org.springframework.web.multipart.cos
Class CosMultipartResolver

java.lang.Object
  org.springframework.web.multipart.cos.CosMultipartResolver

All Implemented Interfaces:

ServletContextAware, MultipartResolver

public class CosMultipartResolver
extends Object
implements MultipartResolver, ServletContextAware

MultipartResolver implementation for Jason Hunter's COS (com.oreilly.servlet). Works with a COS MultipartRequest underneath.

Provides "maxUploadSize" and "defaultEncoding" settings as bean properties; see respective MultipartRequest constructor parameters for details. Default maximum file size is unlimited; fallback encoding is the platform's default.

Since:

06.10.2003

Author:

Juergen Hoeller

See Also:

CosMultipartHttpServletRequest, MultipartRequest

Field Summary

protected Log	logger Logger available to subclasses
static String	MULTIPART_CONTENT_TYPE Constant identifier for the mulipart content type : 'multipart/form-data'.

Constructor Summary

CosMultipartResolver()
Constructor for use as bean.

CosMultipartResolver(ServletContext servletContext)
Constructor for standalone usage.

Method Summary

void	cleanupMultipart(MultipartHttpServletRequest request) Cleanup any resources used for the multipart handling, like a storage for the uploaded files.
protected String	determineEncoding(HttpServletRequest request) Determine the encoding for the given request.
protected String	getDefaultEncoding() Return the default character encoding to use for parsing requests.
protected int	getMaxUploadSize() Return the maximum allowed size (in bytes) before uploads are refused.
protected File	getUploadTempDir() Return the temporary directory where uploaded files get stored.
boolean	isMultipart(HttpServletRequest request) Determine if the given request contains multipart content.
protected com.oreilly.servlet.MultipartRequest	newMultipartRequest(HttpServletRequest request) Create a com.oreilly.servlet.MultipartRequest for the given HTTP request.
MultipartHttpServletRequest	resolveMultipart(HttpServletRequest request) Parse the given HTTP request into multipart files and parameters, and wrap the request inside a MultipartHttpServletRequest object that provides access to file descriptors and makes contained parameters accessible via the standard ServletRequest methods.
void	setDefaultEncoding(String defaultEncoding) Set the default character encoding to use for parsing requests, to be applied to headers of individual parts and to form fields.
void	setMaxUploadSize(int maxUploadSize) Set the maximum allowed size (in bytes) before uploads are refused
void	setServletContext(ServletContext servletContext) Set the ServletContext that this object runs in.
void	setUploadTempDir(Resource uploadTempDir) Set the temporary directory where uploaded files get stored.

Methods inherited from class java.lang.Object

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

Field Detail

MULTIPART_CONTENT_TYPE

public static final String MULTIPART_CONTENT_TYPE

Constant identifier for the mulipart content type : 'multipart/form-data'.

See Also:

Constant Field Values

logger

protected final Log logger

Logger available to subclasses

Constructor Detail

CosMultipartResolver

public CosMultipartResolver()

Constructor for use as bean. Determines the servlet container's temporary directory via the ServletContext passed in as through the ServletContextAware interface (typically by a WebApplicationContext).

See Also:

setServletContext(javax.servlet.ServletContext), ServletContextAware, WebApplicationContext

CosMultipartResolver

public CosMultipartResolver(ServletContext servletContext)

Constructor for standalone usage. Determines the servlet container's temporary directory via the given ServletContext.

Parameters:

servletContext - the ServletContext to use (must not be null)

Throws:

IllegalArgumentException - if the supplied ServletContext is null

Method Detail

setMaxUploadSize

public void setMaxUploadSize(int maxUploadSize)

Set the maximum allowed size (in bytes) before uploads are refused. -1 indicates no limit (the default).

Parameters:

maxUploadSize - the maximum file size allowed

getMaxUploadSize

protected int getMaxUploadSize()

Return the maximum allowed size (in bytes) before uploads are refused.

setDefaultEncoding

public void setDefaultEncoding(String defaultEncoding)

Set the default character encoding to use for parsing requests, to be applied to headers of individual parts and to form fields. Default is ISO-8859-1, according to the Servlet spec.

If the request specifies a character encoding itself, the request encoding will override this setting. This also allows for generically overriding the character encoding in a filter that invokes the ServletRequest.setCharacterEncoding method.

Parameters:

defaultEncoding - the character encoding to use

See Also:

determineEncoding(javax.servlet.http.HttpServletRequest), ServletRequest.getCharacterEncoding(), ServletRequest.setCharacterEncoding(java.lang.String), WebUtils.DEFAULT_CHARACTER_ENCODING

getDefaultEncoding

protected String getDefaultEncoding()

Return the default character encoding to use for parsing requests.

setUploadTempDir

public void setUploadTempDir(Resource uploadTempDir)
                      throws IOException

Set the temporary directory where uploaded files get stored. Default is the servlet container's temporary directory for the web application.

Throws:

IOException

See Also:

WebUtils.TEMP_DIR_CONTEXT_ATTRIBUTE

getUploadTempDir

protected File getUploadTempDir()

Return the temporary directory where uploaded files get stored.

setServletContext

public void setServletContext(ServletContext servletContext)

Description copied from interface: ServletContextAware

Set the ServletContext 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:

setServletContext in interface ServletContextAware

Parameters:

servletContext - ServletContext object to be used by this object

See Also:

InitializingBean.afterPropertiesSet(), ApplicationContextAware.setApplicationContext(org.springframework.context.ApplicationContext)

isMultipart

public boolean isMultipart(HttpServletRequest request)

Description copied from interface: MultipartResolver

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 MultipartResolver

Parameters:

request - the servlet request to be evaluated

Returns:

whether the request contains multipart content

resolveMultipart

public MultipartHttpServletRequest resolveMultipart(HttpServletRequest request)
                                             throws MultipartException

Description copied from interface: MultipartResolver

Parse the given HTTP request into multipart files and parameters, and wrap the request inside a MultipartHttpServletRequest object that provides access to file descriptors and makes contained parameters accessible via the standard ServletRequest methods.

Specified by:

resolveMultipart in interface MultipartResolver

Parameters:

request - the servlet request to wrap (must be of a multipart content type)

Returns:

the wrapped servlet request

Throws:

MultipartException - if the servlet request is not multipart, or if implementation-specific problems are encountered (such as exceeding file size limits)

See Also:

MultipartHttpServletRequest.getFile(java.lang.String), MultipartHttpServletRequest.getFileNames(), MultipartHttpServletRequest.getFileMap(), ServletRequest.getParameter(java.lang.String), ServletRequest.getParameterNames(), ServletRequest.getParameterMap()

newMultipartRequest

protected com.oreilly.servlet.MultipartRequest newMultipartRequest(HttpServletRequest request)
                                                            throws IOException

Create a com.oreilly.servlet.MultipartRequest for the given HTTP request. Can be overridden to use a custom subclass, e.g. for testing purposes.

Parameters:

request - current HTTP request

Returns:

the new MultipartRequest

Throws:

IOException - if thrown by the MultipartRequest constructor

determineEncoding

protected String determineEncoding(HttpServletRequest 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 HTTP request

Returns:

the encoding for the request (never null)

See Also:

ServletRequest.getCharacterEncoding(), setDefaultEncoding(java.lang.String)

cleanupMultipart

public void cleanupMultipart(MultipartHttpServletRequest request)

Description copied from interface: MultipartResolver

Cleanup any resources used for the multipart handling, like a storage for the uploaded files.

Specified by:

cleanupMultipart in interface MultipartResolver

Parameters:

request - the request to cleanup resources for