Spring Security 6.0.2 Multiple Formlogin New update

Spring Security 6.0.2 provides a powerful and flexible authentication and authorization framework for Java applications. One of the key features of Spring Security is its ability to handle different types of authentication mechanisms, including form-based authentication.

To configure multiple form-based login pages in Spring Security 6.0.2, you can use the following steps:

1. Define multiple authentication entry points: You can create multiple implementations of the AuthenticationEntryPoint interface to handle different authentication scenarios, such as one for each login page. Each implementation should return the appropriate HTTP response status code (e.g., 401 for unauthorized access) and set the “WWW-Authenticate” header with the appropriate authentication scheme (e.g., “Basic” or “Form”).

2. Configure multiple login pages: You can configure multiple form-based login pages by creating multiple instances of the formLogin() method in your security configuration. Each instance should set the appropriate login page URL and authentication success handler.

3. Define multiple authentication filters: You can create multiple instances of the UsernamePasswordAuthenticationFilter class to handle form-based authentication for each login page. Each instance should be associated with the appropriate login page URL and authentication manager.

Here is an example configuration that demonstrates how to set up multiple form-based login pages in Spring Security 6.0.2:

java
@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    
    @Autowired
    private UserDetailsService userDetailsService;
    
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/admin/**").hasRole("ADMIN")
                .antMatchers("/user/**").hasRole("USER")
                .anyRequest().authenticated()
                .and()
            .exceptionHandling()
                .authenticationEntryPoint(customAuthenticationEntryPoint())
                .and()
            .formLogin()
                .loginPage("/login")
                .successHandler(customAuthenticationSuccessHandler())
                .and()
            .logout()
                .logoutSuccessUrl("/login?logout")
                .and()
            .addFilterAt(customAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class)
            .and()
            .formLogin()
                .loginPage("/login2")
                .successHandler(customAuthenticationSuccessHandler2())
                .and()
            .logout()
                .logoutSuccessUrl("/login2?logout")
                .and()
            .addFilterAt(customAuthenticationFilter2(), UsernamePasswordAuthenticationFilter.class);
    }
    
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService);
    }
    
    private AuthenticationEntryPoint customAuthenticationEntryPoint() {
        return new CustomAuthenticationEntryPoint("FormBased");
    }
    
    private AuthenticationEntryPoint customAuthenticationEntryPoint2() {
        return new CustomAuthenticationEntryPoint("FormBased2");
    }
    
    private AuthenticationSuccessHandler customAuthenticationSuccessHandler() {
        return new CustomAuthenticationSuccessHandler("/home");
    }
    
    private AuthenticationSuccessHandler customAuthenticationSuccessHandler2() {
        return new CustomAuthenticationSuccessHandler("/home2");
    }
    
    private UsernamePasswordAuthenticationFilter customAuthenticationFilter() throws Exception {
        UsernamePasswordAuthenticationFilter filter = new UsernamePasswordAuthenticationFilter();
        filter.setAuthenticationManager(authenticationManagerBean());
        filter.setFilterProcessesUrl("/login");
        filter.setAuthenticationSuccessHandler(customAuthenticationSuccessHandler());
        return filter;
    }
    
    private UsernamePasswordAuthenticationFilter customAuthenticationFilter2() throws Exception {
        UsernamePasswordAuthenticationFilter filter = new UsernamePasswordAuthenticationFilter();
        filter.setAuthenticationManager(authenticationManagerBean());
        filter.setFilterProcessesUrl("/login2");
        filter.setAuthenticationSuccessHandler(customAuthenticationSuccessHandler2());
        return filter;
    }
}

In this example, we define two form-based login pages (“/login” and “/