Package org.springframework.messaging.converter

Class MarshallingMessageConverter

java.lang.Object

org.springframework.messaging.converter.AbstractMessageConverter

org.springframework.messaging.converter.MarshallingMessageConverter

All Implemented Interfaces:

MessageConverter, SmartMessageConverter

public class MarshallingMessageConverter
extends AbstractMessageConverter

Implementation of MessageConverter that can read and write XML using Spring's Marshaller and Unmarshaller abstractions.

This converter requires a Marshaller and Unmarshaller before it can be used. These can be injected by the constructor or bean properties.

Since:

4.2

Author:

Arjen Poutsma

See Also:

• Marshaller
• Unmarshaller

Field Summary

Fields inherited from class org.springframework.messaging.converter.AbstractMessageConverter

logger

Constructor Summary

Constructors

Constructor	Description
MarshallingMessageConverter()	Default construct allowing for setMarshaller(Marshaller) and/or setUnmarshaller(Unmarshaller) to be invoked separately.
MarshallingMessageConverter(Marshaller marshaller)	Constructor with Marshaller.
MarshallingMessageConverter(MimeType... supportedMimeTypes)	Constructor with a given list of MIME types to support.

Method Summary

Modifier and Type	Method	Description
protected boolean	canConvertFrom(Message<?> message, Class<?> targetClass)
protected boolean	canConvertTo(Object payload, @Nullable MessageHeaders headers)
protected @Nullable Object	convertFromInternal(Message<?> message, Class<?> targetClass, @Nullable Object conversionHint)	Convert the message payload from serialized form to an Object.
protected @Nullable Object	convertToInternal(Object payload, @Nullable MessageHeaders headers, @Nullable Object conversionHint)	Convert the payload object to serialized form.
@Nullable Marshaller	getMarshaller()	Return the configured Marshaller.
@Nullable Unmarshaller	getUnmarshaller()	Return the configured unmarshaller.
void	setMarshaller(@Nullable Marshaller marshaller)	Set the Marshaller to be used by this message converter.
void	setUnmarshaller(@Nullable Unmarshaller unmarshaller)	Set the Unmarshaller to be used by this message converter.
protected boolean	supports(Class<?> clazz)	Whether the given class is supported by this converter.

Methods inherited from class org.springframework.messaging.converter.AbstractMessageConverter

addSupportedMimeTypes, fromMessage, fromMessage, getContentTypeResolver, getDefaultContentType, getMimeType, getSerializedPayloadClass, getSupportedMimeTypes, isStrictContentTypeMatch, setContentTypeResolver, setSerializedPayloadClass, setStrictContentTypeMatch, supportsMimeType, toMessage, toMessage

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MarshallingMessageConverter

public MarshallingMessageConverter()

Default construct allowing for setMarshaller(Marshaller) and/or setUnmarshaller(Unmarshaller) to be invoked separately.

MarshallingMessageConverter

public MarshallingMessageConverter(MimeType... supportedMimeTypes)

Constructor with a given list of MIME types to support.

Parameters:

supportedMimeTypes - the MIME types

MarshallingMessageConverter

public MarshallingMessageConverter(Marshaller marshaller)

Constructor with Marshaller. If the given Marshaller also implements Unmarshaller, it is also used for unmarshalling.

Note that all Marshaller implementations in Spring also implement Unmarshaller so that you can safely use this constructor.

Parameters:

marshaller - object used as marshaller and unmarshaller

Method Details

setMarshaller

public void setMarshaller(@Nullable Marshaller marshaller)

Set the Marshaller to be used by this message converter.

getMarshaller

public @Nullable Marshaller getMarshaller()

Return the configured Marshaller.

setUnmarshaller

public void setUnmarshaller(@Nullable Unmarshaller unmarshaller)

Set the Unmarshaller to be used by this message converter.

getUnmarshaller

public @Nullable Unmarshaller getUnmarshaller()

Return the configured unmarshaller.

canConvertFrom

protected boolean canConvertFrom(Message<?> message,
 Class<?> targetClass)

Overrides:

canConvertFrom in class AbstractMessageConverter

canConvertTo

protected boolean canConvertTo(Object payload,
 @Nullable MessageHeaders headers)

Overrides:

canConvertTo in class AbstractMessageConverter

supports

protected boolean supports(Class<?> clazz)

Description copied from class: AbstractMessageConverter

Whether the given class is supported by this converter.

Specified by:

supports in class AbstractMessageConverter

Parameters:

clazz - the class to test for support

Returns:

true if supported; false otherwise

convertFromInternal

protected @Nullable Object convertFromInternal(Message<?> message,
 Class<?> targetClass,
 @Nullable Object conversionHint)

Description copied from class: AbstractMessageConverter

Convert the message payload from serialized form to an Object.

Overrides:

convertFromInternal in class AbstractMessageConverter

Parameters:

message - the input message

targetClass - the target class for the conversion

conversionHint - an extra object passed to the MessageConverter, for example, the associated MethodParameter (may be null}

Returns:

the result of the conversion, or null if the converter cannot perform the conversion

convertToInternal

protected @Nullable Object convertToInternal(Object payload,
 @Nullable MessageHeaders headers,
 @Nullable Object conversionHint)

Description copied from class: AbstractMessageConverter

Convert the payload object to serialized form.

Overrides:

convertToInternal in class AbstractMessageConverter

Parameters:

payload - the Object to convert

headers - optional headers for the message (may be null)

conversionHint - an extra object passed to the MessageConverter, for example, the associated MethodParameter (may be null}

Returns:

the resulting payload for the message, or null if the converter cannot perform the conversion