Unable to start ReactiveWebApplicationContext due to missing ReactiveWebServerFactory bean.

Unable to start reactive web server; nested exception is org.springframework.context.ApplicationContextException: Unable to start ReactiveWebApplicationContext due to missing ReactiveWebServerFactory bean.

 若是是非web項目的話：

spring:
   main:
     web-application-type: none

若是是web項目：

添加webflux的依賴

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
    <version>2.0.3.RELEASE</version>
</dependency>