引入包

plugins {
    id 'java'
}

group 'org.example'
version '1.0-SNAPSHOT'

allprojects {
    repositories {
        maven {
            url 'https://maven.aliyun.com/repository/public/'
        }
        mavenLocal()
        mavenCentral()
    }
}

dependencies {
    implementation group: 'org.springframework.boot', name: 'spring-boot-starter-web', version: '2.5.1'
    implementation group: 'io.springfox', name: 'springfox-boot-starter', version: '3.0.0'
}

test {
    useJUnitPlatform()
}

启动类

package com.sunfa8.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class DemoApplication {

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

配置

package com.sunfa8.demo;

import org.springframework.context.annotation.Configuration;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Configuration
@EnableSwagger2
public class SwaggerConfig {
}