foppdfviewhandler.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 6535 2006-01-22 03:53:59Z jaz $
 *
 * 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.webapp.view;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.StringWriter;
import java.io.Writer;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.ofbiz.base.util.Debug;
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]">Andy Zeneski</a>
 * @version    $Rev: 6535 $
 * @since      3.0
 */
public class FopPdfViewHandler extends JPublishViewHandler {
    
    public static final String module = FopPdfViewHandler.class.getName();
    
    /**
     * @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 {
        // render and obtain the XSL-FO 
        Writer writer = new StringWriter();
        try {
            wrapper.render(page, request, response, writer, null, false);
        } catch (Throwable t) {
            throw new ViewHandlerException("Problems with the response writer/output stream", t);
        }
        if (Debug.verboseOn()) {
            Debug.logVerbose("XSL-FO : " + writer.toString(), module);
        }
        
        // render the byte array
        ByteArrayOutputStream out = null;
        try {
            out = FopRenderer.render(writer);
        } catch (GeneralException e) {
            throw new ViewHandlerException(e.getMessage(), e.getNested());
        }
                  
        // set the content type and length                    
        response.setContentType("application/pdf");        
        response.setContentLength(out.size());
        
        // write to the browser
        try {            
            out.writeTo(response.getOutputStream());
            response.getOutputStream().flush();
        } catch (IOException e) {
            throw new ViewHandlerException("Unable write to browser OutputStream", e);            
        }                             
    }
}