Remove deprecated WebFlux APIs

See gh-33809

spring-test/src/main/java/org/springframework/mock/web/reactive/function/server/MockServerRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -127,12 +127,6 @@ public HttpMethod method() {
 		return this.method;
 	}
 
-	@Override
-	@Deprecated
-	public String methodName() {
-		return this.method.name();
-	}
-
 	@Override
 	public URI uri() {
 		return this.uri;

spring-webflux/src/main/java/org/springframework/web/reactive/function/BodyInserters.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -129,27 +129,6 @@ public static <T> BodyInserter<T, ReactiveHttpOutputMessage> fromValue(T body, P
 				writeWithMessageWriters(message, context, Mono.just(body), ResolvableType.forType(bodyType), null);
 	}
 
-	/**
-	 * Inserter to write the given object.
-	 * <p>Alternatively, consider using the {@code bodyValue(Object)} shortcuts on
-	 * {@link org.springframework.web.reactive.function.client.WebClient WebClient} and
-	 * {@link org.springframework.web.reactive.function.server.ServerResponse ServerResponse}.
-	 * @param body the body to write to the response
-	 * @param <T> the type of the body
-	 * @return the inserter to write a single object
-	 * @throws IllegalArgumentException if {@code body} is a {@link Publisher} or an
-	 * instance of a type supported by {@link ReactiveAdapterRegistry#getSharedInstance()},
-	 * for which {@link #fromPublisher(Publisher, Class)} or
-	 * {@link #fromProducer(Object, Class)} should be used.
-	 * @see #fromPublisher(Publisher, Class)
-	 * @see #fromProducer(Object, Class)
-	 * @deprecated As of Spring Framework 5.2, in favor of {@link #fromValue(Object)}
-	 */
-	@Deprecated
-	public static <T> BodyInserter<T, ReactiveHttpOutputMessage> fromObject(T body) {
-		return fromValue(body);
-	}
-
 	/**
 	 * Inserter to write the given producer of value(s) which must be a {@link Publisher}
 	 * or another producer adaptable to a {@code Publisher} via

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ClientRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -133,18 +133,6 @@ static Builder from(ClientRequest other) {
 		return new DefaultClientRequestBuilder(other);
 	}
 
-	/**
-	 * Create a builder with the given HTTP method and url.
-	 * @param method the HTTP method (GET, POST, etc)
-	 * @param url the url (as a URI instance)
-	 * @return the created builder
-	 * @deprecated in favor of {@link #create(HttpMethod, URI)}
-	 */
-	@Deprecated
-	static Builder method(HttpMethod method, URI url) {
-		return new DefaultClientRequestBuilder(method, url);
-	}
-
 	/**
 	 * Create a request builder with the given HTTP method and url.
 	 * @param method the HTTP method (GET, POST, etc)

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ClientResponse.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -211,21 +211,6 @@ default Builder mutate() {
 
 	// Static builder methods
 
-	/**
-	 * Create a builder with the status, headers, and cookies of the given response.
-	 * <p><strong>Note:</strong> Note that the body in the returned builder is
-	 * {@link Flux#empty()} by default. To carry over the one from the original
-	 * response, use {@code otherResponse.bodyToFlux(DataBuffer.class)} or
-	 * simply use the instance based {@link #mutate()} method.
-	 * @param other the response to copy the status, headers, and cookies from
-	 * @return the created builder
-	 * @deprecated as of 5.3 in favor of the instance based {@link #mutate()}.
-	 */
-	@Deprecated
-	static Builder from(ClientResponse other) {
-		return new DefaultClientResponseBuilder(other, false);
-	}
-
 	/**
 	 * Create a response builder with the given status code and using default strategies for
 	 * reading the body.

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/DefaultWebClient.java

@@ -39,7 +39,6 @@
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 import reactor.core.publisher.SignalType;
-import reactor.util.context.Context;
 
 import org.springframework.core.ParameterizedTypeReference;
 import org.springframework.http.HttpHeaders;
@@ -207,8 +206,6 @@ private class DefaultRequestBodyUriSpec implements RequestBodyUriSpec {
 
 		private final Map<String, Object> attributes = new LinkedHashMap<>(4);
 
-		private @Nullable Function<Context, Context> contextModifier;
-
 		private @Nullable Consumer<ClientHttpRequest> httpRequestConsumer;
 
 		DefaultRequestBodyUriSpec(HttpMethod httpMethod) {
@@ -335,14 +332,6 @@ public RequestBodySpec attributes(Consumer<Map<String, Object>> attributesConsum
 			return this;
 		}
 
-		@SuppressWarnings("deprecation")
-		@Override
-		public RequestBodySpec context(Function<Context, Context> contextModifier) {
-			this.contextModifier = (this.contextModifier != null ?
-					this.contextModifier.andThen(contextModifier) : contextModifier);
-			return this;
-		}
-
 		@Override
 		public RequestBodySpec httpRequest(Consumer<ClientHttpRequest> requestConsumer) {
 			this.httpRequestConsumer = (this.httpRequestConsumer != null ?
@@ -393,12 +382,6 @@ public RequestHeadersSpec<?> body(BodyInserter<?, ? super ClientHttpRequest> ins
 			return this;
 		}
 
-		@Override
-		@Deprecated
-		public RequestHeadersSpec<?> syncBody(Object body) {
-			return bodyValue(body);
-		}
-
 		@Override
 		public ResponseSpec retrieve() {
 			return new DefaultResponseSpec(
@@ -434,9 +417,7 @@ public <V> Flux<V> exchangeToFlux(Function<ClientResponse, ? extends Flux<V>> re
 			});
 		}
 
