com.googlecode.webutilities.filters
Class ResponseCacheFilter

java.lang.Object
  com.googlecode.webutilities.filters.common.AbstractFilter
      com.googlecode.webutilities.filters.ResponseCacheFilter

All Implemented Interfaces:

IgnoreAcceptContext, javax.servlet.Filter

public class ResponseCacheFilter
extends AbstractFilter

The ResponseCacheFilter is implemented as Servlet Filter to enable caching of STATIC resources (JS, CSS, static HTML files)

This enables the server side caching of the static resources, where client caching is done using JSCSSMergeServlet by setting appropriate expires/Cache-Control headers.

Usage

Put the webutilities-x.y.z.jar in your classpath (WEB-INF/lib folder of your webapp).

Declare this filter in your web.xml ( web descriptor file)

 ...
 <filter>
        <filter-name>responseCacheFilter</filter-name>
        <filter-class>com.googlecode.webutilities.filters.ResponseCacheFilter</filter-class>
 </filter>
 ...
 

Map this filter on your JS and CSS resources

 ...
 <filter-mapping>
   <filter-name>responseCacheFilter</filter-name>
   <url-pattern>*.js</url-pattern>
   <url-pattern>*.json</url-pattern>
   <url-pattern>*.css</url-pattern>
 </filter-mapping>
 ...
 

And you are all done!

Visit http://code.google.com/p/webutilities/wiki/ResponseCacheFilter for more details.

Version:

1.0

Author:

rpatil

Field Summary

Fields inherited from class com.googlecode.webutilities.filters.common.AbstractFilter

filterConfig

Constructor Summary

ResponseCacheFilter()

Method Summary

void	doFilter(javax.servlet.ServletRequest servletRequest, javax.servlet.ServletResponse servletResponse, javax.servlet.FilterChain filterChain)
void	init(javax.servlet.FilterConfig filterConfig)

Methods inherited from class com.googlecode.webutilities.filters.common.AbstractFilter

destroy, isMIMEAccepted, isURLAccepted, isUserAgentAccepted

Methods inherited from class java.lang.Object

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

Constructor Detail

ResponseCacheFilter

public ResponseCacheFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)
          throws javax.servlet.ServletException

Specified by:

init in interface javax.servlet.Filter

Overrides:

init in class AbstractFilter

Throws:

javax.servlet.ServletException

doFilter

public void doFilter(javax.servlet.ServletRequest servletRequest,
                     javax.servlet.ServletResponse servletResponse,
                     javax.servlet.FilterChain filterChain)
              throws IOException,
                     javax.servlet.ServletException

Throws:

IOException

javax.servlet.ServletException