file upload

http://www.raistudies.com/spring/spring-mvc/file-upload-spring-mvc-annotation/

http://www.techiegyan.com/2009/04/20/limiting-upload-file-size-spring/

http://www.techiegyan.com/2008/06/09/ajax-file-upload-jquery-plugin/

http://stackoverflow.com/questions/4029583/using-spring-3-exceptionhandler-with-commons-fileupload-and-sizelimitexceededex

http://stackoverflow.com/questions/12076818/file-upload-with-spring-mvc

http://springsourcery.org/springSourcery/content/viewContent,1,32.html

http://www.codeproject.com/Articles/460142/ASP-NET-Multiple-File-Upload-With-Drag-Drop-and-Pr