com.atlassian.jira.web.servlet
Classes 
AbstractAvatarServlet
AbstractViewFileServlet
AttachmentZipServlet
BufferingRequestDispatcher
FileServerServlet
HttpResponseHeaders
InternalServerErrorServlet
IssueViewServlet
MimeSniffingKit
SearchRequestViewServlet
VelocityDecoratorServlet
ViewAttachmentServlet
ViewProjectAvatarServlet
ViewTemporaryAvatarServlet
ViewThumbnailServlet
ViewUserAvatarServlet
Exceptions 
InvalidAttachmentPathException