usernamefilter.java

java写的blog

/*
 * Created on 2004-10-8
 * Author: Xuefeng, Copyright (C) 2004, Xuefeng.
 */
package org.crystalblog.web.filter;

import javax.servlet.*;
import javax.servlet.http.*;

/**
 * To redirect /~username to /!username.c
 */
public final class UsernameFilter implements Filter {

    public void init(FilterConfig filterConfig) throws ServletException {}

    public void destroy() {}

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
        throws java.io.IOException, ServletException
    {
        HttpServletRequest req = (HttpServletRequest)request;
        String url = req.getRequestURL().toString();
        System.out.println("UsernameFilter URL = " + url);
        int n = url.lastIndexOf("~");
        //((HttpServletResponse)response).sendRedirect("/!" + url.substring(n+1) + ".c");
    }

}