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about spring boot how to disable web environment correctly

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南笙 2020-12-05 18:53

Spring boot non-web application, when start it has below error

Caused by: org.springframework.context.ApplicationContextException: Unable to start EmbeddedWe
2条回答
  • -上瘾入骨i
    -上瘾入骨i (楼主)
    2020-12-05 19:28

    This answer is obsolete. Please note the other answer for Spring Boot 2.0

    Original answer for Spring Boot 1.x:

    The reason this config is not working because these are two different instances:

    new SpringApplication().setWebEnvironment(false); 
SpringApplication.run(SpringBootDisableWebEnvironmentApplication.class, args);

    You are disabling setWebEnvironment(false) in new SpringApplication() object and calling static method run() on SpringApplication.run(...) which is different one.

    I figured out 3 ways to do this:

    @SpringBootApplication
public class SpringBootDisableWebEnvironmentApplication implements CommandLineRunner{


    public static void main(String[] args) throws Exception {

//      Method#1: Using SpringApplicationBuilder.

        SpringApplication springApplication = 
                new SpringApplicationBuilder()
                .sources(SpringBootDisableWebEnvironmentApplication.class)
                .web(false)
                .build();

        springApplication.run(args);

//--------------------------------------------------------      

//      Method#2: Using SpringBootDisableWebEnvironmentApplication.     

//      SpringBootDisableWebEnvironmentApplication springBootDisableWebEnvironmentApplication = 
//              new SpringBootDisableWebEnvironmentApplication();
//      springBootDisableWebEnvironmentApplication.run(args);

//--------------------------------------------------------      

//      Method#3: Using SpringApplication().

//      SpringApplication springApplication = new SpringApplication();
//      springApplication.setWebEnvironment(false);
//      
//      Set sources = new HashSet<>();
//      sources.add(SpringBootDisableWebEnvironmentApplication.class);
//      springApplication.setSources(sources);
//      springApplication.run(args);

//--------------------------------------------------------  

    }

    @Override
    public void run(String... arg0) throws Exception {
        System.out.println("Hello, Spring Boot gives many options ;)");
    }
}



    Here is the complete working Project.
    


    And you don't need to exclude below config:
    


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

    


    Because you don't have spring-boot-starter-web dependency in your pom.xml
    


    
    org.springframework.boot
    spring-boot-starter-web
    

    
    
    
             
    
                                                        
    
            
            
    
              
                
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