Swagger 2 with Spring REST API - whitelabel error page - rest

Question

I am working on a simple HelloWorld Spring Boot application and I am trying to configure Swagger to automatically generate my REST service documentation.
I am following this tutorial: http://www.baeldung.com/swagger-2-documentation-for-spring-rest-api
But I am facing some difficulties.
I've added the following Swagger dependencies to the maven pom.xml file:
<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>
and also the Java configuration class SwaggerConfig as follows:
#Configuration
#EnableSwagger2
public class SwaggerConfig {
#Bean
public Docket api() {
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.any())
.paths(PathSelectors.any())
.build();
}
}
According to the guide, this should be sufficient to view the generated documentation on http://localhost:8080/v2/api-docs
However, I am getting "Whitespace Error Page: This application has no explicit mapping for /error, so you are seeing this as a fallback."
I am getting the same error for the Swagger UI page at http://localhost:8080/greeting/api/swagger-ui.html too.
For extra information, my HelloWorld code is as follows:
package hello;
public class Greeting {
private final long id;
private final String content;
public Greeting(long id, String content) {
this.id = id;
this.content = content;
}
public long getId() {
return id;
}
public String getContent() {
return content;
}
}
and the greeting controller is
package hello;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.util.concurrent.atomic.AtomicLong;
#RestController
public class GreetingController {
private static final String template = "Hello, %s!";
private final AtomicLong counter = new AtomicLong();
#RequestMapping("/greeting")
public Greeting greeting(#RequestParam(value="name", defaultValue="World") String name) {
return new Greeting(counter.incrementAndGet(),
String.format(template, name));
}
}
Everything is under main/java
I would really appreciate it if anyone has any ideas/suggestions on how to fix this! Thank you in advance :)