使用IDEA创建SpringBoot项目

来源：互联网发布：马航mh370真相知乎编辑：程序博客网时间：2024/05/29 18:45

参考：

慕课网廖师兄：两小时学会Springboot

http://www.imooc.com/learn/767

1.打开IDEA,创建新项目，选择Spring Initializr

2.输入Artifact

3.勾选Web

4.点击finish完成

5.进入项目，可以将以下内容删除

pom.xml文件：

<?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.example</groupId><artifactId>springbootdemo</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>springbootdemo</name><description>Demo project for Spring Boot</description><!--起步依赖--><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.2.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding><java.version>1.8</java.version></properties><dependencies><!--开发web项目相关依赖--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--springboot单元测试--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><!--maven构建--><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

6.创建一个HelloController

package com.example;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class HelloController {    @RequestMapping("/hello")    public String hello() {        return "hello,this is a springboot demo";    }}

7.程序自动生成的SpringbootdemoApplication，会有一个@SpringBootApplication的注解，这个注解用来标明这个类是程序的入口

package com.example;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;//入口@SpringBootApplicationpublic class SpringbootdemoApplication {public static void main(String[] args) {SpringApplication.run(SpringbootdemoApplication.class, args);}}

@SpringBootApplication开启了Spring的组件扫描和springboot的自动配置功能，相当于将以下三个注解组合在了一起

（1）@Configuration：表名该类使用基于Java的配置,将此类作为配置类

（2）@ComponentScan：启用注解扫描

（3）@EnableAutoConfiguration：开启springboot的自动配置功能

8.运行SpringbootdemoApplication类