SpringBoot——HelloWorld

1. 创建Maven项目

2. pom.xml中加入

       
           org.springframework.boot
           spring-boot-starter-parent
           2.4.1
       
   
       
           
               org.springframework.boot
               spring-boot-starter-web
           
       
   
       
           
               
                   org.springframework.boot
                   spring-boot-maven-plugin
               
           
       

    

3.  文件目录结构
   

4. MainApplication

   @SpringBootApplication
   public class MainApplication {
   
       public static void main(String[] args) {
           SpringApplication.run(MainApplication.class, args);
       }
   
   }

    

5.  HelloController

   @RestController
   public class HelloController {
   
       @RequestMapping("/")
       public String index(){
           return "Hello, Spring Boot!";
       }
   
   }

    

6.  运行MainApplication