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## org.springframework.web.portlet.multipart
Class CommonsPortletMultipartResolver

    java.lang.Object
      org.springframework.web.multipart.commons.CommonsFileUploadSupport
          org.springframework.web.portlet.multipart.CommonsPortletMultipartResolver

All Implemented Interfaces:
  PortletContextAware, PortletMultipartResolver

    public class CommonsPortletMultipartResolver

extends CommonsFileUploadSupport
implements PortletMultipartResolver, PortletContextAware

`PortletMultipartResolver` implementation for Jakarta Commons FileUpload 1.1 or above. Commons FileUpload 1.2 or above is recommended.

Provides "maxUploadSize", "maxInMemorySize" and "defaultEncoding" settings as bean properties (inherited from `CommonsFileUploadSupport`). See corresponding PortletFileUpload / DiskFileItemFactory properties ("sizeMax", "sizeThreshold", "headerEncoding") for details in terms of defaults and accepted values.

Saves temporary files to the portlet container's temporary directory. Needs to be initialized either by an application context or via the constructor that takes a PortletContext (for standalone usage).

Since:
  2.0
Author:
  Juergen Hoeller
See Also:
  `CommonsPortletMultipartResolver(javax.portlet.PortletContext)`, `CommonsMultipartFile`, `CommonsMultipartResolver`, `PortletFileUpload`, `DiskFileItemFactory`

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.web.multipart.commons.CommonsFileUploadSupport
`CommonsFileUploadSupport.MultipartParsingResult`

Field Summary

Fields inherited from class org.springframework.web.multipart.commons.CommonsFileUploadSupport
`logger`

Constructor Summary
`CommonsPortletMultipartResolver()` Constructor for use as bean.
`CommonsPortletMultipartResolver(PortletContext portletContext)` Constructor for standalone usage.

Method Summary
`void` | `cleanupMultipart(MultipartActionRequest request)` Cleanup any resources used for the multipart handling, such as storage for any uploaded file(s).
`protected String` | `determineEncoding(ActionRequest request)` Determine the encoding for the given request.
`boolean` | `isMultipart(ActionRequest request)` Determine if the given request contains multipart content.
`protected FileUpload` | `newFileUpload(FileItemFactory fileItemFactory)` Initialize the underlying `org.apache.commons.fileupload.portlet.PortletFileUpload` instance.
`MultipartActionRequest` | `resolveMultipart(ActionRequest request)` Parse the given portlet request into multipart files and parameters, and wrap the request inside a MultipartActionRequest object that provides access to file descriptors and makes contained parameters accessible via the standard PortletRequest methods.
`void` | `setPortletContext(PortletContext portletContext)` Set the PortletContext that this object runs in.

Methods inherited from class org.springframework.web.multipart.commons.CommonsFileUploadSupport
`cleanupFileItems, getDefaultEncoding, getFileItemFactory, getFileUpload, isUploadTempDirSpecified, newFileItemFactory, parseFileItems, prepareFileUpload, setDefaultEncoding, setMaxInMemorySize, setMaxUploadSize, setUploadTempDir`

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

Constructor Detail

### CommonsPortletMultipartResolver

    public CommonsPortletMultipartResolver()

  Constructor for use as bean. Determines the portlet container's temporary directory via the PortletContext passed in as through the PortletContextAware interface (typically by an ApplicationContext).

  See Also:
    `setPortletContext(javax.portlet.PortletContext)`, `PortletContextAware`

### CommonsPortletMultipartResolver

    public CommonsPortletMultipartResolver(PortletContext portletContext)

  Constructor for standalone usage. Determines the portlet container's temporary directory via the given PortletContext.

  Parameters:
    `portletContext` - the PortletContext to use

Method Detail

### newFileUpload

    protected FileUpload newFileUpload(FileItemFactory fileItemFactory)

  Initialize the underlying `org.apache.commons.fileupload.portlet.PortletFileUpload` instance. Can be overridden to use a custom subclass, e.g. for testing purposes.

  Specified by:
    `newFileUpload` in class `CommonsFileUploadSupport`
  Parameters:
    `fileItemFactory` - the Commons FileItemFactory to build upon
  Returns:
    the new PortletFileUpload instance

### setPortletContext

    public void setPortletContext(PortletContext portletContext)

  Description copied from interface: `PortletContextAware`
  Set the PortletContext that this object runs in.

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

  Specified by:
    `setPortletContext` in interface `PortletContextAware`
  Parameters:
    `portletContext` - PortletContext object to be used by this object

### isMultipart

    public boolean isMultipart(ActionRequest request)

  Description copied from interface: `PortletMultipartResolver`
  Determine if the given request contains multipart content.

  Will typically check for content type "`multipart/form-data`", but the actually accepted requests might depend on the capabilities of the resolver implementation.

  Specified by:
    `isMultipart` in interface `PortletMultipartResolver`
  Parameters:
    `request` - the portlet request to be evaluated
  Returns:
    whether the request contains multipart content

### resolveMultipart

    public MultipartActionRequest resolveMultipart(ActionRequest request)
                                            throws MultipartException

  Description copied from interface: `PortletMultipartResolver`
  Parse the given portlet request into multipart files and parameters, and wrap the request inside a MultipartActionRequest object that provides access to file descriptors and makes contained parameters accessible via the standard PortletRequest methods.

  Specified by:
    `resolveMultipart` in interface `PortletMultipartResolver`
  Parameters:
    `request` - the portlet request to wrap (must be of a multipart content type)
  Returns:
    the wrapped portlet request
  Throws:
    `MultipartException` - if the portlet request is not multipart, or if implementation-specific problems are encountered (such as exceeding file size limits)
  See Also:
    `MultipartActionRequest.getFile(java.lang.String)`, `MultipartActionRequest.getFileNames()`, `MultipartActionRequest.getFileMap()`, `PortletRequest.getParameter(java.lang.String)`, `PortletRequest.getParameterNames()`, `PortletRequest.getParameterMap()`

### determineEncoding

    protected String determineEncoding(ActionRequest request)

  Determine the encoding for the given request. Can be overridden in subclasses.

  The default implementation checks the request encoding, falling back to the default encoding specified for this resolver.

  Parameters:
    `request` - current portlet request
  Returns:
    the encoding for the request (never `null`)
  See Also:
    `ActionRequest.getCharacterEncoding()`, `CommonsFileUploadSupport.setDefaultEncoding(java.lang.String)`

### cleanupMultipart

    public void cleanupMultipart(MultipartActionRequest request)

  Description copied from interface: `PortletMultipartResolver`
  Cleanup any resources used for the multipart handling, such as storage for any uploaded file(s).

  Specified by:
    `cleanupMultipart` in interface `PortletMultipartResolver`
  Parameters:
    `request` - the request to cleanup resources for

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