## org.springframework.oxm.jaxb
Class Jaxb2Marshaller

    java.lang.Object
      org.springframework.oxm.jaxb.Jaxb2Marshaller

All Implemented Interfaces:
  Aware, BeanClassLoaderAware, InitializingBean, ResourceLoaderAware, GenericMarshaller, GenericUnmarshaller, Marshaller, MimeMarshaller, MimeUnmarshaller, Unmarshaller

    public class Jaxb2Marshaller

extends Object
implements MimeMarshaller, MimeUnmarshaller, GenericMarshaller, GenericUnmarshaller, BeanClassLoaderAware, ResourceLoaderAware, InitializingBean

Implementation of the `Marshaller` interface for JAXB 2.0.

The typical usage will be to set either the "contextPath" or the "classesToBeBound" property on this bean, possibly customize the marshaller and unmarshaller by setting properties, schemas, adapters, and listeners, and to refer to it.

Since:
  3.0
Author:
  Arjen Poutsma, Juergen Hoeller
See Also:
  `setContextPath(String)`, `setClassesToBeBound(Class[])`, `setJaxbContextProperties(Map)`, `setMarshallerProperties(Map)`, `setUnmarshallerProperties(Map)`, `setSchema(Resource)`, `setSchemas(Resource[])`, `setMarshallerListener(javax.xml.bind.Marshaller.Listener)`, `setUnmarshallerListener(javax.xml.bind.Unmarshaller.Listener)`, `setAdapters(XmlAdapter[])`

Field Summary
`protected Log` `logger` Logger available to subclasses

Constructor Summary
`Jaxb2Marshaller()`

Method Summary
`void` `afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`protected XmlMappingException` `convertJaxbException(JAXBException ex)` Convert the given `JAXBException` to an appropriate exception from the `org.springframework.oxm` hierarchy.
`protected Marshaller` `createMarshaller()` Return a newly created JAXB marshaller.
`protected Unmarshaller` `createUnmarshaller()` Return a newly created JAXB unmarshaller.
`Class<?>[]` `getClassesToBeBound()` Return the list of Java classes to be recognized by a newly created JAXBContext.
`String` `getContextPath()` Return the JAXB context path.
`protected JAXBContext` `getJaxbContext()`
`String[]` `getPackagesToScan()` Return the packages to search for JAXB2 annotations.
`protected void` `initJaxbMarshaller(Marshaller marshaller)` Template method that can be overridden by concrete JAXB marshallers for custom initialization behavior.
`protected void` `initJaxbUnmarshaller(Unmarshaller unmarshaller)` Template method that can be overridden by concrete JAXB marshallers for custom initialization behavior.
`void` `marshal(Object graph, Result result)` Marshals the object graph with the given root into the provided `Result`.
`void` `marshal(Object graph, Result result, MimeContainer mimeContainer)` Marshals the object graph with the given root into the provided `Result`, writing binary data to a `MimeContainer`.
`void` `setAdapters(XmlAdapter<?,?>[] adapters)` Specify the `XmlAdapter`s to be registered with the JAXB `Marshaller` and `Unmarshaller`
`void` `setBeanClassLoader(ClassLoader classLoader)` Callback that supplies the bean `class loader` to a bean instance.
`void` `setCheckForXmlRootElement(boolean checkForXmlRootElement)` Specify whether the `supports(Class)` should check for `@XmlRootElement` annotations.
`void` `setClassesToBeBound(Class<?>... classesToBeBound)` Set the list of Java classes to be recognized by a newly created JAXBContext.
`void` `setContextPath(String contextPath)` Set a JAXB context path.
`void` `setContextPaths(String... contextPaths)` Set multiple JAXB context paths.
`void` `setJaxbContextProperties(Map<String,?> jaxbContextProperties)` Set the `JAXBContext` properties.
`void` `setLazyInit(boolean lazyInit)` Set whether to lazily initialize the `JAXBContext` for this marshaller.
`void` `setMarshallerListener(Marshaller.Listener marshallerListener)` Specify the `Marshaller.Listener` to be registered with the JAXB `Marshaller`.
`void` `setMarshallerProperties(Map<String,?> properties)` Set the JAXB `Marshaller` properties.
`void` `setMtomEnabled(boolean mtomEnabled)` Specify whether MTOM support should be enabled or not.
`void` `setPackagesToScan(String[] packagesToScan)` Set the packages to search using Spring-based scanning for classes with JAXB2 annotations in the classpath.
`void` `setResourceLoader(ResourceLoader resourceLoader)` Set the ResourceLoader that this object runs in.
`void` `setSchema(Resource schemaResource)` Set the schema resource to use for validation.
`void` `setSchemaLanguage(String schemaLanguage)` Set the schema language.
`void` `setSchemaResourceResolver(LSResourceResolver schemaResourceResolver)` Set the resource resolver, as used to load the schema resources.
`void` `setSchemas(Resource[] schemaResources)` Set the schema resources to use for validation.
`void` `setSupportJaxbElementClass(boolean supportJaxbElementClass)` Specify whether the `supports(Class)` returns `true` for the `JAXBElement` class.
`void` `setUnmarshallerListener(Unmarshaller.Listener unmarshallerListener)` Set the `Unmarshaller.Listener` to be registered with the JAXB `Unmarshaller`.
`void` `setUnmarshallerProperties(Map<String,?> properties)` Set the JAXB `Unmarshaller` properties.
`void` `setValidationEventHandler(ValidationEventHandler validationEventHandler)` Set the JAXB validation event handler.
`boolean` `supports(Class<?> clazz)` Indicates whether this marshaller can marshal instances of the supplied type.
`boolean` `supports(Type genericType)` Indicates whether this marshaller can marshal instances of the supplied generic type.
`Object` `unmarshal(Source source)` Unmarshals the given `Source` into an object graph.
`Object` `unmarshal(Source source, MimeContainer mimeContainer)` Unmarshals the given provided `Source` into an object graph, reading binary attachments from a `MimeContainer`.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### logger

