Add noop implementation for ResponseErrorHandler

Closes gh-32750

Author: snicoll

spring-web/src/main/java/org/springframework/web/client/NoOpResponseErrorHandler.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2002-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.web.client;
+
+import java.io.IOException;
+
+import org.springframework.http.client.ClientHttpResponse;
+
+/**
+ * A basic, no operation {@link ResponseErrorHandler} implementation suitable
+ * for ignoring any error.
+ *
+ * @author Stephane Nicoll
+ * @since 6.1.7
+ */
+public final class NoOpResponseErrorHandler implements ResponseErrorHandler {
+
+	@Override
+	public boolean hasError(ClientHttpResponse response) throws IOException {
+		return false;
+	}
+
+	@Override
+	public void handleError(ClientHttpResponse response) throws IOException {
+
+	}
+
+}

spring-web/src/test/java/org/springframework/http/server/reactive/ErrorHandlerIntegrationTests.java

@@ -22,7 +22,7 @@
 
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.web.client.NoOpResponseErrorHandler;
 import org.springframework.web.client.ResponseErrorHandler;
 import org.springframework.web.client.RestTemplate;
 import org.springframework.web.testfixture.http.server.reactive.bootstrap.AbstractHttpHandlerIntegrationTests;
@@ -36,6 +36,8 @@
  */
 class ErrorHandlerIntegrationTests extends AbstractHttpHandlerIntegrationTests {
 
+	private static final ResponseErrorHandler NO_OP_ERROR_HANDLER = new NoOpResponseErrorHandler();
+
 	private final ErrorHandler handler = new ErrorHandler();
 
 
@@ -110,17 +112,4 @@ else if (path.endsWith("handling-error")) {
 		}
 	}
 
-
-	private static final ResponseErrorHandler NO_OP_ERROR_HANDLER = new ResponseErrorHandler() {
-
-		@Override
-		public boolean hasError(ClientHttpResponse response) {
-			return false;
-		}
-
-		@Override
-		public void handleError(ClientHttpResponse response) {
-		}
-	};
-
 }