001/* 002 * Copyright 2002-2015 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.web.servlet.view.document; 018 019import java.io.IOException; 020import java.util.Map; 021 022import javax.servlet.http.HttpServletRequest; 023import javax.servlet.http.HttpServletResponse; 024 025import org.apache.poi.ss.usermodel.Workbook; 026import org.apache.poi.xssf.streaming.SXSSFWorkbook; 027 028/** 029 * Convenient superclass for Excel document views in the Office 2007 XLSX format, 030 * using POI's streaming variant. Compatible with Apache POI 3.9 and higher. 031 * 032 * <p>For working with the workbook in subclasses, see 033 * <a href="https://poi.apache.org">Apache's POI site</a>. 034 * 035 * @author Juergen Hoeller 036 * @since 4.2 037 */ 038public abstract class AbstractXlsxStreamingView extends AbstractXlsxView { 039 040 /** 041 * This implementation creates a {@link SXSSFWorkbook} for streaming the XLSX format. 042 */ 043 @Override 044 protected SXSSFWorkbook createWorkbook(Map<String, Object> model, HttpServletRequest request) { 045 return new SXSSFWorkbook(); 046 } 047 048 /** 049 * This implementation disposes of the {@link SXSSFWorkbook} when done with rendering. 050 * @see org.apache.poi.xssf.streaming.SXSSFWorkbook#dispose() 051 */ 052 @Override 053 protected void renderWorkbook(Workbook workbook, HttpServletResponse response) throws IOException { 054 super.renderWorkbook(workbook, response); 055 056 // Dispose of temporary files in case of streaming variant... 057 ((SXSSFWorkbook) workbook).dispose(); 058 } 059 060}