Spring + H2DB-Web-Console: "This method cannot decide whether these patterns are Spring MVC patterns or not."

My ultimate goal is the use the h2db-web-console in my application, as part of my local dev environment.

I'm getting the error:

Caused by: java.lang.IllegalArgumentException: This method cannot decide whether these patterns are Spring MVC patterns or not. If this endpoint is a Spring MVC endpoint, please use requestMatchers(MvcRequestMatcher); otherwise, please use requestMatchers(AntPathRequestMatcher).

This is because there is more than one mappable servlet in your servlet context: {org.h2.server.web.JakartaWebServlet=[/my-h2-console/*], org.springframework.web.servlet.DispatcherServlet=[/]}.

For each MvcRequestMatcher, call MvcRequestMatcher#setServletPath to indicate the servlet path.

While this sounds pretty descriptive it drives me crazy, since it appears it doesn't matter which path I use for JakartaWebServlet=[/my-h2-console/*], since DispatcherServlet=[/] simply matches everything. that starts with "/"...which is everything.

...please use requestMatchers(MvcRequestMatcher); otherwise, please use requestMatchers(AntPathRequestMatcher)...

Well, those are deprecated with Spring 3.x.x patchnotes so I've tried using the RequestMatcher(this should be automatically be used with 'authorize') instead.

Security-Config

    @Bean
    @Order(GENERAL_SECURITY_CONFIGURATION_ORDER)
    fun securityFilterChain(http: HttpSecurity): SecurityFilterChain {
        http {
            ...
            }
            securityMatcher("/**")
            headers { frameOptions { disable() } }
            csrf { ignoringRequestMatchers("/my-h2-console/**") }

            authorizeRequests {
                authorize("/my-h2-console/**", permitAll)
                authorize("/ping", permitAll)
                authorize("/**", denyAll)
            }
        }
        return http.build()
    }

pom.xml

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope> <!-- Should be "test", revert later -->
        </dependency>

application.yml

spring:
  h2:
    console:
      enabled: true
      path: /my-h2-console
      settings:
        trace: false
        web-allow-others: false
  datasource:
    url: jdbc:h2:mem:testdb
    driverClassName: org.h2.Driver
    username: sa
    password:
  jpa:
    database-platform: org.hibernate.dialect.H2Dialect
  sql:
    init:
      mode: embedded
      schema-locations: classpath:sql/schema.testdb.local.sql

Please keep in mind, I'm new to spring-boot in general, so please be gentle. Any kind of information regarding this topic is kindly appreciated. :)

I tried:

• changing the paths/names of the servlets as stated above
• changed the scope of my H2DB
• Tried different configurations in my Security-Config

=> Only turning off/on

spring:
  h2:
    console:
      enabled: true

seems to bring any change.

This configuration helped me to resolve H2 issue:

@Configuration
public class SecurityConfig {

    // My enpdoints start from /v1 so this pattern is ok for me
    private static final String API_URL_PATTERN = "/v1/**";

    @Bean
    public SecurityFilterChain getSecurityFilterChain(HttpSecurity http,
                                                      HandlerMappingIntrospector introspector) throws Exception {
        MvcRequestMatcher.Builder mvcMatcherBuilder = new MvcRequestMatcher.Builder(introspector);

        http.csrf(csrfConfigurer ->
                csrfConfigurer.ignoringRequestMatchers(mvcMatcherBuilder.pattern(API_URL_PATTERN),
                        PathRequest.toH2Console()));

        http.headers(headersConfigurer ->
                headersConfigurer.frameOptions(HeadersConfigurer.FrameOptionsConfig::sameOrigin));

        http.authorizeHttpRequests(auth ->
                auth
                        .requestMatchers(mvcMatcherBuilder.pattern(API_URL_PATTERN)).permitAll()
                        //This line is optional in .authenticated() case as .anyRequest().authenticated()
                        //would be applied for H2 path anyway
                        .requestMatchers(PathRequest.toH2Console()).authenticated()
                        .anyRequest().authenticated()
        );

        http.formLogin(Customizer.withDefaults());
        http.httpBasic(Customizer.withDefaults());

        return http.build();
    }
}

More info.

Updated code for H2 console to work properly in browser.

Also PathRequest.toH2Console() could be used instead of AntPathRequestMatcher.antMatcher("/h2-console/**")