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可以使用Maven方式和Spring Initializer 方式创建项目
环境支持:Maven 3.6.2 + JDK1.8 + IDEAJ
一、使用Maven 方式构建SpringBoot项目
1、初始化Maven设置
打开IDEA欢迎页,右下角【Configure】--->【Settings】--->左侧搜索Maven,配置Maven信息
2、JDK初始化设置
打开IDEA欢迎页,右下角【Configure】--->【Structure for New Project】--->左侧选择【Project Settings】--->【Project】,设置JDK版本为1.8
3、在IDEA欢迎页,【Create New Project】创建项目,选择Maven方式创建项目
点击Next后,输入项目信息和Maven信息后点击Finish
4、打开pom.xml添加SpringBoot的相关依赖,并选择自动导入依赖【Enable Auto-Import】
<?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.chen</groupId>
<artifactId>SpringBoot_demo01</artifactId>
<version>1.0-SNAPSHOT</version>
<!--引入SpringBoot父依赖-->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
</parent>
<dependencies>
<!--引入web场景依赖启动器-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
</project>
5、编写SpringBoot的启动类
在SpringBoot_demo01下的src-main-java下新建一个包com.chen,在该包下新建启动类
Demo01Applicationimport org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication//标明当前类为SpringBoot启动类
public class Demo01Application {
public static void main(String[] args) {
SpringApplication.run(Demo01Application.class,args);
}
}
6、在com.chen下新建一个controller包,在该包下创建一个HelloController用于测试
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController//@RequestMapping+@ResponseBody
public class HelloController {
@RequestMapping("/hello")
public String hello(){
return "hello Spring Boot" ;
}
}
7、运行启动类Demo01Application
在浏览器访问http://localhost:8080/hello
二、使用Spring Initializr 方式构建SpringBoot项目
1、新建项目时选择Spring Initializr ,点击Next
2、填写Maven信息,然后点击Next
3、选择依赖场景,然后点击Next
4、填写项目信息,然后点击Finish
5、生成的项目结构
生成的pom.xml如下
<?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
https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.0</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.chen</groupId>
<artifactId>demo02</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo02</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
可以看到,通过Spring Initializr生成的SpringBoot项目包含了SpringBoot启动类和SpringBoot的web场景下所需要的依赖启动器 spring-boot-starter-parent和spring-boot-starter-web 此外还配置了单元测试的启动器spring-boot-starter-test和maven打包插件
6、在com.chen.demo02下新建一个controller包,在该包下新建一个HelloController
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@RequestMapping("/hi")
public String sayHello(){
return "SpringInitlizer 启动成功";
}
}
7、运行启动类Demo02Application在浏览器输入http://localhost:8080/hi