1.匯入springboot相關的依賴

開啟pom.xml檔案，新增如下內容

	<!-- Inherit defaults from Spring Boot -->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.6.RELEASE</version>
	</parent>

	<!-- Add typical dependencies for a web application -->
 

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

2.編寫一個主程式，啟動SpringBoot應用

package com.air;

import org.springframework.boot.SpringApplication;
 

import org.springframework.boot.autoconfigure.SpringBootApplication;

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

3.編寫相關的Controller、Service

@Controller
 

public class HelloController {

    @ResponseBody
    @RequestMapping("/hello")
    public String hello() {
        return "Hello world!";
    }
}

4.測試

執行main方法：

	2018-10-24 21:44:01.858  INFO 17944 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
	2018-10-24 21:44:01.861  INFO 17944 --- [           main] com.air.HelloWorldMainApplication        : Started HelloWorldMainApplication in 1.659 seconds (JVM running for 3.059)

看到tomcat已經啟動

瀏覽器中輸入下面的地址測試：

http://localhost:8080/hello

瀏覽器會輸出Hello world!

至此，helloworld 工程已經成功完成