diff --git a/spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Encoder.java b/spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Encoder.java
index 29f8fc78925..0cf1d3f0218 100644
--- a/spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Encoder.java
+++ b/spring-web/src/main/java/org/springframework/http/codec/json/AbstractJackson2Encoder.java
@@ -69,7 +69,7 @@ public abstract class AbstractJackson2Encoder extends Jackson2CodecSupport imple
 
 	private static final Map<MediaType, byte[]> STREAM_SEPARATORS;
 
-	private static final Map<Charset, JsonEncoding> ENCODINGS;
+	private static final Map<String, JsonEncoding> ENCODINGS;
 
 	static {
 		STREAM_SEPARATORS = new HashMap<>(4);
@@ -78,8 +78,7 @@ public abstract class AbstractJackson2Encoder extends Jackson2CodecSupport imple
 
 		ENCODINGS = new HashMap<>(JsonEncoding.values().length);
 		for (JsonEncoding encoding : JsonEncoding.values()) {
-			Charset charset = Charset.forName(encoding.getJavaName());
-			ENCODINGS.put(charset, encoding);
+			ENCODINGS.put(encoding.getJavaName(), encoding);
 		}
 	}
 
@@ -116,7 +115,7 @@ public abstract class AbstractJackson2Encoder extends Jackson2CodecSupport imple
 		}
 		if (mimeType != null && mimeType.getCharset() != null) {
 			Charset charset = mimeType.getCharset();
-			if (!ENCODINGS.containsKey(charset)) {
+			if (!ENCODINGS.containsKey(charset.name())) {
 				return false;
 			}
 		}
@@ -286,7 +285,7 @@ public abstract class AbstractJackson2Encoder extends Jackson2CodecSupport imple
 	protected JsonEncoding getJsonEncoding(@Nullable MimeType mimeType) {
 		if (mimeType != null && mimeType.getCharset() != null) {
 			Charset charset = mimeType.getCharset();
-			JsonEncoding result = ENCODINGS.get(charset);
+			JsonEncoding result = ENCODINGS.get(charset.name());
 			if (result != null) {
 				return result;
 			}
diff --git a/spring-web/src/main/java/org/springframework/http/converter/json/AbstractJackson2HttpMessageConverter.java b/spring-web/src/main/java/org/springframework/http/converter/json/AbstractJackson2HttpMessageConverter.java
index eb3d3bf9fc1..c9df1273673 100644
--- a/spring-web/src/main/java/org/springframework/http/converter/json/AbstractJackson2HttpMessageConverter.java
+++ b/spring-web/src/main/java/org/springframework/http/converter/json/AbstractJackson2HttpMessageConverter.java
@@ -76,7 +76,7 @@ import org.springframework.util.TypeUtils;
  */
 public abstract class AbstractJackson2HttpMessageConverter extends AbstractGenericHttpMessageConverter<Object> {
 
-	private static final Map<Charset, JsonEncoding> ENCODINGS = jsonEncodings();
+	private static final Map<String, JsonEncoding> ENCODINGS = jsonEncodings();
 
 	/**
 	 * The default charset used by the converter.
@@ -183,7 +183,7 @@ public abstract class AbstractJackson2HttpMessageConverter extends AbstractGener
 		}
 		if (mediaType != null && mediaType.getCharset() != null) {
 			Charset charset = mediaType.getCharset();
-			if (!ENCODINGS.containsKey(charset)) {
+			if (!ENCODINGS.containsKey(charset.name())) {
 				return false;
 			}
 		}
@@ -246,7 +246,7 @@ public abstract class AbstractJackson2HttpMessageConverter extends AbstractGener
 		MediaType contentType = inputMessage.getHeaders().getContentType();
 		Charset charset = getCharset(contentType);
 
-		boolean isUnicode = ENCODINGS.containsKey(charset);
+		boolean isUnicode = ENCODINGS.containsKey(charset.name());
 		try {
 			if (inputMessage instanceof MappingJacksonInputMessage) {
 				Class<?> deserializationView = ((MappingJacksonInputMessage) inputMessage).getDeserializationView();
@@ -373,7 +373,7 @@ public abstract class AbstractJackson2HttpMessageConverter extends AbstractGener
 	protected JsonEncoding getJsonEncoding(@Nullable MediaType contentType) {
 		if (contentType != null && contentType.getCharset() != null) {
 			Charset charset = contentType.getCharset();
-			JsonEncoding encoding = ENCODINGS.get(charset);
+			JsonEncoding encoding = ENCODINGS.get(charset.name());
 			if (encoding != null) {
 				return encoding;
 			}
@@ -398,9 +398,9 @@ public abstract class AbstractJackson2HttpMessageConverter extends AbstractGener
 		return super.getContentLength(object, contentType);
 	}
 
-	private static Map<Charset, JsonEncoding> jsonEncodings() {
+	private static Map<String, JsonEncoding> jsonEncodings() {
 		return EnumSet.allOf(JsonEncoding.class).stream()
-				.collect(Collectors.toMap(encoding -> Charset.forName(encoding.getJavaName()), Function.identity()));
+				.collect(Collectors.toMap(JsonEncoding::getJavaName, Function.identity()));
 	}
 
 }