    protected final Log logger

  Logger available to subclasses

Constructor Detail

### Jaxb2Marshaller

    public Jaxb2Marshaller()

Method Detail

### setContextPaths

    public void setContextPaths(String... contextPaths)

  Set multiple JAXB context paths. The given array of context paths is converted to a colon-delimited string, as supported by JAXB.

### setContextPath

    public void setContextPath(String contextPath)

  Set a JAXB context path.

  Setting this property, `"classesToBeBound"`, or `"packagesToScan"` is required.

### getContextPath

    public String getContextPath()

  Return the JAXB context path.

### setClassesToBeBound

    public void setClassesToBeBound(Class<?>... classesToBeBound)

  Set the list of Java classes to be recognized by a newly created JAXBContext.

  Setting this property, `"contextPath"`, or `"packagesToScan"` is required.

### getClassesToBeBound

    public Class<?>[] getClassesToBeBound()

  Return the list of Java classes to be recognized by a newly created JAXBContext.

### setPackagesToScan

    public void setPackagesToScan(String[] packagesToScan)

  Set the packages to search using Spring-based scanning for classes with JAXB2 annotations in the classpath.

  Setting this property, `"contextPath"`, or `"classesToBeBound"` is required. This is analogous to Spring's component-scan feature (`ClassPathBeanDefinitionScanner`).

### getPackagesToScan

    public String[] getPackagesToScan()

  Return the packages to search for JAXB2 annotations.

### setJaxbContextProperties

    public void setJaxbContextProperties(Map<String,?> jaxbContextProperties)

  Set the `JAXBContext` properties. These implementation-specific properties will be set on the underlying `JAXBContext`.

### setMarshallerProperties

    public void setMarshallerProperties(Map<String,?> properties)

  Set the JAXB `Marshaller` properties. These properties will be set on the underlying JAXB `Marshaller`, and allow for features such as indentation.

  Parameters:
    `properties` - the properties
  See Also:
    `Marshaller.setProperty(String,Object)`, `Marshaller.JAXB_ENCODING`, `Marshaller.JAXB_FORMATTED_OUTPUT`, `Marshaller.JAXB_NO_NAMESPACE_SCHEMA_LOCATION`, `Marshaller.JAXB_SCHEMA_LOCATION`

### setUnmarshallerProperties

    public void setUnmarshallerProperties(Map<String,?> properties)

  Set the JAXB `Unmarshaller` properties. These properties will be set on the underlying JAXB `Unmarshaller`.

  Parameters:
    `properties` - the properties
  See Also:
    `Unmarshaller.setProperty(String,Object)`

### setMarshallerListener

    public void setMarshallerListener(Marshaller.Listener marshallerListener)

  Specify the `Marshaller.Listener` to be registered with the JAXB `Marshaller`.

### setUnmarshallerListener

    public void setUnmarshallerListener(Unmarshaller.Listener unmarshallerListener)

  Set the `Unmarshaller.Listener` to be registered with the JAXB `Unmarshaller`.

### setValidationEventHandler

    public void setValidationEventHandler(ValidationEventHandler validationEventHandler)

  Set the JAXB validation event handler. This event handler will be called by JAXB if any validation errors are encountered during calls to any of the marshal APIs.

