/*
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WebBox - Dein Server.
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Copyright (C) 2017 Ulrich Hilger, http://uhilger.de
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as
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published by the Free Software Foundation, either version 3 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package de.uhilger.wbx.web;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.util.logging.Logger;
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import javax.servlet.FilterChain;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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/**
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* Dieser Filter ist dem Beispiel auf
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* http://otndnld.oracle.co.jp/document/products/as10g/101300/B25221_03/web.1013/b14426/filters.htm#BCFIAAAH
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* entnommen und kann zum Testen von Filter-Konfigurationen oder als Ausgangsbasis
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* fuer komplexere Filter-Funktionen verwendet werden.
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*
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* Das Beispiel umschliesst eine beliebige Antwort vom Server mit
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* <HR>PRE</HR> <HR>POST</HR>
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*
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* @author ulrich
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*/
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public class PrePostFilter extends MyGenericFilter {
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private static final Logger logger = Logger.getLogger(PrePostFilter.class.getName());
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public void doFilter(final ServletRequest request,
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final ServletResponse response,
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FilterChain chain)
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throws IOException, ServletException {
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HttpServletRequest hr = (HttpServletRequest) request;
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logger.info("requestURL: " + hr.getRequestURL().toString());
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logger.info("ContextPath: " + hr.getContextPath());
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logger.info("ServletPath: " + hr.getServletPath());
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logger.info("PathInfo: " + hr.getPathInfo());
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OutputStream out = response.getOutputStream();
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out.write(new String("<HR>PRE<HR>").getBytes());
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GenericResponseWrapper wrapper =
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new GenericResponseWrapper((HttpServletResponse) response);
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chain.doFilter(request,wrapper);
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out.write(wrapper.getData());
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out.write(new String("<HR>POST<HR>").getBytes());
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out.close();
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}
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/*
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MarkdownProcessor p = new MarkdownProcessor();
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response.getWriter().write(p.markdown(responseContent));
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*/
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}
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