spring boot创建非web项目

我们如何启动一个main方法去运行它呢

使用也非常简单，我们只需要对springboot生成的代码做略微的修改即可。 使用SpringApplicationBuilder来创建SpringApplication，并且配置WebApplicationType为NONE，这样即使有tomcat依赖也不会创建http server， 执行run方法之后我们就得到了spring里的ApplicationContext,通过ApplicationContext.getBean能够拿到我们的任意一个bean，得到bean之后再调用我们想调用的方法，而不需要启动http server再用http接口去触发调用

 

@SpringBootApplication
public class DemoApplication {
    public static void main(String[] args) {
        ConfigurableApplicationContext applicationContext = new SpringApplicationBuilder(DemoApplication.class).web(WebApplicationType.NONE).run(args);
        applicationContext.getBean(HelloService.class).hello();
    }
}

 

Spring Boot 2.x
应用属性

spring.main.web-application-type=NONE
# REACTIVE, SERVLET

或SpringApplicationBuilder

@SpringBootApplication
public class MyApplication {

public static void main(String[] args) {
new SpringApplicationBuilder(MyApplication.class)
.web(WebApplicationType.NONE) // .REACTIVE, .SERVLET
.run(args);
}
}
其中WebApplicationType：

NONE - The application should not run as a web application and should not start an embedded web server.
REACTIVE - The application should run as a reactive web application and should start an embedded reactive web server.
SERVLET - The application should run as a servlet-based web application and should start an embedded servlet web server.

 

 

完美解决failed to configure a datasource: ‘url‘ attribute is not specified and no em

 https://blog.csdn.net/m0_67390969/article/details/124037486

 

 

 

 

 

 

 

https://blog.csdn.net/yetaodiao/article/details/126562162