Jackson Encoder/Decoder accept custom MimeType's

Issue: SPR-15474

Author: rstoyanchev

spring-web/src/main/java/org/springframework/http/codec/json/Jackson2CodecSupport.java

@@ -35,6 +35,7 @@
 import org.springframework.core.ResolvableType;
 import org.springframework.util.Assert;
 import org.springframework.util.MimeType;
+import org.springframework.util.ObjectUtils;
 
 /**
  * Base class providing support methods for Jackson 2.9 encoding and decoding.
@@ -62,19 +63,21 @@ public abstract class Jackson2CodecSupport {
 
 	protected final ObjectMapper objectMapper;
 
+	private final List<MimeType> mimeTypes;
+
 
 	/**
 	 * Constructor with a Jackson {@link ObjectMapper} to use.
 	 */
-	protected Jackson2CodecSupport(ObjectMapper objectMapper) {
+	protected Jackson2CodecSupport(ObjectMapper objectMapper, MimeType... mimeTypes) {
 		Assert.notNull(objectMapper, "ObjectMapper must not be null");
 		this.objectMapper = objectMapper;
+		this.mimeTypes = !ObjectUtils.isEmpty(mimeTypes) ? Arrays.asList(mimeTypes) : JSON_MIME_TYPES;
 	}
 
 
 	protected boolean supportsMimeType(MimeType mimeType) {
-		return (mimeType == null ||
-				JSON_MIME_TYPES.stream().anyMatch(m -> m.isCompatibleWith(mimeType)));
+		return (mimeType == null || this.mimeTypes.stream().anyMatch(m -> m.isCompatibleWith(mimeType)));
 	}
 
 	protected JavaType getJavaType(Type type, Class<?> contextClass) {

spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonDecoder.java

@@ -61,8 +61,8 @@ public Jackson2JsonDecoder() {
 		super(Jackson2ObjectMapperBuilder.json().build());
 	}
 
-	public Jackson2JsonDecoder(ObjectMapper mapper) {
-		super(mapper);
+	public Jackson2JsonDecoder(ObjectMapper mapper, MimeType... mimeTypes) {
+		super(mapper, mimeTypes);
 	}
 
 

spring-web/src/main/java/org/springframework/http/codec/json/Jackson2JsonEncoder.java

@@ -71,8 +71,8 @@ public Jackson2JsonEncoder() {
 		this(Jackson2ObjectMapperBuilder.json().build());
 	}
 
-	public Jackson2JsonEncoder(ObjectMapper mapper) {
-		super(mapper);
+	public Jackson2JsonEncoder(ObjectMapper mapper, MimeType... mimeTypes) {
+		super(mapper, mimeTypes);
 		this.streamingMediaTypes.add(MediaType.APPLICATION_STREAM_JSON);
 		this.ssePrettyPrinter = initSsePrettyPrinter();
 	}