Remove deprecated MediaType entries

See gh-33809

spring-web/src/main/java/org/springframework/http/MediaType.java

@@ -18,7 +18,6 @@ package org.springframework.http;
 
 import java.io.Serializable;
 import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -120,32 +119,9 @@ public class MediaType extends MimeType implements Serializable {
 
 	/**
 	 * A String equivalent of {@link MediaType#APPLICATION_JSON}.
-	 * @see #APPLICATION_JSON_UTF8_VALUE
 	 */
 	public static final String APPLICATION_JSON_VALUE = "application/json";
 
-	/**
-	 * Media type for {@code application/json;charset=UTF-8}.
-	 * @deprecated as of 5.2 in favor of {@link #APPLICATION_JSON}
-	 * since major browsers like Chrome
-	 * <a href="https://bugs.chromium.org/p/chromium/issues/detail?id=438464">
-	 * now comply with the specification</a> and interpret correctly UTF-8 special
-	 * characters without requiring a {@code charset=UTF-8} parameter.
-	 */
-	@Deprecated
-	public static final MediaType APPLICATION_JSON_UTF8;
-
-	/**
-	 * A String equivalent of {@link MediaType#APPLICATION_JSON_UTF8}.
-	 * @deprecated as of 5.2 in favor of {@link #APPLICATION_JSON_VALUE}
-	 * since major browsers like Chrome
-	 * <a href="https://bugs.chromium.org/p/chromium/issues/detail?id=438464">
-	 * now comply with the specification</a> and interpret correctly UTF-8 special
-	 * characters without requiring a {@code charset=UTF-8} parameter.
-	 */
-	@Deprecated
-	public static final String APPLICATION_JSON_UTF8_VALUE = "application/json;charset=UTF-8";
-
 	/**
 	 * Media type for {@code application/octet-stream}.
 	 */
@@ -182,32 +158,6 @@ public class MediaType extends MimeType implements Serializable {
 	 */
 	public static final String APPLICATION_PROBLEM_JSON_VALUE = "application/problem+json";
 
-	/**
-	 * Media type for {@code application/problem+json}.
-	 * @since 5.0
-	 * @see <a href="https://www.iana.org/assignments/media-types/application/problem+json">
-	 *     Problem Details for HTTP APIs, 6.1. application/problem+json</a>
-	 * @deprecated as of 5.2 in favor of {@link #APPLICATION_PROBLEM_JSON}
-	 * since major browsers like Chrome
-	 * <a href="https://bugs.chromium.org/p/chromium/issues/detail?id=438464">
-	 * now comply with the specification</a> and interpret correctly UTF-8 special
-	 * characters without requiring a {@code charset=UTF-8} parameter.
-	 */
-	@Deprecated
-	public static final MediaType APPLICATION_PROBLEM_JSON_UTF8;
-
-	/**
-	 * A String equivalent of {@link MediaType#APPLICATION_PROBLEM_JSON_UTF8}.
-	 * @since 5.0
-	 * @deprecated as of 5.2 in favor of {@link #APPLICATION_PROBLEM_JSON_VALUE}
-	 * since major browsers like Chrome
-	 * <a href="https://bugs.chromium.org/p/chromium/issues/detail?id=438464">
-	 * now comply with the specification</a> and interpret correctly UTF-8 special
-	 * characters without requiring a {@code charset=UTF-8} parameter.
-	 */
-	@Deprecated
-	public static final String APPLICATION_PROBLEM_JSON_UTF8_VALUE = "application/problem+json;charset=UTF-8";
-
 	/**
 	 * Media type for {@code application/problem+xml}.
 	 * @since 5.0
@@ -258,26 +208,6 @@ public class MediaType extends MimeType implements Serializable {
 	 */
 	public static final String APPLICATION_NDJSON_VALUE = "application/x-ndjson";
 
