一、HelloWorld

1、创建maven项目

2、设定pom文件加入：

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>1.5.3.RELEASE</version>

</parent>

<dependencies>

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

</dependency>

</dependencies>

3、创建类：SampleController

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

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

import org.springframework.web.bind.annotation.ResponseBody;

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

@RestController

@EnableAutoConfiguration

public class SampleController  {

@RequestMapping("/")

@ResponseBody

String home() {

return "Hello World!";

}

public static void main(String[] args) throws Exception {

SpringApplication.run(SampleController .class, args);

}

}

4、运行main方法。springboot启动、

5、在浏览器输入：http://localhost:8080/ 

返回hello world