### setAdapters

    public void setAdapters(XmlAdapter<?,?>[] adapters)

  Specify the `XmlAdapter`s to be registered with the JAXB `Marshaller` and `Unmarshaller`

### setSchema

    public void setSchema(Resource schemaResource)

  Set the schema resource to use for validation.

### setSchemas

    public void setSchemas(Resource[] schemaResources)

  Set the schema resources to use for validation.

### setSchemaLanguage

    public void setSchemaLanguage(String schemaLanguage)

  Set the schema language. Default is the W3C XML Schema: `http://www.w3.org/2001/XMLSchema"`.

  See Also:
    `XMLConstants.W3C_XML_SCHEMA_NS_URI`, `XMLConstants.RELAXNG_NS_URI`

### setSchemaResourceResolver

    public void setSchemaResourceResolver(LSResourceResolver schemaResourceResolver)

  Set the resource resolver, as used to load the schema resources.

  See Also:
    `SchemaFactory.setResourceResolver(org.w3c.dom.ls.LSResourceResolver)`, `setSchema(Resource)`, `setSchemas(Resource[])`

### setMtomEnabled

    public void setMtomEnabled(boolean mtomEnabled)

  Specify whether MTOM support should be enabled or not. Default is `false`: marshalling using XOP/MTOM not being enabled.

### setLazyInit

    public void setLazyInit(boolean lazyInit)

  Set whether to lazily initialize the `JAXBContext` for this marshaller. Default is `false` to initialize on startup; can be switched to `true`.

  Early initialization just applies if `afterPropertiesSet()` is called.

### setSupportJaxbElementClass

    public void setSupportJaxbElementClass(boolean supportJaxbElementClass)

  Specify whether the `supports(Class)` returns `true` for the `JAXBElement` class.

  Default is `false`, meaning that `supports(Class)` always returns `false` for `JAXBElement` classes (though `supports(Type)` can return `true`, since it can obtain the type parameters of `JAXBElement`).

  This property is typically enabled in combination with usage of classes like `MarshallingView`, since the `ModelAndView` does not offer type parameter information at runtime.

  See Also:
    `supports(Class)`, `supports(Type)`

### setCheckForXmlRootElement

    public void setCheckForXmlRootElement(boolean checkForXmlRootElement)

  Specify whether the `supports(Class)` should check for `@XmlRootElement` annotations.

  Default is `true`, meaning that `supports(Class)` will check for this annotation. However, some JAXB implementations (i.e. EclipseLink MOXy) allow for defining the bindings in an external definition file, thus keeping the classes annotations free. Setting this property to `false` supports these JAXB implementations.

  See Also:
    `supports(Class)`, `supports(Type)`

### setBeanClassLoader

    public void setBeanClassLoader(ClassLoader classLoader)

  Description copied from interface: `BeanClassLoaderAware`
  Callback that supplies the bean `class loader` to a bean instance.

  Invoked after the population of normal bean properties but before an initialization callback such as `InitializingBean's` `InitializingBean.afterPropertiesSet()` method or a custom init-method.

  Specified by:
    `setBeanClassLoader` in interface `BeanClassLoaderAware`
  Parameters:
    `classLoader` - the owning class loader; may be `null` in which case a default `ClassLoader` must be used, for example the `ClassLoader` obtained via `ClassUtils.getDefaultClassLoader()`

### setResourceLoader

    public void setResourceLoader(ResourceLoader resourceLoader)

  Description copied from interface: `ResourceLoaderAware`
  Set the ResourceLoader that this object runs in.

  This might be a ResourcePatternResolver, which can be checked through `instanceof ResourcePatternResolver`. See also the `ResourcePatternUtils.getResourcePatternResolver` method.

  Invoked after population of normal bean properties but before an init callback like InitializingBean's `afterPropertiesSet` or a custom init-method. Invoked before ApplicationContextAware's `setApplicationContext`.

  Specified by:
    `setResourceLoader` in interface `ResourceLoaderAware`
  Parameters:
    `resourceLoader` - ResourceLoader object to be used by this object
  See Also:
    `ResourcePatternResolver`, `ResourcePatternUtils.getResourcePatternResolver(org.springframework.core.io.ResourceLoader)`

### afterPropertiesSet

    public final void afterPropertiesSet()
                                  throws Exception

  Description copied from interface: `InitializingBean`
  Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

  This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

  Specified by:
    `afterPropertiesSet` in interface `InitializingBean`
  Throws:
    `Exception` - in the event of misconfiguration (such as failure to set an essential property) or if initialization fails.

