DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler

Question

I am trying to design a rest api, and below is my controller code.

when i invoke http://localhost:8080/ the response is fine, but if i hit http://localhost:8080/api/ca it thorws javax.servlet.ServletException: No adapter for handler [...CaDetailController@48224381]: The DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler

@RestController("/api")
public class CaDetailController {

    private static final Logger logger = LoggerFactory.getLogger(GetClassLoader.class.getClass());

    @Autowired
    CaService caService;

    @RequestMapping(path = "/ca", method = RequestMethod.GET)
    public @ResponseBody List<CaDetail> getCorporateActions() {
        logger.info("CaDetailController.findAllCaDetails()");
        return caService.findAllCaDetails();
    }

    @RequestMapping(path = "/ca/{caId}", method = RequestMethod.GET)
    public @ResponseBody List<CaDetail> getCorporateActions(@PathParam("caId") long caId) {
        logger.info("CaDetailController.getCorporateActions() : caId : " + caId);
        return caService.findAllCaDetails();
    }
}

Updated controller.

@RestController
@RequestMapping("/api/ca")
public class CaDetailController {

    private static final Logger logger = LoggerFactory.getLogger(GetClassLoader.class.getClass());

    @Autowired
    CaService caService;

    @GetMapping(path = "/")
    public @ResponseBody List<CaDetail> getCorporateActions() {
        logger.info("CaDetailController.findAllCaDetails()");
        return caService.findAllCaDetails();
    }

    @GetMapping(path = "/{caId}")
    public @ResponseBody List<CaDetail> getCorporateActions(@PathParam("caId") Long caId) {
        logger.info("CaDetailController.getCorporateActions() : caId : " + caId);
        return caService.findAllCaDetails();
    }
}

Answer 1

Don't add ("/api") value to @RestController Annotation, add it to @RequestMapping

@RestController
@RequestMapping("api/")
...