simplecontentviewhandler.java

Sequoia ERP是一个真正的企业级开源ERP解决方案。它提供的模块包括：电子商务应用(e-commerce), POS系统(point of sales),知识管理,存货与仓库管理

/*
 * $Id: FopPdfViewHandler.java 5462 2005-08-05 18:35:48Z jonesde $
 *
 * Copyright (c) 2003 The Open For Business Project - www.ofbiz.org
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
 * OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
package org.ofbiz.content.view;

import java.io.ByteArrayOutputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.Locale;

import org.ofbiz.base.util.Debug;
import org.ofbiz.base.util.UtilHttp;
import org.ofbiz.base.util.UtilValidate;
import org.ofbiz.base.util.UtilXml;
import org.ofbiz.base.util.UtilMisc;
import org.ofbiz.entity.util.ByteWrapper;
import org.ofbiz.entity.GenericDelegator;
import org.ofbiz.entity.GenericValue;
import org.ofbiz.entity.GenericEntityException;
import org.ofbiz.content.data.DataResourceWorker;
import org.ofbiz.webapp.control.RequestHandlerException;
import org.ofbiz.webapp.view.ViewHandler;
import org.ofbiz.webapp.view.ViewHandlerException;
import org.ofbiz.base.util.GeneralException;

/**
 * Uses XSL-FO formatted templates to generate PDF views
 * This handler will use JPublish to generate the XSL-FO
 *
 * @author     <a href="mailto:[e-mail]">Al Byers</a>
 * @version    $Rev: 5462 $
 * @since      3.0
 */
public class SimpleContentViewHandler implements ViewHandler {
    
    public static final String module = SimpleContentViewHandler.class.getName();
    protected ServletContext servletContext = null;
    
    public void init(ServletContext context) throws ViewHandlerException {
        this.servletContext = context;
    }
    /**
     * @see org.ofbiz.webapp.view.ViewHandler#render(java.lang.String, java.lang.String, java.lang.String, java.lang.String, java.lang.String, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     */
    public void render(String name, String page, String info, String contentType, String encoding, HttpServletRequest request, HttpServletResponse response) throws ViewHandlerException {
    	
        String contentId = request.getParameter("contentId");
        String rootContentId = request.getParameter("rootContentId");
    	String dataResourceId = request.getParameter("dataResourceId");
        String contentRevisionSeqId = request.getParameter("contentRevisionSeqId");
        String mimeTypeId = request.getParameter("mimeTypeId");
        ByteWrapper byteWrapper = null;
        Locale locale = UtilHttp.getLocale(request);
        String rootDir = null;
        String webSiteId = null;
        String https = null;
        
        if (UtilValidate.isEmpty(rootDir)) {
            rootDir = servletContext.getRealPath("/");
        }
        if (UtilValidate.isEmpty(webSiteId)) {
            webSiteId = (String) servletContext.getAttribute("webSiteId");
        }
        if (UtilValidate.isEmpty(https)) {
            https = (String) servletContext.getAttribute("https");
        }
    	try {
            Debug.logInfo("SCVH(0a)- dataResourceId:" + dataResourceId, module);
            GenericDelegator delegator = (GenericDelegator)request.getAttribute("delegator");
            if (UtilValidate.isEmpty(dataResourceId)) {
                if (UtilValidate.isEmpty(contentRevisionSeqId)) {
                   GenericValue content = delegator.findByPrimaryKeyCache("Content", UtilMisc.toMap("contentId", contentId));
                   dataResourceId = content.getString("dataResourceId");
                   Debug.logInfo("SCVH(0b)- dataResourceId:" + dataResourceId, module);
                } else {
                   GenericValue contentRevisionItem = delegator.findByPrimaryKeyCache("ContentRevisionItem", UtilMisc.toMap("contentId", rootContentId, "itemContentId", contentId, "contentRevisionSeqId", contentRevisionSeqId));
                   if (contentRevisionItem == null) {
                       throw new ViewHandlerException("ContentRevisionItem record not found for contentId=" + rootContentId
                                                      + ", contentRevisionSeqId=" + contentRevisionSeqId + ", itemContentId=" + contentId);
                   }
                   Debug.logInfo("SCVH(1)- contentRevisionItem:" + contentRevisionItem, module);
                   Debug.logInfo("SCVH(2)-contentId=" + rootContentId
                           + ", contentRevisionSeqId=" + contentRevisionSeqId + ", itemContentId=" + contentId, module);
                   dataResourceId = contentRevisionItem.getString("newDataResourceId");
                   Debug.logInfo("SCVH(3)- dataResourceId:" + dataResourceId, module);
                }
    		}
			GenericValue dataResource = delegator.findByPrimaryKeyCache("DataResource", UtilMisc.toMap("dataResourceId", dataResourceId));
    		byteWrapper = DataResourceWorker.getContentAsByteWrapper(delegator, dataResourceId, https, webSiteId, locale, rootDir);
    		ByteArrayInputStream bais = new ByteArrayInputStream(byteWrapper.getBytes());
            // hack for IE and mime types
            //String userAgent = request.getHeader("User-Agent");
            //if (userAgent.indexOf("MSIE") > -1) {
            //    Debug.log("Found MSIE changing mime type from - " + mimeTypeId, module);
            //    mimeTypeId = "application/octet-stream";
            //}
            // setup chararcter encoding and content type
            String charset = dataResource.getString("characterSetId");
            mimeTypeId = dataResource.getString("mimeTypeId");
            if (UtilValidate.isEmpty(charset)) {
            	charset = servletContext.getInitParameter("charset");
            }
            if (UtilValidate.isEmpty(charset)) {
            	charset = "ISO-8859-1";
            }

            // setup content type
            String contentType2 = UtilValidate.isNotEmpty(mimeTypeId) ? mimeTypeId + "; charset=" +charset : contentType;

            UtilHttp.streamContentToBrowser(response, bais, byteWrapper.getLength(), contentType2);
    	} catch(GenericEntityException e) {
            throw new ViewHandlerException(e.getMessage());
    	} catch(IOException e) {
            throw new ViewHandlerException(e.getMessage());
    	} catch(GeneralException e) {
            throw new ViewHandlerException(e.getMessage());
    	}
     }
}