springboot项目搭建0010-Hello World

绝地灬酷狼 2022-04-02 03:53 197阅读 0赞

项目地址：[https://github.com/wenrongyao/springboot-demo.git][https_github.com_wenrongyao_springboot-demo.git]

摘要：基于maven搭建的一个springboot hello world 入门程序

1、pom.xml加入springboot的依赖

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.6.RELEASE</version>
        </parent>
    
        <dependencies>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>

2、建立启动类

启动类的位置最后放在group id下面，这样可以自动扫描group id下面的组件

![2019010310362842.png][]

启动类：SpringbootDemoApplication

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    /**
     * Created by rongyaowen
     * on 2019/1/3.
     */
    @SpringBootApplication
    public class SpringbootDemoApplication {
        public static void main(String[] args) {
            SpringApplication.run(SpringbootDemoApplication.class);
        }
    }

3、控制器HelloWorldController

import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * Created by rongyaowen
     * on 2019/1/3.
     */
    @Controller
    public class HelloWorldController {
    
        @RequestMapping("/hello")
        @ResponseBody
        public String sayHello() {
            return "Hello World!";
        }
    
    }

4、效果

启动项目，在地址栏输入localhost:8080/hello

![20190103104148264.png][]

[https_github.com_wenrongyao_springboot-demo.git]: https://github.com/wenrongyao/springboot-demo.git
[2019010310362842.png]: /images/20220402/142a0981a99e49b2b75941f5202d8d0b.png
[20190103104148264.png]: /images/20220402/7e54a2054d9545f7ad809a3eb7280694.png