com.neurosys.site.components

Class DownloadServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

com.neurosys.site.components.DownloadServlet

All Implemented Interfaces:

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

public class DownloadServlet
extends javax.servlet.http.HttpServlet

Resources that are not in Web Context cannot be accessed via standard web based URLs. So, the Download servlet helps to reach out to those resources and fetch them onto the web client

Author:

Arjun Dhar

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static org.apache.commons.logging.Log	log

Constructor Summary

Constructors

Constructor and Description
DownloadServlet()

Method Summary

Modifier and Type	Method and Description
void	doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse resp) Gets the request.getParameter("file") from the upLoadFileLocation(imagePath) If it cant find the file (example default theme file is used); then it searches the theme images, defined by 'themeImagePath' in web.xml
void	init(javax.servlet.ServletConfig config)
protected void	setHeader(javax.servlet.http.HttpServletResponse response) Do things like set cache.

Methods inherited from class javax.servlet.http.HttpServlet

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

Methods inherited from class javax.servlet.GenericServlet

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

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.commons.logging.Log log

Constructor Detail

DownloadServlet

public DownloadServlet()

Method Detail

init

public void init(javax.servlet.ServletConfig config)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Servlet

Overrides:

init in class javax.servlet.GenericServlet

Throws:

javax.servlet.ServletException

doGet

public void doGet(javax.servlet.http.HttpServletRequest req,
                  javax.servlet.http.HttpServletResponse resp)
           throws IOException

Gets the request.getParameter("file") from the upLoadFileLocation(imagePath)
If it cant find the file (example default theme file is used); then it searches the theme images, defined by 'themeImagePath' in web.xml

Overrides:

doGet in class javax.servlet.http.HttpServlet

Throws:

IOException

See Also:

and themeImagePath in web.xml, ConfigurationHolder}

setHeader

protected void setHeader(javax.servlet.http.HttpServletResponse response)

Do things like set cache. "Cache-Control: public", "Cache-Control: private" etc. if required. By default Caching is enabled on resources public, Last-Modifies and HTTP 304 (ETag)

Parameters:

resp - as HttpServletResponse