Swagger not generating the REST documentation

Question

I'm trying to let Swagger autogenerate che documentation of my REST APIs but I only get a partial result.

I'm using Resteasy. I added the Maven Swagger dependency

<dependency>
    <groupId>io.swagger</groupId>
    <artifactId>swagger-jaxrs</artifactId>
    <version>1.5.3</version>
</dependency>

Then I configured my Application object

package com.myapp.init;


import java.util.HashSet;
import java.util.Set;

import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

import io.swagger.jaxrs.config.BeanConfig;
import io.swagger.jaxrs.listing.ApiListingResource;
import io.swagger.jaxrs.listing.SwaggerSerializers;


@ApplicationPath("/rest")
public class WebappInit extends Application {

    public WebappInit() {
        BeanConfig beanConfig = new BeanConfig();
        beanConfig.setVersion("1.0.0");
        beanConfig.setSchemes(new String[]{"http"});
        beanConfig.setHost("theIP:8080");
        beanConfig.setBasePath("/myapp/rest/");
        beanConfig.setResourcePackage("the.resource.package");
        beanConfig.setScan(true);
        beanConfig.setPrettyPrint(true);

    }


    public Set<Class<?>> getClasses() {
        Set<Class<?>> s = new HashSet<Class<?>>();


        // here I add my REST WSs
        s.add(ApiListingResource.class);
        s.add(SwaggerSerializers.class);


        return s;
    }

}

Then I run the web application (on a Wildfly 9 server) and go to the URL http://localhost:8080/myapp/rest/swagger.json. That's what I get

{
  swagger: "2.0",
  info: {
    version: "1.0.0"
  },
  host: "10.17.36.215:8080",
  basePath: "/devops/rest/",
  schemes: [
    "http"
  ]
}

It seems that Swagger cannot build the REST documentation, even though my REST endpoints are reachable and are added to the Swagger list of resources.

What can be the problem?

Thank you

Giulio

Update: I checked that in the Swagger init method BeanConfig.classes() my REST classes are correctly discovered.

Answer 1

You need to add an @Api annotation to your resource classes.

For example:

package my.sample;
import io.swagger.annotations.Api;
import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.ws.rs.core.Response;

@Api
@Path ("/mypath")
public class MyResource
{
    @GET
    public Response myEndpoint()
    {
        return Response.ok ();
    }
}