-	/**
-	 * Media type for {@code application/stream+json}.
-	 * @since 5.0
-	 * @deprecated as of 5.3, see notice on {@link #APPLICATION_STREAM_JSON_VALUE}.
-	 */
-	@Deprecated
-	public static final MediaType APPLICATION_STREAM_JSON;
-
-	/**
-	 * A String equivalent of {@link MediaType#APPLICATION_STREAM_JSON}.
-	 * @since 5.0
-	 * @deprecated as of 5.3 since it originates from the W3C Activity Streams
-	 * specification which has a more specific purpose and has been since
-	 * replaced with a different mime type. Use {@link #APPLICATION_NDJSON} as
-	 * a replacement or any other line-delimited JSON format (for example, JSON Lines,
-	 * JSON Text Sequences).
-	 */
-	@Deprecated
-	public static final String APPLICATION_STREAM_JSON_VALUE = "application/stream+json";
-
 	/**
 	 * Media type for {@code application/xhtml+xml}.
 	 */
@@ -440,16 +370,13 @@ public class MediaType extends MimeType implements Serializable {
 		APPLICATION_FORM_URLENCODED = new MediaType("application", "x-www-form-urlencoded");
 		APPLICATION_GRAPHQL_RESPONSE = new MediaType("application", "graphql-response+json");
 		APPLICATION_JSON = new MediaType("application", "json");
-		APPLICATION_JSON_UTF8 = new MediaType("application", "json", StandardCharsets.UTF_8);
 		APPLICATION_NDJSON = new MediaType("application", "x-ndjson");
 		APPLICATION_OCTET_STREAM = new MediaType("application", "octet-stream");
 		APPLICATION_PDF = new MediaType("application", "pdf");
 		APPLICATION_PROBLEM_JSON = new MediaType("application", "problem+json");
-		APPLICATION_PROBLEM_JSON_UTF8 = new MediaType("application", "problem+json", StandardCharsets.UTF_8);
 		APPLICATION_PROBLEM_XML = new MediaType("application", "problem+xml");
 		APPLICATION_PROTOBUF = new MediaType("application", "x-protobuf");
 		APPLICATION_RSS_XML = new MediaType("application", "rss+xml");
-		APPLICATION_STREAM_JSON = new MediaType("application", "stream+json");
 		APPLICATION_XHTML_XML = new MediaType("application", "xhtml+xml");
 		APPLICATION_XML = new MediaType("application", "xml");
 		APPLICATION_YAML = new MediaType("application", "yaml");

spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonEncoder.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.
@@ -59,10 +59,9 @@ public class Jackson2JsonEncoder extends AbstractJackson2Encoder {
 		this(Jackson2ObjectMapperBuilder.json().build());
 	}
 
-	@SuppressWarnings("deprecation")
 	public Jackson2JsonEncoder(ObjectMapper mapper, MimeType... mimeTypes) {
 		super(mapper, mimeTypes);
-		setStreamingMediaTypes(Arrays.asList(MediaType.APPLICATION_NDJSON, MediaType.APPLICATION_STREAM_JSON));
+		setStreamingMediaTypes(Arrays.asList(MediaType.APPLICATION_NDJSON));
 		this.ssePrettyPrinter = initSsePrettyPrinter();
 	}
 

spring-web/src/test/java/org/springframework/http/codec/json/Jackson2JsonDecoderTests.java

@@ -53,7 +53,6 @@ import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.springframework.http.MediaType.APPLICATION_JSON;
 import static org.springframework.http.MediaType.APPLICATION_NDJSON;
-import static org.springframework.http.MediaType.APPLICATION_STREAM_JSON;
 import static org.springframework.http.MediaType.APPLICATION_XML;
 import static org.springframework.http.codec.json.Jackson2CodecSupport.JSON_VIEW_HINT;
 
@@ -77,11 +76,9 @@ class Jackson2JsonDecoderTests extends AbstractDecoderTests<Jackson2JsonDecoder>
 
 	@Override
 	@Test
-	@SuppressWarnings("deprecation")
 	public void canDecode() {
 		assertThat(decoder.canDecode(ResolvableType.forClass(Pojo.class), APPLICATION_JSON)).isTrue();
 		assertThat(decoder.canDecode(ResolvableType.forClass(Pojo.class), APPLICATION_NDJSON)).isTrue();
-		assertThat(decoder.canDecode(ResolvableType.forClass(Pojo.class), APPLICATION_STREAM_JSON)).isTrue();
 		assertThat(decoder.canDecode(ResolvableType.forClass(Pojo.class), null)).isTrue();
 
 		assertThat(decoder.canDecode(ResolvableType.forClass(String.class), null)).isFalse();

spring-web/src/test/java/org/springframework/http/codec/json/Jackson2JsonEncoderTests.java

