spring boot bilibili

spring boot bilibili idea找不到spring boot插件plugin，找不到spring Initializr

安装了付费版就OK，社区版本是没有的

springboot 约定大于配置，开发人员专注逻辑

为什么使用spring boot

spring cloud（云服务，微服务），sprig boot 相互成就；

This application has no explicit mapping for /error, so you are seeing this as a fallback

	4.0.0
	
		org.springframework.boot
		spring-boot-starter-parent
		2.5.1
		 
	
	com.example
	demo
	0.0.1-SNAPSHOT
	demo
	Demo project for Spring Boot
	
		1.8
	
	
		
			org.springframework.boot
			spring-boot-starter-web
		

		
			org.springframework.boot
			spring-boot-starter-test
			test
		
	

	
		
			
				org.springframework.boot
				spring-boot-maven-plugin
			
		
	

package com.example.demo;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/hello")
public class Hello {
    @RequestMapping("/say")
    public String sayHi(){
        return "Hello  World";
    }
}

package com.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

	public static void main(String[] args) {
		int a =1;
		System.out.println(123);
		SpringApplication.run(DemoApplication.class, args);
	}

}

端口占用问题：

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