Spring-ReactiveWeb! Netty doesnt start after add Swagger 2 documentation

Swagger 3 will be soon released, and it includes support for netty.

By that time, you can use the snapshot version:

{
repositories {
    maven {
        url 'http://oss.jfrog.org/artifactory/oss-snapshot-local/'
    }
}
dependencies {
    compile 'io.springfox:springfox-swagger2:3.0.0-SNAPSHOT'
    compile 'io.springfox:springfox-swagger-ui:3.0.0-SNAPSHOT'
    compile 'io.springfox:springfox-spring-webflux:3.0.0-SNAPSHOT'
}

}

and you enable it with @EnableSwagger2WebFlux

source: https://github.com/springfox/springfox/issues/1773

Unfortunetely swagger does not support spring webflux yet. Only solution here https://github.com/armdev/springboot2-swagger , but again you cant use full webflux API, you should go with unblocking tomcat.