CODEWITHSUNDEEP
javaplayframework
John
John

Reputation: 1601

How to handle a different types of exception in a one place?

I'm using play 2.8.x framework and I have the following controller:

public class HomeController extends Controller {
    public Result show(Http.Request request) throws MyException {
        ...
        return ok("some_data");
    }
}

and I want to do something like in a Spring framework for handling exceptions:

// It is from the Spring web framework
@ExceptionHandler(MyException.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
public ExplainExceptionDTO handleMyException() {
    ...
    return explain;
}

Can I do something like this in the play 2.8.x framework?

Upvotes: 1

Views: 52

Answers (1)

VM4
VM4

Reputation: 6501

This explains it pretty well: https://www.playframework.com/documentation/2.8.x/JavaErrorHandling

@Singleton
public class ErrorHandler implements HttpErrorHandler {
  public CompletionStage<Result> onClientError(
      RequestHeader request, int statusCode, String message) {
    return CompletableFuture.completedFuture(
        Results.status(statusCode, "A client error occurred: " + message));
  }

  public CompletionStage<Result> onServerError(RequestHeader request, Throwable exception) {
    return CompletableFuture.completedFuture(
        Results.internalServerError("A server error occurred: " + exception.getMessage()));
  }
}

The method you are interested in is onServerError. So instead of returning the default internalServerError check the Throwable type, if it's your exception return badRequest(), you can even provide the template if you want.

Upvotes: 1

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