使用IDEA创建SpringBoot项目的方法步骤

2024-07-14 08:40:48

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1.打开IDEA,创建新项目，选择Spring Initializr

IDEA,创建,SpringBoot

2.输入Artifact

IDEA,创建,SpringBoot

3.勾选Web

IDEA,创建,SpringBoot

4.点击finish完成

IDEA,创建,SpringBoot

5.进入项目，可以将以下内容删除

IDEA,创建,SpringBoot

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

IDEA,创建,SpringBoot