spring boot入门程序

pom文件加入的依赖：

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.RELEASE</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

文件目录结构：

helloController代码：

package controller;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.ArrayList;
import java.util.List;
/**
 * @Information:
 * @Author: HeHaoYuan
 * @Date: Created at 9:02 on 2020/4/20
 * @Package_Name: controller
 */
@Controller
@SpringBootApplication
@Configuration
 public class helloController {

    @RequestMapping("/hello")
    @ResponseBody
    public String hello(){
        return "hello world！";
    }
    @RequestMapping("/list")
    @ResponseBody
    public List printList(){
        ArrayList list = new ArrayList();
        list.add("2");
        list.add("3");
        return list;

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

}