【spring-boot】配置基础目录与启动

# POM.XML


<!--继承父项目spring-boot-starter-parent的依赖管理-->
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.5.6</version>
  </parent>

<!--导入web配置 启动器-->
  <dependencies>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>
   </dependencies>

# 创建启动主程序类   :: mainApplication   启动项目直接启动这个主程序


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


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

# 第一个接口  

package start.controller;

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


@RestController
public class helloSpring {

    @RequestMapping("/hello")
    public String helloworld(){
        return "hello springboot";
    }

}