Setup Spring security to redirect user to login page if not authenticated

Question

I have a Spring boot application with Spring security.

My problem is similar to this one, but in my case I want to redirect the user to the login page if he's not authenticated when he tries to access any page of the application.

The following image shows the architecture of the application:

My config class looks like this:

@EnableWebSecurity
@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/**").hasAnyRole("USER")
                .and().formLogin().loginPage("/login").permitAll()
                .and().authorizeRequests().antMatchers("/resources/**").permitAll().anyRequest().permitAll();
    }

    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication().withUser("user").password("password").roles("USER");
    }

}

With this configuration, no resource will be loaded. How can I configure my project to redirect the user to the login page if he's not authenticated and at the same time having my resources folder loaded?

Answer 1

plz checkout configure method

@Override
  public void configure(HttpSecurity http) throws Exception {
    http
        .authorizeRequests()
        .antMatchers("/resources/**").permitAll()
        .antMatchers("/login*").permitAll()
        .anyRequest().authenticated()
        .and().formLogin().loginPage("/login");
  }

and implements WebMvcConfigurer Class like below

@Configuration
@EnableWebMvc
public class WebMvcConfiguration implements WebMvcConfigurer {

  @Override
  public void addResourceHandlers(final ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/static/**")
        .addResourceLocations("classpath:/static/");
  }
}

addResourceHandlers means find resources in /static.

Answer 2

Spring security is not allowing your css when a "GET" request to it is made allow it by changing the following line to the next line

this line = .antMatchers("/*.js").permitAll()

this line = .antMatchers("/*.js", "/*.css").permitAll()