Problems with Custom Spring Security Filter Not Executing in Java 17 Application
I'm sure I'm missing something obvious here, but I'm working on a project and hit a roadblock... I'm currently working on a Spring Boot application using Java 17, and I'm working with an scenario where my custom security filter seems to be bypassed entirely. I have set up a security configuration class, but when I hit the endpoints that should trigger the filter, it doesn't seem to execute and the request goes through without any authentication or authorization checks. Here's a simplified version of my security configuration: ```java import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; 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.web.authentication.UsernamePasswordAuthenticationFilter; @Configuration @EnableWebSecurity public class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http .csrf().disable() .authorizeRequests() .antMatchers("/public/**").permitAll() .anyRequest().authenticated() .and() .addFilterBefore(new CustomAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class); } } ``` And here is my filter class: ```java import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.web.filter.OncePerRequestFilter; public class CustomAuthenticationFilter extends OncePerRequestFilter { @Override protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException { // Custom logic here System.out.println("Filter triggered"); filterChain.doFilter(request, response); } } ``` I've tried several things to troubleshoot this. I ensured that the filter is correctly annotated, and I even added a simple `System.out.println()` statement to verify if it's executing. I also checked the order of the filters and confirmed that my filter is registered before the `UsernamePasswordAuthenticationFilter` as intended. However, the output is never printed, leading me to believe that the filter is never being hit. The application starts without any errors, and I can access the public endpoints without issues, but I need to make sense of why the filter doesn't activate at all. Any insights on what might be going wrong? I'm using Spring Security version 5.6.0. Thank you! For context: I'm using Java on macOS. Is there a better approach? What's the best practice here? My development environment is Windows 11. What's the correct way to implement this?