使用IDEA创建SpringBoot项目的方法步骤

所属分类：软件编程 / java 阅读数： 17

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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; 
@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