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
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
9、测试:
在地址栏中输入http://localhost:8080/hello
9.使用启动jar包的方式启动
(1)首先进入项目所在目录,如果是mac系统在项目上右键,选择Reveal in Finder,Windows系统在项目上右键选择Show in Explorer,即可打开项目所在目录
(2)打开终端,进入项目所在目录
cd /Users/shanml/IdeaProjects/SpringbootDemo
输入mvn install,构建项目
(3)构建成功后,在项目target文件夹下会多出一个jar包
(4)使用java -jar springbootdemo-0.0.1-SNAPSHOT.jar
启动jar包即可
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