Package org.springframework.http.converter.xml

Class MarshallingHttpMessageConverter

java.lang.Object

org.springframework.http.converter.AbstractHttpMessageConverter<T>

org.springframework.http.converter.xml.AbstractXmlHttpMessageConverter<Object>

org.springframework.http.converter.xml.MarshallingHttpMessageConverter

All Implemented Interfaces:

HttpMessageConverter<Object>

public class MarshallingHttpMessageConverter
extends AbstractXmlHttpMessageConverter<Object>

Implementation of HttpMessageConverter 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.

By default, this converter supports text/xml and application/xml. This can be overridden by setting the supportedMediaTypes property.

Since:

3.0

Author:

Arjen Poutsma

Field Summary

Fields inherited from class org.springframework.http.converter.AbstractHttpMessageConverter

logger

Constructor Summary

Constructors

Constructor	Description
MarshallingHttpMessageConverter()	Construct a new MarshallingHttpMessageConverter with no Marshaller or Unmarshaller set.
MarshallingHttpMessageConverter(Marshaller marshaller)	Construct a new MarshallingMessageConverter with the given Marshaller set.
MarshallingHttpMessageConverter(Marshaller marshaller, Unmarshaller unmarshaller)	Construct a new MarshallingMessageConverter with the given Marshaller and Unmarshaller.

Method Summary

Modifier and Type	Method	Description
boolean	canRead(Class<?> clazz, MediaType mediaType)	This implementation checks if the given class is supported, and if the supported media types include the given media type.
boolean	canWrite(Class<?> clazz, MediaType mediaType)	This implementation checks if the given class is supported, and if the supported media types include the given media type.
protected Object	readFromSource(Class<?> clazz, HttpHeaders headers, Source source)	Abstract template method called from AbstractHttpMessageConverter.read(Class, HttpInputMessage).
void	setMarshaller(Marshaller marshaller)	Set the Marshaller to be used by this message converter.
void	setUnmarshaller(Unmarshaller unmarshaller)	Set the Unmarshaller to be used by this message converter.
protected boolean	supports(Class<?> clazz)	Indicates whether the given class is supported by this converter.
protected boolean	supportsRepeatableWrites(Object o)	Indicates whether this message converter can write the given object multiple times.
protected void	writeToResult(Object o, HttpHeaders headers, Result result)	Abstract template method called from AbstractXmlHttpMessageConverter.writeInternal(Object, HttpOutputMessage).

Methods inherited from class org.springframework.http.converter.xml.AbstractXmlHttpMessageConverter

readInternal, transform, writeInternal

Methods inherited from class org.springframework.http.converter.AbstractHttpMessageConverter

addDefaultHeaders, canRead, canWrite, getContentLength, getDefaultCharset, getDefaultContentType, getSupportedMediaTypes, read, setDefaultCharset, setSupportedMediaTypes, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.http.converter.HttpMessageConverter

getSupportedMediaTypes

Constructor Details

MarshallingHttpMessageConverter

public MarshallingHttpMessageConverter()

Construct a new MarshallingHttpMessageConverter with no Marshaller or Unmarshaller set. The Marshaller and Unmarshaller must be set after construction by invoking setMarshaller(Marshaller) and setUnmarshaller(Unmarshaller).

MarshallingHttpMessageConverter

public MarshallingHttpMessageConverter(Marshaller marshaller)

Construct a new MarshallingMessageConverter with the given Marshaller set.

If the given Marshaller also implements the Unmarshaller interface, it is used for both marshalling and unmarshalling. Otherwise, an exception is thrown.

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

Parameters:

marshaller - object used as marshaller and unmarshaller

MarshallingHttpMessageConverter

public MarshallingHttpMessageConverter(Marshaller marshaller,
 Unmarshaller unmarshaller)

Construct a new MarshallingMessageConverter with the given Marshaller and Unmarshaller.

Parameters:

marshaller - the Marshaller to use

unmarshaller - the Unmarshaller to use

Method Details

setMarshaller

public void setMarshaller(Marshaller marshaller)

Set the Marshaller to be used by this message converter.

setUnmarshaller

public void setUnmarshaller(Unmarshaller unmarshaller)

Set the Unmarshaller to be used by this message converter.

canRead

public boolean canRead(Class<?> clazz,
 @Nullable
 MediaType mediaType)

Description copied from class: AbstractHttpMessageConverter

This implementation checks if the given class is supported, and if the supported media types include the given media type.

Specified by:

canRead in interface HttpMessageConverter<Object>

Overrides:

canRead in class AbstractHttpMessageConverter<Object>

Parameters:

clazz - the class to test for readability

mediaType - the media type to read (can be null if not specified); typically the value of a Content-Type header.

Returns:

true if readable; false otherwise

canWrite

public boolean canWrite(Class<?> clazz,
 @Nullable
 MediaType mediaType)

Description copied from class: AbstractHttpMessageConverter

This implementation checks if the given class is supported, and if the supported media types include the given media type.

Specified by:

canWrite in interface HttpMessageConverter<Object>

Overrides:

canWrite in class AbstractHttpMessageConverter<Object>

Parameters:

clazz - the class to test for writability

mediaType - the media type to write (can be null if not specified); typically the value of an Accept header.

Returns:

true if writable; false otherwise

supports

protected boolean supports(Class<?> clazz)

Description copied from class: AbstractHttpMessageConverter

Indicates whether the given class is supported by this converter.

Specified by:

supports in class AbstractHttpMessageConverter<Object>

Parameters:

clazz - the class to test for support

Returns:

true if supported; false otherwise

readFromSource

protected Object readFromSource(Class<?> clazz,
 HttpHeaders headers,
 Source source)
                         throws Exception

Description copied from class: AbstractXmlHttpMessageConverter

Abstract template method called from AbstractHttpMessageConverter.read(Class, HttpInputMessage).

Specified by:

readFromSource in class AbstractXmlHttpMessageConverter<Object>

Parameters:

clazz - the type of object to return

headers - the HTTP input headers

source - the HTTP input body

Returns:

the converted object

Throws:

Exception - in case of I/O or conversion errors

writeToResult

protected void writeToResult(Object o,
 HttpHeaders headers,
 Result result)
                      throws Exception

Description copied from class: AbstractXmlHttpMessageConverter

Abstract template method called from AbstractXmlHttpMessageConverter.writeInternal(Object, HttpOutputMessage).

Specified by:

writeToResult in class AbstractXmlHttpMessageConverter<Object>

Parameters:

o - the object to write to the output message

headers - the HTTP output headers

result - the HTTP output body

Throws:

Exception - in case of I/O or conversion errors

supportsRepeatableWrites

protected boolean supportsRepeatableWrites(Object o)

Description copied from class: AbstractHttpMessageConverter

Indicates whether this message converter can write the given object multiple times.

Default implementation returns false.

Overrides:

supportsRepeatableWrites in class AbstractHttpMessageConverter<Object>

Parameters:

o - the object t

Returns:

true if t can be written repeatedly; false otherwise