Spring Boot入门第一天:Hello, Spring Boot!

原文链接

 

 

1. 新建一个Maven Web项目。

2. 配置pom.xml文件。

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<?xml version="1.0" encoding="UTF-8"?>
<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.yws710.springboot</groupId>
    <artifactId>demo1</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.4.RELEASE</version>
    </parent>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>

3. 编写控制器类

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package com.yws710.springboot.demo1.controller;
 
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
 
/**
 * Created by Administrator on 2017/7/19.
 */
@Controller
public class HelloController {
 
    @ResponseBody
    @RequestMapping("/hello")
    public String hello() {
        return "Hello, Spring Boot!";
    }
}

4. 编写启动类

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package com.yws710.springboot.demo1;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
/**
 * Created by Administrator on 2017/7/19.
 */
@SpringBootApplication
public class App {
 
    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }
 
}

5. 启动项目。只需要运行上面代码的main方法,运行成功,控制台输出如下:

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"D:\Program Files\Java\jdk1.7.0_67\bin\java" ...
 
  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.4.RELEASE)
 
省略部分信息
2017-07-20 00:16:44.849  INFO 5388 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-07-20 00:16:44.858  INFO 5388 --- [           main] com.yws710.springboot.demo1.App          : Started App in 5.835 seconds (JVM running for 6.364)

6. 在浏览器中输入 http://localhost:8080/hello,显示结果如下:

好了,一个最简单的Web项目完成了。没有写任何的配置文件,也没有任何的xml文件(这里完全可以把web.xml文件删掉)。

posted @ 2019-02-20 15:10  panchanggui  阅读(152)  评论(0编辑  收藏  举报