Replace Promises.error->Streams.fail, concatMap->map

spring-web-reactive/src/main/java/org/springframework/reactive/web/DispatcherHttpHandler.java

@@ -21,7 +21,6 @@ import java.util.List;
 import org.reactivestreams.Publisher;
 import reactor.core.reactivestreams.PublisherFactory;
 import reactor.core.reactivestreams.SubscriberWithContext;
-import reactor.rx.Promises;
 import reactor.rx.Streams;
 
 import org.springframework.beans.factory.BeanFactoryUtils;
@@ -72,8 +71,8 @@ public class DispatcherHttpHandler implements HttpHandler {
 					return resultHandler.handleResult(request, response, result);
 				}
 			}
-			String error = "No HandlerResultHandler for " + result.getReturnValue();
-			return Promises.error(new IllegalStateException(error));
+			return Streams.fail(new IllegalStateException(
+					"No HandlerResultHandler for " + result.getReturnValue()));
 		});
 	}
 

spring-web-reactive/src/test/java/org/springframework/reactive/web/DispatcherApp.java

@@ -22,7 +22,6 @@ import java.util.Map;
 import io.netty.buffer.ByteBuf;
 import io.reactivex.netty.protocol.http.server.HttpServer;
 import org.reactivestreams.Publisher;
-import reactor.rx.Stream;
 import reactor.rx.Streams;
 
 import org.springframework.http.MediaType;
@@ -93,9 +92,8 @@ public class DispatcherApp {
 
 		@Override
 		public Publisher<HandlerResult> handle(ServerHttpRequest request, ServerHttpResponse response, Object handler) {
-			Publisher<String> resultPublisher = ((PlainTextHandler) handler).handle(request, response);
-			Stream<String> stream = Streams.wrap(resultPublisher);
-			return stream.concatMap((returnValue) -> Streams.just(new HandlerResult(returnValue)));
+			Publisher<String> publisher = ((PlainTextHandler) handler).handle(request, response);
+			return Streams.wrap(publisher).map(HandlerResult::new);
 		}
 	}