPoint(authenticationEntryPoint);
 
        http.addFilterAfter(new CustomFilter(),
          BasicAuthenticationFilter.class);
    }
 
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}

package adil.java.schoolmaven.config;

import java.io.IOException;
import java.io.PrintWriter;
import javax.naming.AuthenticationException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.security.web.authentication.www.BasicAuthenticationEntryPoint;
import org.springframework.stereotype.Component;

@Component
public class MyBasicAuthenticationEntryPoint extends BasicAuthenticationEntryPoint {
 
    @Override
    public void commence
      (HttpServletRequest request, HttpServletResponse response, AuthenticationException authEx) 
      throws IOException, ServletException {
        response.addHeader("WWW-Authenticate", "Basic realm=\"" + getRealmName() + "\"");
        response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
        PrintWriter writer = response.getWriter();
        writer.println("HTTP Status 401 - " + authEx.getMessage());
    }
 
    @Override
    public void afterPropertiesSet() throws Exception {
        setRealmName("Baeldung");
        super.afterPropertiesSet();
    }
}