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. Also you may exclude some of your files from the processing. Parameter
exclude contains a commas separated list of files excluded
from the processing. E.g.:
<filter> <filter-name>LastModFilter</filter-name> <filter-class>com.cj.response.LastModFilter</filter-class> <init-param> <param-name>exclude</param-name> <param-value>/main.htm</param-value> </init-param> </filter> For downloading: Last-modified package: lastmodflt.jar
See also JSOS - the largest collection of servlets and filters.
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Also in JSOS:
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