新建Spring Boot项目

使用IDEA集成Spring Initializr

新建项目

项目配置

引入依赖

创建测试接口

@RestController
public class ParaController {
    @GetMapping({"/firstRequest", "/"})
    public Map firstRequest() {
        Map<String, Object> result = new HashMap<>();
        result.put("code", 0);
        result.put("msg", "第一个接口");
        return result;
    }
}

官网 Spring Initializr 创建项目

https://start.spring.io/#!type=maven-project&language=java&platformVersion=2.3.10.RELEASE&packaging=jar&jvmVersion=1.8&groupId=top.xiongmingcai&artifactId=spring-boot-learn&name=spring-boot-learn&description=Demo%20project%20for%20Spring%20Boot&packageName=top.xiongmingcai.spring-boot-learn&dependencies=web,web

IDEA创建springboot项目总是创建失败问题的解决

https://start.aliyun.com