Swagger integration support for servlet in springboot project

[Rijuta]

Hi, 

We have a Java-Servlet project that we recently migrated to Springboot. However, some of the endpoints are still Servlet endpoints. 

I am trying to add Swagger documentation but the swagger doesn't detect the Servlets as endpoint. I tired a few online solutions, no success yet. 

Is it possible to document Servlet with Swagger? Any example to refer? Thank you. 

Below are current implementation details  - 

Servlet class look like: 

public class StatusServlet extends HttpServlet {

   

    /**

     * Initialize the servlet.

     */

    public void init() {

        String myName = getServletName();

        ApplicationController.setProperty(

            Constants.STATUS_SERVLET_NAME, myName);

    }

    /**

     * doGet method.

     * @param request the request object

     * @param response the response object

     * @throws ServletException if a ServletException is generated

     * @throws IOException if an IOException is generated

     */

    

    public void doGet(HttpServletRequest request, HttpServletResponse response)

        throws ServletException, IOException {

       //Implementation goes here

    }

}

Swagger config: 

@Configuration

@EnableSwagger2

public class SwaggerConfig {           

    @Bean

    public Docket api() { 

        return new Docket(DocumentationType.SWAGGER_2)

          .select()                                 

         .apis(RequestHandlerSelectors.basePackage("<package name>"))

          .paths(PathSelectors.any()).paths(paths())

          .build().apiInfo(apiInfo());                                           

    }

    

 // Describe your apis

  private ApiInfo apiInfo() {

  //String appName = appProperties.getApplcationName();

  String appName = "xyz";

  return new ApiInfoBuilder().title(appName + " APIs")

  .description("This page lists all the APIs for the " + appName)

  //.version(appProperties.getVersion())

  .license("Apache 2.0")

  .licenseUrl("http://www.apache.org/licenses/LICENSE-2.0.html")

  .build();

  }

  // Only select apis that matches the given Predicates.

  private Predicate<String> paths() {

 

  // Match all paths except /error

  return Predicates.and(PathSelectors.regex("/.*"), Predicates.not(PathSelectors.regex("/error.*")));

  }

  @Bean

  UiConfiguration uiConfig() {

  return UiConfigurationBuilder.builder()

  .deepLinking(true)

  .displayOperationId(false)

  .defaultModelsExpandDepth(1)

  .defaultModelExpandDepth(1)

  .defaultModelRendering(ModelRendering.EXAMPLE)

  .displayRequestDuration(false)

  .docExpansion(DocExpansion.NONE)

  .filter(false)

  .maxDisplayedTags(null)

  .operationsSorter(OperationsSorter.ALPHA)

  .showExtensions(false)

  .tagsSorter(TagsSorter.ALPHA)

  .validatorUrl(null)

  .build();

  }

}

Gradle dependency: 

//Springfox for Swagger Support

//compile('io.springfox:springfox-swagger2:2.8.0')

//compile('io.springfox:springfox-swagger-ui:2.8.0')