com.liferay.portal.struts.StrutsUtil.java Source code

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Here is the source code for com.liferay.portal.struts.StrutsUtil.java

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/**
 * 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.portal.struts;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.servlet.DirectRequestDispatcherFactoryUtil;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.PageContext;

/**
 * @author Brian Wing Shun Chan
 */
public class StrutsUtil {

    public static final String TEXT_HTML_DIR = "/html";

    public static void forward(String uri, ServletContext servletContext, HttpServletRequest httpServletRequest,
            HttpServletResponse httpServletResponse) throws ServletException {

        if (_log.isDebugEnabled()) {
            _log.debug("Forward URI " + uri);
        }

        if (uri.equals(ActionConstants.COMMON_NULL)) {
            return;
        }

        if (!httpServletResponse.isCommitted()) {
            String path = TEXT_HTML_DIR.concat(uri);

            if (_log.isDebugEnabled()) {
                _log.debug("Forward path " + path);
            }

            RequestDispatcher requestDispatcher = DirectRequestDispatcherFactoryUtil
                    .getRequestDispatcher(servletContext, path);

            try {
                requestDispatcher.forward(httpServletRequest, httpServletResponse);
            } catch (IOException ioe) {
                if (_log.isWarnEnabled()) {
                    _log.warn(ioe, ioe);
                }
            } catch (ServletException se1) {
                httpServletRequest.setAttribute(PageContext.EXCEPTION, se1.getRootCause());

                String errorPath = TEXT_HTML_DIR + "/common/error.jsp";

                requestDispatcher = DirectRequestDispatcherFactoryUtil.getRequestDispatcher(servletContext,
                        errorPath);

                try {
                    requestDispatcher.forward(httpServletRequest, httpServletResponse);
                } catch (IOException ioe2) {
                    if (_log.isWarnEnabled()) {
                        _log.warn(ioe2, ioe2);
                    }
                } catch (ServletException se2) {
                    throw se2;
                }
            }
        } else if (_log.isWarnEnabled()) {
            _log.warn(uri + " is already committed");
        }
    }

    private static final Log _log = LogFactoryUtil.getLog(StrutsUtil.class);

}