Last-Modified filter

Last-Modified filter ver. 1.2

This is a Java servlet filter (as per Servlet API 2.3). This filter lets you add Last-Modified header to the response. So you can force browser send next time If-Modified-Since header and use that information in your cache solutions. See also If-Modified filter.

How to use it:

a) download lastmodflt.jar and save it in WEB-INF/lib

b) describe this filter in web.xml.

<filter>
<filter-name>LastModFilter</filter-name>
<filter-class>com.cj.response.LastModFilter</filter-class>
</filter>

d) describe a mapping for this filter in web.xml. E.g.:

<filter-mapping>
<filter-name>LastModFilter</filter-name>
<url-pattern>/a/*.jsp</url-pattern>
</filter-mapping>

in this example filter will be on for the each .jsp file in /a subdirectory. It means that for files from this directory response will provide Last-Modified header.

For downloading:

Last-modified package: lastmodflt.jar

See also:
Response filter - add headers to your requests.
JSOS - the largest collection of servlets and filters.