SampleFilter.java

/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.sampleservletfilter.hook.filter;

import com.liferay.portal.kernel.util.WebKeys;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
 * @author Mika Koivisto
 */
public class SampleFilter implements Filter {

	@Override
	public void destroy() {
		System.out.println("Called SampleFilter.destroy()");
	}

	@Override
	public void doFilter(
			ServletRequest servletRequest, ServletResponse servletResponse,
			FilterChain filterChain)
		throws IOException, ServletException {

		String uri = (String)servletRequest.getAttribute(
			WebKeys.INVOKER_FILTER_URI);

		System.out.println(
			"Called SampleFilter.doFilter(" + servletRequest + ", " +
				servletResponse + ", " + filterChain + ") for URI " + uri);

		filterChain.doFilter(servletRequest, servletResponse);
	}

	@Override
	public void init(FilterConfig filterConfig) {
		System.out.println(
			"Called SampleFilter.init(" + filterConfig + ") where hello=" +
				filterConfig.getInitParameter("hello"));
	}

}