匯入依賴：

<!-- swagger start -->

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.9.2</version>
</dependency>

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.9.2</version>
</dependency>
<!-- swagger end-->


傳建一個config類：

import com.google.common.base.Optional;
import com.google.common.collect.Lists;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.schema.DefaultGenericTypeNamingStrategy;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spi.service.contexts.ApiSelector;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.ArrayList;

@Configuration
@EnableSwagger2      //開啟Swagger2
public class SwaggerConfig {


    @Bean
    public Docket docket1(){
        return new Docket(DocumentationType.SWAGGER_2).groupName("WZJ");
    }
    @Bean
    public Docket docket2(){
        return new Docket(DocumentationType.SWAGGER_2).groupName("HHH");
    }
    @Bean
    public Docket docket3(){
        return new Docket(DocumentationType.SWAGGER_2).groupName("Hello");
    }

    //配置Swagger的Docket的Bean例項
    @Bean
    public Docket docket() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .groupName("JJ")
                //enable()：是否啟用Swagger，若是False：swagger在瀏覽器中不可訪問
                .enable(true)
                .select()
                //RequestHandlerSelectors,配置要掃描介面的方式
                //basePackage:指定要掃描的包
                //any():掃描全部
                //none():不掃描
                //withClassAnnotation()掃描類上的註解
                //withMethodAnnotation()掃描方法上的註解
                .apis(RequestHandlerSelectors.basePackage("com.jj.springshop.controller"))
                //過濾什麼路徑
                //.paths(PathSelectors.ant("/jj/**"))
                .build()
                ;

    }

    //配置Swagger資訊=apiInfo
    private ApiInfo apiInfo() {

        Contact contact = new Contact("WZJ", "https://www.cnblogs.com/WuDaShu/", "[email protected]");

        return new ApiInfo(
                "WZJ-Swagger",
                "Its nothing",
                "1.0",
                "urn:tos",
                contact,
                "Apache 2.0",
                "http://www.apache.org/licenses/LICENSE-2.0",
                new ArrayList()
        );

    }
}

啟動專案後瀏覽網址：
http://localhost:8080/swagger-ui.html