com.gm.machine.filter.CurrentUrlFilter.java Source code

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Here is the source code for com.gm.machine.filter.CurrentUrlFilter.java

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//-------------------------------------------------------------------------
// Copyright (c) 2000-2010 Digital. All Rights Reserved.
//
// This software is the confidential and proprietary information of
// Digital
//
// Original author: qingang
//
//-------------------------------------------------------------------------
// LOOSOFT MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
// THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
// PARTICULAR PURPOSE, OR NON-INFRINGEMENT. UFINITY SHALL NOT BE
// LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING,
// MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
//
// THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
// CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
// PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
// NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
// SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
// SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
// PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). UFINITY
// SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
// HIGH RISK ACTIVITIES.
//-------------------------------------------------------------------------
package com.gm.machine.filter;

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;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.xwork.StringUtils;

import cn.common.lib.util.web.RequestUtils;

/**
 * 
 * ??url
 *
 * @author            qingang
 * @version           1.0
 * @since             2012-12-12
 */
public class CurrentUrlFilter implements Filter {

    public static final String CURREQUESTURL = "curRequestUrl";

    /**
     * Filters requests to disable URL-based session identifiers.
     */
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        // skip non-http requests
        if (!(request instanceof HttpServletRequest)) {
            chain.doFilter(request, response);
            return;
        }

        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;

        //fromUrl???????
        String webUrl = RequestUtils.getAppURL(httpRequest);
        //System.out.println("weburl-------------------"+webUrl);
        String returnUrl = httpRequest.getParameter("returnurl");
        if (webUrl != null && StringUtils.isNotBlank(returnUrl)) {
            //System.out.println("returnurl-------------------"+returnUrl);
            httpRequest.getSession().setAttribute(CURREQUESTURL, returnUrl);
        } else {
            // set current request url into request as a attribute
            httpRequest.getSession().setAttribute(CURREQUESTURL, webUrl);
        }

        // process next request in chain
        chain.doFilter(request, httpResponse);
    }

    @Override
    public void destroy() {
        // TODO Auto-generated method stub

    }

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        // TODO Auto-generated method stub

    }

}