-		@SuppressWarnings("deprecation")
-		@Override
-		public Mono<ClientResponse> exchange() {
+		private Mono<ClientResponse> exchange() {
 			ClientRequest.Builder requestBuilder = initRequestBuilder();
 			ClientRequestObservationContext observationContext = new ClientRequestObservationContext(requestBuilder);
 			return Mono.deferContextual(contextView -> {
@@ -459,9 +440,6 @@ public Mono<ClientResponse> exchange() {
 								WebClientUtils.getRequestDescription(request.method(), request.url()) +
 								" [DefaultWebClient]")
 						.switchIfEmpty(NO_HTTP_CLIENT_RESPONSE_ERROR);
-				if (this.contextModifier != null) {
-					responseMono = responseMono.contextWrite(this.contextModifier);
-				}
 				final AtomicBoolean responseReceived = new AtomicBoolean();
 				return responseMono
 						.doOnNext(response -> responseReceived.set(true))

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/DefaultWebClientBuilder.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -251,16 +251,6 @@ public WebClient.Builder exchangeStrategies(ExchangeStrategies strategies) {
 		return this;
 	}
 
-	@Override
-	@Deprecated
-	public WebClient.Builder exchangeStrategies(Consumer<ExchangeStrategies.Builder> configurer) {
-		if (this.strategiesConfigurers == null) {
-			this.strategiesConfigurers = new ArrayList<>(4);
-		}
-		this.strategiesConfigurers.add(configurer);
-		return this;
-	}
-
 	@Override
 	public WebClient.Builder exchangeFunction(ExchangeFunction exchangeFunction) {
 		this.exchangeFunction = exchangeFunction;

spring-webflux/src/main/java/org/springframework/web/reactive/function/client/ExchangeFilterFunctions.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * Copyright 2002-2025 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.
@@ -17,12 +17,9 @@
 package org.springframework.web.reactive.function.client;
 
 import java.nio.charset.Charset;
-import java.util.Map;
-import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.function.Predicate;
 
-import org.jspecify.annotations.Nullable;
 import reactor.core.publisher.Mono;
 
 import org.springframework.core.io.buffer.DataBufferUtils;
@@ -41,13 +38,6 @@
  */
 public abstract class ExchangeFilterFunctions {
 
-	/**
-	 * Name of the request attribute with {@link Credentials} for {@link #basicAuthentication()}.
-	 */
-	private static final String BASIC_AUTHENTICATION_CREDENTIALS_ATTRIBUTE =
-			ExchangeFilterFunctions.class.getName() + ".basicAuthenticationCredentials";
-
-
 	/**
 	 * Consume up to the specified number of bytes from the response body and
 	 * cancel if any more data arrives.
@@ -100,81 +90,4 @@ public static ExchangeFilterFunction basicAuthentication(String username, String
 						.build());
 	}
 
-	/**
-	 * Variant of {@link #basicAuthentication(String, String)} that looks up
-	 * the {@link Credentials Credentials} in a
-	 * {@link #BASIC_AUTHENTICATION_CREDENTIALS_ATTRIBUTE request attribute}.
-	 * @return the filter to use
-	 * @see Credentials
-	 * @deprecated as of Spring 5.1 in favor of using
-	 * {@link HttpHeaders#setBasicAuth(String, String)} while building the request.
-	 */
-	@Deprecated
-	public static ExchangeFilterFunction basicAuthentication() {
-		return (request, next) -> {
-			Object attr = request.attributes().get(BASIC_AUTHENTICATION_CREDENTIALS_ATTRIBUTE);
-			if (attr instanceof Credentials cred) {
-				return next.exchange(ClientRequest.from(request)
-						.headers(headers -> headers.setBasicAuth(cred.username, cred.password))
-						.build());
-			}
-			else {
-				return next.exchange(request);
-			}
-		};
-	}
-
-
-	/**
-	 * Stores username and password for HTTP basic authentication.
-	 * @deprecated as of Spring 5.1 in favor of using
-	 * {@link HttpHeaders#setBasicAuth(String, String)} while building the request.
-	 */
-	@Deprecated
-	public static final class Credentials {
-
-		private final String username;
-
-		private final String password;
-
-		/**
-		 * Create a new {@code Credentials} instance with the given username and password.
-		 * @param username the username
-		 * @param password the password
-		 */
-		public Credentials(String username, String password) {
-			Assert.notNull(username, "'username' must not be null");
-			Assert.notNull(password, "'password' must not be null");
-			this.username = username;
-			this.password = password;
-		}
-
-		/**
-		 * Return a {@literal Consumer} that stores the given username and password
-		 * as a request attribute of type {@code Credentials} that is in turn
-		 * used by {@link ExchangeFilterFunctions#basicAuthentication()}.
-		 * @param username the username
-		 * @param password the password
-		 * @return a consumer that can be passed into
-		 * {@linkplain ClientRequest.Builder#attributes(java.util.function.Consumer)}
-		 * @see ClientRequest.Builder#attributes(java.util.function.Consumer)
-		 * @see #BASIC_AUTHENTICATION_CREDENTIALS_ATTRIBUTE
-		 */
-		public static Consumer<Map<String, Object>> basicAuthenticationCredentials(String username, String password) {
-			Credentials credentials = new Credentials(username, password);
-			return (map -> map.put(BASIC_AUTHENTICATION_CREDENTIALS_ATTRIBUTE, credentials));
-		}
-
-		@Override
-		public boolean equals(@Nullable Object other) {
-			return (this == other ||(other instanceof Credentials that &&
-					this.username.equals(that.username) && this.password.equals(that.password)));
-		}
-
-		@Override
-		public int hashCode() {
-			return this.username.hashCode() * 31 + this.password.hashCode();
-		}
-	}
-
 }