org.javlo.servlet

Class FileServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.javlo.servlet.FileServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

Direct Known Subclasses:

ImageTransformServlet

public class FileServlet
extends javax.servlet.http.HttpServlet

A file servlet supporting resume of downloads and client-side caching and GZIP of text content. This servlet can also be used for images, client-side caching would become more efficient. This servlet can also be used for text files, GZIP would decrease network bandwidth.

Author:

BalusC

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	FileServlet.Range This class represents a byte range.

Constructor Summary

Constructors

Constructor and Description
FileServlet()

Method Summary

Modifier and Type	Method and Description
protected void	doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process GET request.
protected void	doHead(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Process HEAD request.
protected void	processRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, boolean content)
protected void	processRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, File file, boolean content) Process the actual request.

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doOptions, doPost, doPut, doTrace, getLastModified, service, service

Methods inherited from class javax.servlet.GenericServlet

destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log

Methods inherited from class java.lang.Object

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

Constructor Detail

FileServlet

public FileServlet()

Method Detail

doHead

protected void doHead(javax.servlet.http.HttpServletRequest request,
                      javax.servlet.http.HttpServletResponse response)
               throws javax.servlet.ServletException,
                      IOException

Process HEAD request. This returns the same headers as GET request, but without content.

Overrides:

doHead in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

See Also:

HttpServlet.doHead(HttpServletRequest, HttpServletResponse).

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws javax.servlet.ServletException,
                     IOException

Process GET request.

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

See Also:

HttpServlet.doGet(HttpServletRequest, HttpServletResponse).

processRequest

protected void processRequest(javax.servlet.http.HttpServletRequest request,
                              javax.servlet.http.HttpServletResponse response,
                              boolean content)
                       throws IOException

Throws:

IOException

processRequest

protected void processRequest(javax.servlet.http.HttpServletRequest request,
                              javax.servlet.http.HttpServletResponse response,
                              File file,
                              boolean content)
                       throws IOException

Process the actual request.

Parameters:

request - The request to be processed.

response - The response to be created.

content - Whether the request body should be written (GET) or not (HEAD).

Throws:

IOException - If something fails at I/O level.