com.jk.web.filters.JKDefaultFilter.java Source code

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Here is the source code for com.jk.web.filters.JKDefaultFilter.java

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/*
 * Copyright 2002-2016 Jalal Kiswani.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jk.web.filters;

import java.io.IOException;
import java.util.logging.Logger;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.jk.annotations.Author;
import com.jk.resources.JKResourceLoaderFactory;
import com.jk.thread.JKThreadLocal;
import com.jk.web.JKWebConstants;
import com.jk.web.util.CharResponseWrapper;
import com.jk.web.util.JKWebContextUtil;
import com.jk.web.util.JKWebUtil;

/**
 * The Class JKDefaultFilter.
 *
 * @author Jalal Kiswani
 */
@Author(name = "Jalal H. Kiswani", date = "1/11/2014", version = "1.0")
public class JKDefaultFilter implements Filter {

    /** The logger. */
    Logger logger = Logger.getLogger(getClass().getName());

    /*
     * (non-Javadoc)
     *
     * @see javax.servlet.Filter#destroy()
     */
    @Override
    public void destroy() {

    }

    /*
     * (non-Javadoc)
     *
     * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,
     * javax.servlet.ServletResponse, javax.servlet.FilterChain)
     */
    @Override
    public void doFilter(final ServletRequest req, final ServletResponse res, final FilterChain chain)
            throws IOException, ServletException {
        try {
            final HttpServletRequest request = (HttpServletRequest) req;
            final HttpServletResponse response = (HttpServletResponse) res;
            this.logger.info("@doFilter : ".concat(request.getRequestURI()));
            JKWebContextUtil.sync(request);
            final boolean multipart = ServletFileUpload.isMultipartContent(request);
            if (!multipart) {
                final boolean toPdf = request.getParameter(JKWebConstants.PARAMTER_CONVERT_TO_PDF) != null;
                if (toPdf) {
                    this.logger.info("toPDF request");
                    final HttpServletRequestWrapper rq = new HttpServletRequestWrapper(request);
                    final CharResponseWrapper rs = new CharResponseWrapper(response);
                    chain.doFilter(rq, rs);
                    JKWebUtil.toPDF(request, response, rs.toString());
                } else {
                    chain.doFilter(request, response);
                }
            } else {
                chain.doFilter(request, response);
            }
        } catch (final Exception e) {
            if (e instanceof ServletException) {
                throw (ServletException) e;
            }
            throw new ServletException(e);
        } finally {
            JKThreadLocal.remove();
            this.logger.info("@End of doFilter");
        }
    }

    /*
     * (non-Javadoc)
     *
     * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
     */
    @Override
    public void init(final FilterConfig arg0) throws ServletException {
    }

}