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You can obtain the MultipartRequestWrapper from the ServletActionContext or by utilizing the fileUpload interceptor. The fileUpload interceptor is preferred.

Ask the ServletActionContext

MultipartRequestWrapper multipartRequest = ((MultipartRequestWrapper)ServletActionContext.getRequest())

The MultipartRequestWrapper provideds access methods such as getFiles, getFile, getContentType, hasErrors, getErrors, and so forth, so that you can process the file uploaded.

Utilize the fileUpload Interceptor

_Preferred_

• Ensure that {{fileUpload }} Interceptor is included in the Action's stack.
  • The default stack already includes {{fileUpload }}.
• Ensure that the HTML form sets the enctype and specifies on or more file type inputs.

...

public File getMyDoc()
public ContentTypeString setMyDocContentTypegetMyDocContentType()
public String setMyDocFileNamegetMyDocFileName()

Handling multiple files

When multiple files are uploaded by a form, the files are represented by an array.

...

The uploaded files can be handled by iterating through the appropriate array.

Extra Information

@see actionstruts.properties
@see org.apache.strutsstruts2.action2.dispatcher.FilterDispatcher#doFilter(SerlvetRequest, ServletRepsonse, FilterChain)
@see org.apache.struts.action2struts2.dispatcher.DispatcherUtil#wrapRequest(HttpServletRequest, SerlvetContext)
@see org.apache.strutsstruts2.action2.dispatcher.multipart.MultipartRequestWrapper
@see org.apache.struts.action2struts2.interceptor.FileUploadInterceptor