org.apache.struts2.dispatcher.multipart
Class MultiPartRequestWrapper

java.lang.Object
  javax.servlet.ServletRequestWrapper
      javax.servlet.http.HttpServletRequestWrapper
          org.apache.struts2.dispatcher.StrutsRequestWrapper
              org.apache.struts2.dispatcher.multipart.MultiPartRequestWrapper

All Implemented Interfaces:

javax.servlet.http.HttpServletRequest, javax.servlet.ServletRequest

public class MultiPartRequestWrapper
extends StrutsRequestWrapper

Parse a multipart request and provide a wrapper around the request. The parsing implementation used depends on the struts.multipart.parser setting. It should be set to a class which extends MultiPartRequest.

The struts.multipart.parser property should be set to jakarta for the Jakarta implementation, pell for the Pell implementation and cos for the Jason Hunter implementation.

The files are uploaded when the object is instantiated. If there are any errors they are logged using addError(String). An action handling a multipart form should first check hasErrors() before doing any other processing.

An alternate implementation, PellMultiPartRequest, is provided as a plugin.

Field Summary

protected static Logger

LOG

Fields inherited from interface javax.servlet.http.HttpServletRequest

BASIC_AUTH, CLIENT_CERT_AUTH, DIGEST_AUTH, FORM_AUTH

Constructor Summary

MultiPartRequestWrapper(MultiPartRequest multiPartRequest, javax.servlet.http.HttpServletRequest request, String saveDir)
Process file downloads and log any errors.

Method Summary

protected void	addError(String anErrorMessage) Adds an error message.
String[]	getContentTypes(String name) Get an array of content encoding for the specified input field name or null if no content type was specified.
Collection<String>	getErrors() Returns a collection of any errors generated when parsing the multipart request.
String[]	getFileNames(String fieldName) Get a String array of the file names for uploaded files
Enumeration<String>	getFileParameterNames() Get an enumeration of the parameter names for uploaded files
File[]	getFiles(String fieldName) Get a File[] for the given input field name.
String[]	getFileSystemNames(String fieldName) Get the filename(s) of the file(s) uploaded for the given input field name.
String	getParameter(String name)
Map	getParameterMap()
Enumeration	getParameterNames()
String[]	getParameterValues(String name)
boolean	hasErrors() Returns true if any errors occured when parsing the HTTP multipart request, false otherwise.
protected Enumeration	mergeParams(Enumeration params1, Enumeration params2) Merges 2 enumeration of parameters as one.

Methods inherited from class org.apache.struts2.dispatcher.StrutsRequestWrapper

getAttribute

Methods inherited from class javax.servlet.http.HttpServletRequestWrapper

getAuthType, getContextPath, getCookies, getDateHeader, getHeader, getHeaderNames, getHeaders, getIntHeader, getMethod, getPathInfo, getPathTranslated, getQueryString, getRemoteUser, getRequestedSessionId, getRequestURI, getRequestURL, getServletPath, getSession, getSession, getUserPrincipal, isRequestedSessionIdFromCookie, isRequestedSessionIdFromUrl, isRequestedSessionIdFromURL, isRequestedSessionIdValid, isUserInRole

Methods inherited from class javax.servlet.ServletRequestWrapper

getAttributeNames, getCharacterEncoding, getContentLength, getContentType, getInputStream, getLocalAddr, getLocale, getLocales, getLocalName, getLocalPort, getProtocol, getReader, getRealPath, getRemoteAddr, getRemoteHost, getRemotePort, getRequest, getRequestDispatcher, getScheme, getServerName, getServerPort, isSecure, removeAttribute, setAttribute, setCharacterEncoding, setRequest

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.servlet.ServletRequest

getAttributeNames, getCharacterEncoding, getContentLength, getContentType, getInputStream, getLocalAddr, getLocale, getLocales, getLocalName, getLocalPort, getProtocol, getReader, getRealPath, getRemoteAddr, getRemoteHost, getRemotePort, getRequestDispatcher, getScheme, getServerName, getServerPort, isSecure, removeAttribute, setAttribute, setCharacterEncoding

Field Detail

LOG

protected static final Logger LOG

Constructor Detail

MultiPartRequestWrapper

public MultiPartRequestWrapper(MultiPartRequest multiPartRequest,
                               javax.servlet.http.HttpServletRequest request,
                               String saveDir)

Process file downloads and log any errors.

Parameters:

request - Our HttpServletRequest object

saveDir - Target directory for any files that we save

multiPartRequest - Our MultiPartRequest object

Method Detail

getFileParameterNames

public Enumeration<String> getFileParameterNames()

Get an enumeration of the parameter names for uploaded files

Returns:

enumeration of parameter names for uploaded files

getContentTypes

public String[] getContentTypes(String name)

Get an array of content encoding for the specified input field name or null if no content type was specified.

Parameters:

name - input field name

Returns:

an array of content encoding for the specified input field name

getFiles

public File[] getFiles(String fieldName)

Get a File[] for the given input field name.

Parameters:

fieldName - input field name

Returns:

a File[] object for files associated with the specified input field name

getFileNames

public String[] getFileNames(String fieldName)

Get a String array of the file names for uploaded files

Parameters:

fieldName - Field to check for file names.

Returns:

a String[] of file names for uploaded files

getFileSystemNames

public String[] getFileSystemNames(String fieldName)

Get the filename(s) of the file(s) uploaded for the given input field name. Returns null if the file is not found.

Parameters:

fieldName - input field name

Returns:

the filename(s) of the file(s) uploaded for the given input field name or null if name not found.

getParameter

public String getParameter(String name)

Specified by:

getParameter in interface javax.servlet.ServletRequest

Overrides:

getParameter in class javax.servlet.ServletRequestWrapper

See Also:

ServletRequest.getParameter(String)

getParameterMap

public Map getParameterMap()

Specified by:

getParameterMap in interface javax.servlet.ServletRequest

Overrides:

getParameterMap in class javax.servlet.ServletRequestWrapper

See Also:

ServletRequest.getParameterMap()

getParameterNames

public Enumeration getParameterNames()

Specified by:

getParameterNames in interface javax.servlet.ServletRequest

Overrides:

getParameterNames in class javax.servlet.ServletRequestWrapper

See Also:

ServletRequest.getParameterNames()

getParameterValues

public String[] getParameterValues(String name)

Specified by:

getParameterValues in interface javax.servlet.ServletRequest

Overrides:

getParameterValues in class javax.servlet.ServletRequestWrapper

See Also:

ServletRequest.getParameterValues(String)

hasErrors

public boolean hasErrors()

Returns true if any errors occured when parsing the HTTP multipart request, false otherwise.

Returns:

true if any errors occured when parsing the HTTP multipart request, false otherwise.

getErrors

public Collection<String> getErrors()

Returns a collection of any errors generated when parsing the multipart request.

Returns:

the error Collection.

addError

protected void addError(String anErrorMessage)

Adds an error message.

Parameters:

anErrorMessage - the error message to report.

mergeParams

protected Enumeration mergeParams(Enumeration params1,
                                  Enumeration params2)

Merges 2 enumeration of parameters as one.

Parameters:

params1 - the first enumeration.

params2 - the second enumeration.

Returns:

a single Enumeration of all elements from both Enumerations.