Java 将Excel转为SVG的方法

编译工具：IDEA

JDK版本：1.8.0

Excel测试文档：.xlsx 2013

Excel工具jar包：free spire.xls.jar 3.9.1

方法1：手动下载jar包。解压，将文件路径：D:...Spire.Xls-FE_3.9.1libSpire.Xls.jar中的文件导入Java程序（即本文中使用的方法）。

方法2：Maven仓库下载导入。先在maven程序中配置pom.xml文件，如下内容：

<repositories><repository> <id>com.e-iceblue</id> <url>http://repo.e-iceblue.cn/repository/maven-public/</url></repository> </repositories><dependencies> <dependency><groupId> e-iceblue </groupId><artifactId>spire.xls.free</artifactId><version>3.9.1</version> </dependency></dependencies>

完成配置后，点击“Import”下载导入。

import com.spire.xls.*;import java.io.FileOutputStream;import java.util.List;import java.util.Map;public class ExcelToSVG { public static void main(String[] args) throws Exception{//加载Excel测试文档Workbook workbook = new Workbook();workbook.loadFromFile('sample.xlsx');int count = 1;//获取分页信息List<Map<Integer, PageColRow>> pageInfoList = workbook.getSplitPageInfo();//遍历工作表for (int i = 0; i < workbook.getWorksheets().getCount(); i++){ Worksheet sheet = workbook.getWorksheets().get(i); FileOutputStream stream; Map integerPageColRowMap = pageInfoList.get(i);//获取每页sheet的分页信息 for (Object object : integerPageColRowMap.values()) {PageColRow colRow = (PageColRow) object;stream = new FileOutputStream( (count++) + '-ExcelToSVG.svg');//指定文件名输出格式//保存为SVGsheet.toSVGStream(stream, colRow.StartRow, colRow.StartCol, colRow.EndRow, colRow.EndCol);stream.flush();stream.close(); }} }}

转换结果可在IDEA项目文件夹下查看，如下图：

同样使用Free-Spire-XLS

依赖引入同上

import com.spire.xls.Worksheet;import org.apache.poi.ss.usermodel.Workbook;import sun.misc.BASE64Encoder; import javax.imageio.ImageIO;import javax.imageio.stream.ImageInputStream;import javax.servlet.http.HttpServletResponse;import java.awt.image.BufferedImage;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.InputStream; /** * Excel转换处理工具类：转为图片、svg文件等 * * @author yangfeng * @date 2019-12-26 */public class ExcelTransformUtil { /** * workbook 转为输入流 * * @param workbook * @return * @throws Exception */ public static InputStream convert2Stream(Workbook workbook) throws Exception {ByteArrayOutputStream bos = new ByteArrayOutputStream();workbook.write(bos);byte[] barray = bos.toByteArray();return new ByteArrayInputStream(barray); } /** * excel 转为图片 * * @param inputStream */ public static void excel2Img(InputStream inputStream) {com.spire.xls.Workbook book;try { book = new com.spire.xls.Workbook(); book.loadFromStream(inputStream); Worksheet sheet = book.getWorksheets().get(0); sheet.saveToImage('d://toImg.png');} catch (Exception e) { e.printStackTrace();} } /** * excel 转为SVG * * @param inputStream */ public static void excel2SVG(InputStream inputStream, HttpServletResponse response) {com.spire.xls.Workbook book;try { book = new com.spire.xls.Workbook(); book.loadFromStream(inputStream); Worksheet sheet = book.getWorksheets().get(0); sheet.toSVGStream(response.getOutputStream(), sheet.getFirstRow(), sheet.getFirstColumn(), sheet.getLastRow(), sheet.getLastColumn());} catch (Exception e) { e.printStackTrace();} }}生成svg服务

public void generateSVG(ReportRequest request, HttpServletResponse response) throws Exception {ServiceResult<List<OperationReportVO>> result = getOperationReport(request);if (result != null && result.isSucceed() && !CollectionUtils.isEmpty(result.getData())) { //转为map List<Map<String, Object>> list = MapBeanUtil.objectsToMaps(result.getData()); Workbook workbook = ReportExportUtil.generateExcelReport('运行情况统计表', getDateAndWeek(request.getPlanDate()), list, OperationReportVO.class); ExcelTransformUtil.excel2SVG(ExcelTransformUtil.convert2Stream(workbook), response);} }

此处的Workbook引自包：org.apache.poi.ss.usermodel.Workbook 。生成excel的workbook。然后将workbook转为输入流，com.spire.xls.Workbook读取输入流，转成svg。

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