使用IDEA创建SpringBoot项目

互联网 20-6-22

使用IDEA创建SpringBoot项目

1.打开IDEA,创建新项目，选择Spring Initializr

2.输入Artifact

3.勾选Web

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;  @RestController public 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 @SpringBootApplication public 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