HttpServletrequest methods not getting overriden in custom XSS filter

[Kinshuk Gupta, modificado hace 11 años.]

Hi,

I am trying to create a XSS filter for capturing all the post data. I have placed the mappings in ROOT/web.xml. The filter gets called on each request, but it doesn't enter getParameter() method. I tired overriding other methods

getInputStream() 
getReader()

but, these are also not getting overriden. Only

getQueryString()

gets overriden, but it returns only null.

Can someone explain what to do ?

Thanks