Merge branch '5.2.x'

spring-context-support/src/main/java/org/springframework/ui/freemarker/FreeMarkerTemplateUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 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.
@@ -46,7 +46,7 @@ public abstract class FreeMarkerTemplateUtils {
 	public static String processTemplateIntoString(Template template, Object model)
 			throws IOException, TemplateException {
 
-		StringWriter result = new StringWriter();
+		StringWriter result = new StringWriter(1024);
 		template.process(model, result);
 		return result.toString();
 	}

spring-context/src/main/java/org/springframework/scheduling/concurrent/DefaultManagedTaskScheduler.java

@@ -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.
@@ -37,10 +37,11 @@ import org.springframework.lang.Nullable;
  *
  * @author Juergen Hoeller
  * @since 4.0
+ * @see javax.enterprise.concurrent.ManagedScheduledExecutorService
  */
 public class DefaultManagedTaskScheduler extends ConcurrentTaskScheduler implements InitializingBean {
 
-	private JndiLocatorDelegate jndiLocator = new JndiLocatorDelegate();
+	private final JndiLocatorDelegate jndiLocator = new JndiLocatorDelegate();
 
 	@Nullable
 	private String jndiName = "java:comp/DefaultManagedScheduledExecutorService";

spring-core/src/main/java/org/springframework/util/FileCopyUtils.java

@@ -218,7 +218,7 @@ public abstract class FileCopyUtils {
 			return "";
 		}
 
-		StringWriter out = new StringWriter();
+		StringWriter out = new StringWriter(BUFFER_SIZE);
 		copy(in, out);
 		return out.toString();
 	}

spring-jms/src/main/java/org/springframework/jms/support/converter/MappingJackson2MessageConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 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.
@@ -275,7 +275,7 @@ public class MappingJackson2MessageConverter implements SmartMessageConverter, B
 	protected TextMessage mapToTextMessage(Object object, Session session, ObjectWriter objectWriter)
 			throws JMSException, IOException {
 
-		StringWriter writer = new StringWriter();
+		StringWriter writer = new StringWriter(1024);
 		objectWriter.writeValue(writer, object);
 		return session.createTextMessage(writer.toString());
 	}

spring-jms/src/main/java/org/springframework/jms/support/converter/MarshallingMessageConverter.java

@@ -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.
@@ -48,8 +48,6 @@ import org.springframework.util.Assert;
  * @author Arjen Poutsma
  * @author Juergen Hoeller
  * @since 3.0
- * @see org.springframework.jms.core.JmsTemplate#convertAndSend
- * @see org.springframework.jms.core.JmsTemplate#receiveAndConvert
  */
 public class MarshallingMessageConverter implements MessageConverter, InitializingBean {
 
@@ -215,7 +213,7 @@ public class MarshallingMessageConverter implements MessageConverter, Initializi
 	protected TextMessage marshalToTextMessage(Object object, Session session, Marshaller marshaller)
 			throws JMSException, IOException, XmlMappingException {
 
-		StringWriter writer = new StringWriter();
+		StringWriter writer = new StringWriter(1024);
 		Result result = new StreamResult(writer);
 		marshaller.marshal(object, result);
 		return session.createTextMessage(writer.toString());

spring-messaging/src/main/java/org/springframework/messaging/converter/MappingJackson2MessageConverter.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 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.
@@ -209,9 +209,11 @@ 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);
 				}
@@ -219,10 +221,8 @@ public class MappingJackson2MessageConverter extends AbstractMessageConverter {
 					return this.objectMapper.readValue((byte[]) payload, javaType);
 				}
 			}
-			else if (targetClass.isInstance(payload)) {
-				return payload;
-			}
 			else {
+				// Assuming a text-based source payload
 				if (view != null) {
 					return this.objectMapper.readerWithView(view).forType(javaType).readValue(payload.toString());
 				}
@@ -271,7 +271,8 @@ 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);
 				}

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 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.
@@ -172,13 +172,13 @@ 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();

spring-web/src/main/java/org/springframework/http/client/reactive/ReactorClientHttpResponse.java

@@ -130,9 +130,7 @@ class ReactorClientHttpResponse implements ClientHttpResponse {
 	public MultiValueMap<String, ResponseCookie> getCookies() {
 		MultiValueMap<String, ResponseCookie> result = new LinkedMultiValueMap<>();
 		this.response.cookies().values().stream().flatMap(Collection::stream)
-				.forEach(c ->
+				.forEach(c -> result.add(c.name(), ResponseCookie.fromClientResponse(c.name(), c.value())
-
-					result.add(c.name(), ResponseCookie.fromClientResponse(c.name(), c.value())
 						.domain(c.domain())
 						.path(c.path())
 						.maxAge(c.maxAge())