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入门案例之离线版
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IDEA
    文件
        项目结构...
            模块
                +新建模块
                    Maven
                        名称：springboot_01_04_quickstart
                        组ID：cn.tedu

在/pom.xml文件中添加：

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.6.4</version>
</parent>

和

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

在/src/main/java/cn/tedu/springboot目录下创建Springboot0104QuickstartApplication.java文件：

@SpringBootApplication
public class Springboot0104QuickstartApplication {

    public static void main(String[] args) {
        SpringApplication.run(Springboot0104QuickstartApplication.class, args);
    }

}

在/src/main/java/cn/tedu/springboot/controller目录下创建BookController.java文件：

@RestController
@RequestMapping("/books")
public class BookController {
    @GetMapping
    public String getBooks() {
        System.out.println("Spring Boot is running ...");
        return "Spring Boot is running ...";
    }
}

Springboot0104QuickstartApplication右键
    运行

例程：springboot_01_04_quickstart