Why spring-boot jersey with webflux cannot route my request?

Question

Trying to migrate my jersey-container-netty-http to spring-boot.

I used JAX-RS annotations @GET @Path("/test") routing my request, but it didn't work. I changed the annotations to @RestController and @GetMapping("/test"), which is part of spring framework, it worked just fine. Any idea?

Demo: https://github.com/SBZORRO/spring-boot-without-servlet.git

Request host/test get a Whitelabel Error Page.

Completed 404 NOT_FOUND
HTTP GET "/test" 
Mapped to ResourceWebHandler [classpath [META-INF/resources/], classpath [resources/], classpath [static/], classpath [public/]]
Resource not found
Resolved [ResponseStatusException: 404 NOT_FOUND] for HTTP GET /test

My spring-boot code： This won't work.

@Component
public class Test{
    @GET
    @Path("/test")
    public String test() {
        return "helloworld";
    }
}

Tried to add a jersey config, didn't work.

@Configuration
@ApplicationPath("/restful")
public class JerseyConfiguration extends ResourceConfig {
    public JerseyConfiguration() {
      register(Test.class);
    }
}

This works.

@RestController
public class Test{
    @GetMapping("/test")
    public String test() {
        return "helloworld";
    }
}

The jersey-container-netty-http server code that I need migrate to spring-boot:

// No @Component here, comparing to `spring-boot` version.
public class Test {
  @GET
  @Path("/test")
  public String test()
  {
    return "good";
  }
}

// Create server
ResourceConfig resourceConfig = new ResourceConfig();
resourceConfig.packages("packages name");
Channel server = NettyHttpContainerProvider.createServer(uri, resourceConfig, false);

pom.xml

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <!-- Exclude the Tomcat dependency -->
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jersey</artifactId>
            <exclusions>
                <!-- Exclude the Tomcat dependency -->
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>