1添加maven依赖

<dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger2</artifactId>
         <version>2.7.0</version>
      </dependency>
      <dependency>
         <groupId>io.springfox</groupId>
         <artifactId>springfox-swagger-ui</artifactId>
         <version>2.7.0</version>
      </dependency>

2启动类添加启动注解

3编写配置类

@Configuration
@EnableSwagger2  
public class SwaggerConfig {
    @Bean  
      public Docket userApi() {  
          Predicate<RequestHandler> swaggerSelector = RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class);  
          return new Docket(DocumentationType.SWAGGER_2)  
                  .securitySchemes(newArrayList(new ApiKey[]{this.apiKey()}))  
//                .securitySchemes(newArrayList(new BasicAuth("test"))) //账号密码登录  
//                .enable(false)   //禁止使用  
                  .apiInfo(apiInfo())  
                  .select()  
//                .apis(RequestHandlerSelectors.basePackage("com.boot"))  
                  .apis(swaggerSelector)  
                  .paths(PathSelectors.any())  
                  .build();  
      }  
     
       private ApiInfo apiInfo(){  
           return new ApiInfoBuilder() 
                 .title("My Swagger")
                 /*  .description("构建restful api,learn more:springfox.io")  //副标题
                   .license("Licens")  
                   .licenseUrl("http://www.apache.org/licenses/LICENSE-2.0.html")  
                   .contact(new Contact("boot","官网地址url","email地址"))  
                   .version("0.0.1")  */
                   .build();  
       }  

       ApiKey apiKey() {
           return new ApiKey("sessionId", "sessionId", "header");  
       }  
}

4启动项目打开浏览器输入 http://localhost:端口/swagger-ui.html