Spring ResponseEntity and forward

问题

Im a SpringBoot application have a REST controller that handles several cases and one of these cases it must forward to another controller.

@PutMapping(
        value = "/rest/endpoint",
        consumes = MediaType.APPLICATION_JSON_VALUE,
        produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public ResponseEntity<CustomObject> doPut(@RequestBody myDataToBeHandled) {

   if(caseAHolds(myDataToBeHandled){
      return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
   }
   else if(caseBHolds(myDataToBeHandled){
      return new ResponseEntity<>(null, HttpStatus.OK);
   }
   else if(caseCHolds(myDataToBeHandled){
     // Redirect here
   }

}

I have seen an example on how to do this for a redirect?

回答1:

You need to set the Location header as shown below in order to redirect the request to another URL as shown below:

@PutMapping(
        value = "/rest/endpoint",
        consumes = MediaType.APPLICATION_JSON_VALUE,
        produces = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public ResponseEntity<CustomObject> doPut(@RequestBody myDataToBeHandled) {

   if(caseAHolds(myDataToBeHandled){
      return new ResponseEntity<>(null, HttpStatus.BAD_REQUEST);
   }
   else if(caseBHolds(myDataToBeHandled){
      return new ResponseEntity<>(null, HttpStatus.OK);
   }
   else if(caseCHolds(myDataToBeHandled){
     // Redirect here
     HttpHeaders headers = new HttpHeaders();
     headers.add("Location", "ADD_URL_HERE");
     return new ResponseEntity<CustomObject>(headers, HttpStatus. OK);
   }
}

来源：https://stackoverflow.com/questions/43033790/spring-responseentity-and-forward