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Construct StringWriter instances with appropriate initial size

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Closes gh-25789

(cherry picked from commit 9dfef59af2)
This commit is contained in:
Juergen Hoeller
2020-09-18 18:14:57 +02:00
parent 547a13985a
commit 5b4f3e871f
6 changed files with 26 additions and 24 deletions
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12
spring-messaging/src/main/java/org/springframework/messaging/converter/MappingJackson2MessageConverter.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2018 the original author or authors.
* Copyright 2002-2020 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.
@@ -211,9 +211,11 @@ public class MappingJackson2MessageConverter extends AbstractMessageConverter {
JavaType javaType = getJavaType(targetClass, conversionHint);
Object payload = message.getPayload();
Class<?> view = getSerializationView(conversionHint);
// Note: in the view case, calling withType instead of forType for compatibility with Jackson <2.5
try {
if (payload instanceof byte[]) {
if (targetClass.isInstance(payload)) {
return payload;
}
else if (payload instanceof byte[]) {
if (view != null) {
return this.objectMapper.readerWithView(view).forType(javaType).readValue((byte[]) payload);
}
@@ -222,6 +224,7 @@ public class MappingJackson2MessageConverter extends AbstractMessageConverter {
}
}
else {
// Assuming a text-based source payload
if (view != null) {
return this.objectMapper.readerWithView(view).forType(javaType).readValue(payload.toString());
}
@@ -270,7 +273,8 @@ public class MappingJackson2MessageConverter extends AbstractMessageConverter {
payload = out.toByteArray();
}
else {
Writer writer = new StringWriter();
// Assuming a text-based target payload
Writer writer = new StringWriter(1024);
if (view != null) {
this.objectMapper.writerWithView(view).writeValue(writer, payload);
}

6
spring-messaging/src/main/java/org/springframework/messaging/converter/MarshallingMessageConverter.java
View File

@@ -1,5 +1,5 @@
/*
* Copyright 2002-2017 the original author or authors.
* Copyright 2002-2020 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.
@@ -173,13 +173,13 @@ public class MarshallingMessageConverter extends AbstractMessageConverter {
Assert.notNull(this.marshaller, "Property 'marshaller' is required");
try {
if (byte[].class == getSerializedPayloadClass()) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
Result result = new StreamResult(out);
this.marshaller.marshal(payload, result);
payload = out.toByteArray();
}
else {
Writer writer = new StringWriter();
Writer writer = new StringWriter(1024);
Result result = new StreamResult(writer);
this.marshaller.marshal(payload, result);
payload = writer.toString();