springboot极简入门demo

一.创建springboot模块

 

二.工程搭建

1.pom文件 引入最小依赖

<?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"> <parent> <artifactId>springboot-demo</artifactId> <groupId>com.et</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <groupId>com.et59.demo</groupId> <artifactId>demo</artifactId> <properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-autoconfigure</artifactId> </dependency> </dependencies> </project>

2.编写返回HelloWorld的Controller

package com.et.demo.controller; import java.util.HashMap; import java.util.Map; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller public class HelloWorldController { @RequestMapping("/hello") @ResponseBody public Map<String, Object> showHelloWorld(){ Map<String, Object> map = new HashMap<>(); map.put("msg", "HelloWorld"); return map; } }

3.配置文件

application.yaml

server: port: 8088 

4.应用启动类

package com.et.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } }

三.验证服务是否正常

3.1启动服务

3.2打开浏览器验证

输入url http://127.0.0.1:8088/hello response:

{"msg":"HelloWorld"}

总结

这就是SpringBoot的helloworld的入门程序，是不是特别简单，相比以前的开发少了很多的配置，只需要在pom.xml中添加一个web的启动器即可完成所有配置