@@ -49,11 +49,11 @@ import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.springframework.http.MediaType.APPLICATION_JSON;
 import static org.springframework.http.MediaType.APPLICATION_NDJSON;
 import static org.springframework.http.MediaType.APPLICATION_OCTET_STREAM;
-import static org.springframework.http.MediaType.APPLICATION_STREAM_JSON;
 import static org.springframework.http.MediaType.APPLICATION_XML;
 import static org.springframework.http.codec.json.Jackson2CodecSupport.JSON_VIEW_HINT;
 
 /**
+ * Tests for {@link Jackson2JsonEncoder}.
  * @author Sebastien Deleuze
  */
 class Jackson2JsonEncoderTests extends AbstractEncoderTests<Jackson2JsonEncoder> {
@@ -64,12 +64,10 @@ class Jackson2JsonEncoderTests extends AbstractEncoderTests<Jackson2JsonEncoder>
 
 	@Override
 	@Test
-	@SuppressWarnings("deprecation")
 	public void canEncode() {
 		ResolvableType pojoType = ResolvableType.forClass(Pojo.class);
 		assertThat(this.encoder.canEncode(pojoType, APPLICATION_JSON)).isTrue();
 		assertThat(this.encoder.canEncode(pojoType, APPLICATION_NDJSON)).isTrue();
-		assertThat(this.encoder.canEncode(pojoType, APPLICATION_STREAM_JSON)).isTrue();
 		assertThat(this.encoder.canEncode(pojoType, null)).isTrue();
 
 		assertThat(this.encoder.canEncode(ResolvableType.forClass(Pojo.class),
@@ -94,7 +92,7 @@ class Jackson2JsonEncoderTests extends AbstractEncoderTests<Jackson2JsonEncoder>
 				new Pojo("foofoo", "barbar"),
 				new Pojo("foofoofoo", "barbarbar"));
 
-		testEncodeAll(input, ResolvableType.forClass(Pojo.class), APPLICATION_STREAM_JSON, null, step -> step
+		testEncodeAll(input, ResolvableType.forClass(Pojo.class), APPLICATION_NDJSON, null, step -> step
 				.consumeNextWith(expectString("{\"foo\":\"foo\",\"bar\":\"bar\"}\n"))
 				.consumeNextWith(expectString("{\"foo\":\"foofoo\",\"bar\":\"barbar\"}\n"))
 				.consumeNextWith(expectString("{\"foo\":\"foofoofoo\",\"bar\":\"barbarbar\"}\n"))

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/ReactiveTypeHandler.java

@@ -201,7 +201,6 @@ class ReactiveTypeHandler {
 	 * @return the concrete streaming {@code MediaType} if one could be found or {@code null}
 	 * if none could be found
 	 */
-	@SuppressWarnings("deprecation")
 	@Nullable
 	static MediaType findConcreteJsonStreamMediaType(Collection<MediaType> acceptedMediaTypes) {
 		for (MediaType acceptedType : acceptedMediaTypes) {
@@ -220,9 +219,6 @@ class ReactiveTypeHandler {
 			else if (MediaType.APPLICATION_NDJSON.includes(acceptedType)) {
 				return MediaType.APPLICATION_NDJSON;
 			}
-			else if (MediaType.APPLICATION_STREAM_JSON.includes(acceptedType)) {
-				return MediaType.APPLICATION_STREAM_JSON;
-			}
 		}
 		return null; // not a concrete streaming type
 	}

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/method/annotation/ReactiveTypeHandlerTests.java

@@ -158,19 +158,6 @@ class ReactiveTypeHandlerTests {
 				.isEqualTo(MediaType.APPLICATION_NDJSON);
 	}
 
-	@SuppressWarnings("deprecation")
-	@Test
-	void findsConcreteStreamingMediaType_plainStreamingJsonFirst() {
-		final List<MediaType> accept = List.of(
-				MediaType.ALL,
-				MediaType.APPLICATION_STREAM_JSON,
-				MediaType.parseMediaType("application/*+x-ndjson"),
-				MediaType.parseMediaType("application/vnd.myapp.v1+x-ndjson"));
-
-		assertThat(ReactiveTypeHandler.findConcreteJsonStreamMediaType(accept))
-				.isEqualTo(MediaType.APPLICATION_STREAM_JSON);
-	}
-
 	@Test
 	void deferredResultSubscriberWithOneValue() throws Exception {