1. 继承 Spring Boot 我的项目

<parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>2.7.2</version>    <relativePath/></parent>

2. 引入 Spring MVC 依赖

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

3. 编写 Controller 代码

@RestControllerpublic class HelloWorldController {    @GetMapping("/hello")    public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {        return String.format("Hello %s!", name);    }}

4. 编写启动类

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

5. 运行启动类

运行启动类,在浏览器中输出:http://localhost:8080/hello?name=小穆 ,即可看到如下成果: