1.建立一個Maven專案匯入相應的依賴

<project xmlns="http://maven.apache.org/POM/4.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<groupId>com.xx</groupId>
	<artifactId>springboot-sgg</artifactId>
	<version>0.0.1-SNAPSHOT</version>

	<!-- 匯入SpringBoot的父依賴,由他來管理依賴版本 -->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.5.9.RELEASE</version>
		<relativePath />
	</parent>

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

2.建立一個主程式類，這裡需要注意我的這個主程式類是放在com.xx這個包下的，會自動掃描com.xx下的所有包

package com.xx;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/*
 * @SpringBootApplication用於標註一個主程式類,其底層@Import註解會將主配置類所在包下的所有子包裡面的所有元件掃描到Spring容器中
 */
@SpringBootApplication
public class HelloWorldMainApplication {

	public static void main(String[] args) {
		//Spring啟動入口
		SpringApplication.run(HelloWorldMainApplication.class, args);
	}
}
 

3.寫一個Controller用來測試

package com.xx.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class HelloController {

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

4.執行主程式類，輸入http://localhost:8080/hello