### getJaxbContext

    protected JAXBContext getJaxbContext()

### supports

    public boolean supports(Class<?> clazz)

  Description copied from interface: `Marshaller`
  Indicates whether this marshaller can marshal instances of the supplied type.

  Specified by:
    `supports` in interface `Marshaller`
  Specified by:
    `supports` in interface `Unmarshaller`
  Parameters:
    `clazz` - the class that this marshaller is being asked if it can marshal
  Returns:
    `true` if this marshaller can indeed marshal instances of the supplied class; `false` otherwise

### supports

    public boolean supports(Type genericType)

  Description copied from interface: `GenericMarshaller`
  Indicates whether this marshaller can marshal instances of the supplied generic type.

  Specified by:
    `supports` in interface `GenericMarshaller`
  Specified by:
    `supports` in interface `GenericUnmarshaller`
  Parameters:
    `genericType` - the type that this marshaller is being asked if it can marshal
  Returns:
    `true` if this marshaller can indeed marshal instances of the supplied type; `false` otherwise

### marshal

    public void marshal(Object graph,
                        Result result)
                 throws XmlMappingException

  Description copied from interface: `Marshaller`
  Marshals the object graph with the given root into the provided `Result`.

  Specified by:
    `marshal` in interface `Marshaller`
  Parameters:
    `graph` - the root of the object graph to marshal
    `result` - the result to marshal to
  Throws:
    `XmlMappingException` - if the given object cannot be marshalled to the result

### marshal

    public void marshal(Object graph,
                        Result result,
                        MimeContainer mimeContainer)
                 throws XmlMappingException

  Description copied from interface: `MimeMarshaller`
  Marshals the object graph with the given root into the provided `Result`, writing binary data to a `MimeContainer`.

  Specified by:
    `marshal` in interface `MimeMarshaller`
  Parameters:
    `graph` - the root of the object graph to marshal
    `result` - the result to marshal to
    `mimeContainer` - the MIME container to write extracted binary content to
  Throws:
    `XmlMappingException` - if the given object cannot be marshalled to the result

### createMarshaller

    protected Marshaller createMarshaller()

  Return a newly created JAXB marshaller. JAXB marshallers are not necessarily thread safe.

### initJaxbMarshaller

    protected void initJaxbMarshaller(Marshaller marshaller)
                               throws JAXBException

  Template method that can be overridden by concrete JAXB marshallers for custom initialization behavior. Gets called after creation of JAXB `Marshaller`, and after the respective properties have been set.

  The default implementation sets the `defined properties`, the `validation event handler`, the `schemas`, `listener`, and `adapters`.

  Throws:
    `JAXBException`

### unmarshal

    public Object unmarshal(Source source)
                     throws XmlMappingException

  Description copied from interface: `Unmarshaller`
  Unmarshals the given `Source` into an object graph.

  Specified by:
    `unmarshal` in interface `Unmarshaller`
  Parameters:
    `source` - the source to marshal from
  Returns:
    the object graph
  Throws:
    `XmlMappingException` - if the given source cannot be mapped to an object

### unmarshal

    public Object unmarshal(Source source,
                            MimeContainer mimeContainer)
                     throws XmlMappingException

  Description copied from interface: `MimeUnmarshaller`
  Unmarshals the given provided `Source` into an object graph, reading binary attachments from a `MimeContainer`.

  Specified by:
    `unmarshal` in interface `MimeUnmarshaller`
  Parameters:
    `source` - the source to marshal from
    `mimeContainer` - the MIME container to read extracted binary content from
  Returns:
    the object graph
  Throws:
    `XmlMappingException` - if the given source cannot be mapped to an object

### createUnmarshaller

    protected Unmarshaller createUnmarshaller()

  Return a newly created JAXB unmarshaller. Note: JAXB unmarshallers are not necessarily thread-safe.

### initJaxbUnmarshaller

    protected void initJaxbUnmarshaller(Unmarshaller unmarshaller)
                                 throws JAXBException

  Template method that can be overridden by concrete JAXB marshallers for custom initialization behavior. Gets called after creation of JAXB `Marshaller`, and after the respective properties have been set.

  The default implementation sets the `defined properties`, the `validation event handler`, the `schemas`, `listener`, and `adapters`.

  Throws:
    `JAXBException`

### convertJaxbException

    protected XmlMappingException convertJaxbException(JAXBException ex)

  Convert the given `JAXBException` to an appropriate exception from the `org.springframework.oxm` hierarchy.

  Parameters:
    `ex` - `JAXBException` that occured
  Returns:
    the corresponding `XmlMappingException`