Spring Boot 之Hello Word

Spring Boot官网：http://projects.spring.io/spring-boot/

环境准备：maven 3.3.5、jdk8、Idea

1.创建maven项目工程

2.引入starters

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.11.RELEASE</version>
</parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

3.创建主程序

@SpringBootApplication
public class HelloWorldMainApplication {

    public static void main(String[] args){
        //Spring 应用启动起来
        SpringApplication.run(HelloWorldMainApplication.class, args);
    }
}

4.创建一个Controller

@Controller
public class HelloController {

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

5.运行主方法，并在浏览器输入：localhost:8080/hello ，就会出现Hello Word!

6.也可以打包成jar包 进行部署

url:https://docs.spring.io/spring-boot/docs/1.5.11.RELEASE/reference/htmlsingle/#getting-started-first-application-executable-jar

这个插件，可以将应用打包成一个jar包 

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