code: package it.unibz.inf.ontop.endpoint.controllers;
  
  import it.unibz.inf.ontop.endpoint.beans.PortalConfigComponent;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.http.HttpHeaders;
  import org.springframework.http.HttpStatus;
  import org.springframework.http.ResponseEntity;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.ResponseBody;
  import org.springframework.web.bind.annotation.RestController;
  
  import static org.springframework.http.HttpHeaders.CONTENT_TYPE;
  
  @RestController
  public class PortalConfigController {
  
      private final String jsonString;
  
      @Autowired
      public PortalConfigController(PortalConfigComponent.PortalConfigSerialization portalConfigSerialization) {
          this.jsonString = portalConfigSerialization.jsonString;
      }
  
      @RequestMapping(value = "/ontop/portalConfig")
      @ResponseBody
      public ResponseEntity<String> reformulate() {
          HttpHeaders headers = new HttpHeaders();
          headers.set(CONTENT_TYPE, "application/json; charset=UTF-8");
          return new ResponseEntity<>(jsonString, headers, HttpStatus.OK);
      }
  
  }
  