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vincewong22 English 8 cards

Cards in this deck (8)

1What are the steps to creating a filter?implement the filter interface
2What are the methods you need to implement the Filter interface?1. doFilter()
2. init()
3. destroy
3Where do you put filtering behaviour?doFilter()
4What the arguments of doFilter?1. ServletRequest
2. ServletResponse
3. FilterChain
5What are the generla 5 steps to creating a filter?1. create a class that implements the filter interface
2. put filtering behaviour in doFilter
3. call do Filter method of the FilterChain
4. Register the filter w/ the appropriate servlets and JSP pages
5 disable invoker servlet
6What is the basic code for doFilter method?public void doFilter(ServletRequest request,
ServletResponse response,
FilterChain chain)
throws ServletException, IOException {
…
chain.doFilter(request,response);
}
7Where do you declare the filter?in the deployment descriptor
8Can a filter read/write web application wide parameters?Yes, you use methods in ServletContext