Spring boot: how to set a common path for multiple RestControllers

Question

I am using spring boot to write an api and I would like to map all my resources behind a common base path (/api in this case). However I don't want to annotate each RestController class to do this (by annotating it with @RequestMapping for example). I have thought about the following solutions but they all have a down side that i would rather not want:

• Creating a base class (eg ApiRestController) and having all the other RestController inherit this one. This has as disadvantage that @Requestmapping on the class level isn't merged between the base and implementing classes.
• Annotating all the RestController but this leads to code duplication
• Changing the server.context-path property. This has as disadvantage that all endpoints will use this base path. Even the endpoints exposed by the actuator project.
• Using a custom DispatcherServlet and ServletRegistrationBean. But this seems to have the same effect as changing the server.context-path.

So does anyone know how to do this without the disadvantages the solutions have that i summed. The project will only expose a REST-based backend and will not server any static content (don't know if this influences the possible solutions). The Restcontrollers are also divided over multiple packages.

Thanks.

Answer 1

You can try using @path annotation to consider multiple URI as single URI.

@Path("sampleresource/{Filepath:.*}")
public interface SampleResource {
    @GET
    @Produces({ MediaType.TEXT_PLAIN })
    @Path("/hello")
    public Response sayHello();
}

Answer 2

See my answer to a similar question. How to configure a default @RestController URI prefix for all controllers? You can create a custom annotation and just perform mappings based on it.

Answer 3

You can try to create your custom annotation which would include @RestController and @RequestMapping:

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@RestConntroller
@RequestMapping(value = "/api" )
@interface MyController {

}

Answer 4

Why don't you put @RequestMapping("/api") on all RestControllers?

@RestController
@RequestMapping("/api")
public class UserApi {
    @RequestMapping("/user")
    public String user() {
        ...
    }
}