Remove APIs deprecated for removal in 6.2

This commit removes the following obsolete and deprecated APIs.

- org.springframework.util.Base64Utils

- org.springframework.cache.jcache.interceptor.JCacheOperationSourcePointcut

- org.springframework.http.client.AbstractClientHttpResponse

- org.springframework.http.client.ClientHttpResponse.getRawStatusCode()

- org.springframework.http.client.observation.ClientHttpObservationDocumentation.HighCardinalityKeyNames.CLIENT_NAME

- org.springframework.web.reactive.function.client.ClientHttpObservationDocumentation.HighCardinalityKeyNames.CLIENT_NAME

- org.springframework.web.filter.reactive.ServerWebExchangeContextFilter.get(Context)

- org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler.handleBindException(...)

- org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver.handleBindException(...)

Closes gh-30608

spring-web/src/main/java/org/springframework/http/client/AbstractClientHttpResponse.java

@@ -1,39 +0,0 @@
-/*
- * Copyright 2002-2023 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.http.client;
-
-import java.io.IOException;
-
-import org.springframework.http.HttpStatusCode;
-
-/**
- * Abstract base for {@link ClientHttpResponse}.
- *
- * @author Arjen Poutsma
- * @since 3.1.1
- * @deprecated as of 6.0, with no direct replacement; scheduled for removal in 6.2
- */
-@Deprecated(since = "6.0", forRemoval = true)
-public abstract class AbstractClientHttpResponse implements ClientHttpResponse {
-
-	@Override
-	@SuppressWarnings("removal")
-	public HttpStatusCode getStatusCode() throws IOException {
-		return HttpStatusCode.valueOf(getRawStatusCode());
-	}
-
-}

spring-web/src/main/java/org/springframework/http/client/ClientHttpResponse.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * 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.
@@ -42,20 +42,6 @@ public interface ClientHttpResponse extends HttpInputMessage, Closeable {
 	 */
 	HttpStatusCode getStatusCode() throws IOException;
 
-	/**
-	 * Get the HTTP status code as an integer.
-	 * @return the HTTP status as an integer value
-	 * @throws IOException in case of I/O errors
-	 * @since 3.1.1
-	 * @see #getStatusCode()
-	 * @deprecated as of 6.0, in favor of {@link #getStatusCode()}; scheduled for
-	 * removal in 6.2
-	 */
-	@Deprecated(since = "6.0", forRemoval = true)
-	default int getRawStatusCode() throws IOException {
-		return getStatusCode().value();
-	}
-
 	/**
 	 * Get the HTTP status text of the response.
 	 * @return the HTTP status text

spring-web/src/main/java/org/springframework/http/client/observation/ClientHttpObservationDocumentation.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * 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.
@@ -135,20 +135,6 @@ public enum ClientHttpObservationDocumentation implements ObservationDocumentati
 			public String asString() {
 				return "http.url";
 			}
-		},
-
-		/**
-		 * Client name derived from the request URI host.
-		 * @deprecated in favor of {@link LowCardinalityKeyNames#CLIENT_NAME};
-		 * scheduled for removal in 6.2. This will be available both as a low and
-		 * high cardinality key value.
-		 */
-		@Deprecated(since = "6.0.5", forRemoval = true)
-		CLIENT_NAME {
-			@Override
-			public String asString() {
-				return "client.name";
-			}
 		}
 
 	}

spring-web/src/main/java/org/springframework/web/filter/reactive/ServerWebExchangeContextFilter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * 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.
@@ -64,19 +64,4 @@ public class ServerWebExchangeContextFilter implements WebFilter {
 		return contextView.getOrEmpty(EXCHANGE_CONTEXT_ATTRIBUTE);
 	}
 
-	/**
-	 * Access the {@link ServerWebExchange} from a Reactor {@link Context},
-	 * if available, which is generally the case when
-	 * {@link ServerWebExchangeContextFilter} is present in the filter chain.
-	 * @param context the context to get the exchange from
-	 * @return an {@link Optional} with the exchange if found
-	 * @deprecated in favor of using {@link #getExchange(ContextView)} which
-	 * accepts a {@link ContextView} instead of {@link Context}, reflecting the
-	 * fact that the {@code ContextView} is needed only for reading.
-	 */
-	@Deprecated(since = "6.0.6", forRemoval = true)
-	public static Optional<ServerWebExchange> get(Context context) {
-		return context.getOrEmpty(EXCHANGE_CONTEXT_ATTRIBUTE);
-	}
-
 }