Spring boot enable/disable embedded tomcat with pr

问题:

I'm writing a Spring Boot application that uses one of several @Configuration classes depending on which @Profile is set in the application.propertiesfile.

One of those Configuration classes uses a REST interface, and therefore I'm including spring-boot-starter-web as a dependency.

This starts up an embedded Tomcat instance, which is fine.

The problem is, the other profiles don't need an embedded server (e.g. I'm using JMS to handle incoming messages instead of REST).

Is there any way to stop the @SpringBootApplication from starting up Tomcat by default, and only using it for the REST Configuration class? E.g., by annotating that class with @EnableWebMVC

Here's an example of my @Configurationclasses:

REST:

@Profile({"REST"})
@Configuration
@EnableWebMvc
public class HttpConfiguration{
 .
 .
 .
}

JMS:

@Profile({"JMS"})
@Configuration
@EnableJms
public class JMSConfiguration{
 .
 .
 .
}

Thanks

回答1:

Use

@SpringBootApplication(exclude = {EmbeddedServletContainerAutoConfiguration.class, 
                                  WebMvcAutoConfiguration.class})

to exclude Spring Boot's auto-configuration for embedded servlet containers. Additionally, you need to set the following property for the non-REST cases, so that Spring Boot won't try to start a WebApplicationContext (which needs a servlet container):

spring.main.web-environment=false

Then enable the embedded Tomcat in your REST profile by importing EmbeddedServletContainerAutoConfiguration.class (this delays the autoconfiguration until after the REST profile has been loaded:

@Profile({"REST"})
@Configuration
@Import(EmbeddedServletContainerAutoConfiguration.class)
public class HttpConfiguration {
    // ...
}

If you are using any EmbeddedServletContainerCustomizers, you also need to import EmbeddedServletContainerCustomizerBeanPostProcessorRegistrar.class.

回答2:

The answers from @hzpz and @orid set me on the right track.

I needed to add

@SpringBootApplication(exclude = {EmbeddedServletContainerAutoConfiguration.class, 
WebMvcAutoConfiguration.class})

and set:

spring.main.web-environment=false

in my application.properties file for the non-Rest cases.

回答3:

As of Spring Boot 2.0 only spring.main.web-application-type=none in the relevant profile do the trick.

If you use a multi-document application.yml with Spring Boot 2.0, adding this block and replacing no-web-profile-name with the profile that shouldn't have an embedded web server should work:

---
spring:
  profiles: no-web-profile-name
  main:
    web-application-type: none