This is a Java servlet filter (as per Servlet API 2.3). This filter checks referrer field in the source request, parses its parameters and saves them as a HashMap in the request scope. This filter lets you obtain the search words when a client comes to your site from a search engine query. How to use it: a) download refparamflt.jar and save it in WEB-INF/lib b) describe this filter in web.xml:
<filter> <filter-name>RefererParamsFilter</filter-name> <filter-class>com.cj.refparam.RefererParamsFilter</filter-class> </filter> c) describe a mapping for this filter in web.xml
<filter-mapping> <filter-name>RefererParamsFilter</filter-name> <url-pattern>*.jsp</url-pattern> </filter-mapping> in this case filter will be on for the each .jsp file. So in your JSP file
the code:
For downloading: Referer parameters filter: refparamflt.jar See also JSOS - the largest collection of servlets and filters.
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Also in JSOS:
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