使用IDEA创建SpringBoot项目

hzc 2020-06-22 14:06 2791浏览原创

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 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></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