In a spring boot prj, I am using JSONObject to accept the incomming JSON payload from the client, but the value in userCredentials is null. How to fix this??
The incoming payload is valid JSON. I checked it.
import org.json.JSONObject;
...
...
@RequestMapping(value="/helloeverybody", method=RequestMethod.POST, consumes="application/json", produces="text/plain")
public ResponseEntity<String> post(@RequestBody JSONObject userCredentials,
HttpServletRequest hsr)
I tried the same and got the requestBody. The only change was of the package. I used org.json.simple.JSONObject:
import org.json.simple.JSONObject;
...
...
@RequestMapping(value="/helloeverybody", method=RequestMethod.POST, consumes="application/json", produces="text/plain")
public ResponseEntity<String> post(@RequestBody JSONObject userCredentials,
HttpServletRequest hsr)
I do believe that using a Map will solve your problem. Here's an example:
@RestController
public static class GenericController {
static final Logger logger = LoggerFactory.getLogger(GenericController.class);
@PostMapping("/generic")
public ResponseEntity<Void> post(@RequestBody Map<String, Object> payload) {
payload.forEach((key, value) -> logger.info("{}={}", key, value));
return ResponseEntity.ok().build();
}
}
I have used curl to test it.
curl -i localhost:8080/generic -d '{"key":"value"}' -H "Content-Type: application/json"
The response in the console should be something like:
2020-11-27 19:56:57.455 INFO 67478 --- [nio-8080-exec-2] BodyMappingApplication$GenericController : key=value
JSONObject, you better create your own object containing the payload you're expecting.JSONObjectand then deal with hashmap conversion.Mapthen, something like this will do@RequestBody Map<String, Object> payload