项目需求
最近项目中有一个需求就是让Java代码去代替人工操作，自动生成PPT，具体就是查询数据库数据，然后根据模板文件（PPT），将数据库数据与模板文件（PPT），进行组合一下。生成新的PPT文件。
模板文件如下：
将模板文件中的姓名，进步率，连续进步次数，图片。替换为具体的人员信息。
实现过程：
1.引入第三方依赖
<dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>3.15</version> </dependency>
Apache POI 是用Java编写的免费开源的跨平台的 Java API，Apache POI提供API给Java程式对Microsoft Office格式档案读和写的功能。POI为“Poor Obfuscation Implementation”的首字母缩写，意为“简洁版的模糊实现”。
HSSF－提供读写MicrosoftExcelXLS格式档案的功能 XSSF－提供读写MicrosoftExcelOOXMLXLSX格式档案的功能 HWPF－提供读写MicrosoftWordDOC格式档案的功能 HSLF－提供读写MicrosoftPowerPoint格式档案的功能 HDGF－提供读MicrosoftVisio格式档案的功能 HPBF－提供读MicrosoftPublisher格式档案的功能 HSMF－提供读MicrosoftOutlook格式档案的功能
2.编写业务代码
import org.apache.poi.sl.usermodel.Shape; import org.apache.poi.sl.usermodel.Slide; import org.apache.poi.xslf.usermodel.XMLSlideShow; import java.io.*; import java.util.List; /** * 读取模板PPT生成新的PPT文件 * * @author Promsing(张有博) * @version 1.0.0 * @since 2022/2/11 - 15:37 */ public class RenderPowerPointTemplate extends BasePowerPointFileUtil { /** * 读取PPT模板 * @param powerPoint * @param * @throws IOException */ public static void renderPowerPointTemplateOfCertificate(InputStream powerPoint, List<WeekAnalyseModel> lists, String rankType) throws IOException { //List<WeekAnalyseModel>是我们项目自己定义的model，可改成其他业务的model if(powerPoint == null) { return; } //创建一个幻灯片 XMLSlideShow slideShow = new XMLSlideShow(powerPoint); //从幻灯片中获取每个页 List slides = slideShow.getSlides(); //遍历每一页PPT for (int i = 0 ; i < slides.size() ; i++) { //幻灯片布局，文本框，矩形框之类的，遍历一页PPT中的所有控件 List shapes = ((Slide)slides.get(i)).getShapes(); for (int j = 0 ; j < shapes.size() ; j++) { Shape shape = (Shape) shapes.get(j); RenderPowerPointTemplate.renderShapeAndPicture(shape, lists.get(i),rankType); } } //新PPT的位置，file就是新的PPT文件 File file=new File(rankType+"test.pptx"); OutputStream outputStreams = new FileOutputStream(file); slideShow.write(outputStreams); // FileUpLoadUtil.T_THREAD_LOCAL.set(file.getAbsolutePath()); System.out.println("新文件的路径:"+file.getAbsolutePath()); } }
import com.tfjybj.integral.constant.CommonConstant; import com.tfjybj.integral.model.WeekAnalyseModel; import com.tfjybj.integral.utils.SimplifiedDate; import org.apache.commons.io.FileUtils; import org.apache.poi.sl.usermodel.Shape; import org.apache.poi.sl.usermodel.*; import org.apache.poi.xslf.usermodel.XSLFTextRun; import org.apache.poi.xslf.usermodel.XSLFTextShape; import java.awt.*; import java.io.*; import java.net.URL; import java.util.ArrayList; import java.util.Iterator; import java.util.List; /** * <p>PowerPoint文件工具基类 * <p> * <p>通用的PowerPoint文件工具基类，可用于从PowerPoint文档中抽取文本信息 */ public class BasePowerPointFileUtil { /** * 渲染、绘制文本框 * * @param shape * @param data */ public static void renderShapeAndPicture(Shape shape, WeekAnalyseModel data,String rankType) { //判断是否是文本框 if (shape instanceof TextShape) { BasePowerPointFileUtil.replace(shape, data,rankType); } else if (shape instanceof GroupShape) { Iterator groupShapes = ((GroupShape) shape).iterator(); while (groupShapes.hasNext()) { Shape groupShape = (Shape) groupShapes.next(); BasePowerPointFileUtil.renderShapeAndPicture(groupShape, data,rankType); } } else if (shape instanceof TableShape) { TableShape tableShape = ((TableShape) shape); int column = tableShape.getNumberOfColumns(); int row = tableShape.getNumberOfRows(); for (int r = 0; r < row; r++) { for (int c = 0; c < column; c++) { BasePowerPointFileUtil.replace(tableShape.getCell(r, c), data,rankType); } } } else if (shape instanceof PictureShape) { //判断是否是图片框 PictureShape pictureShape = (PictureShape) shape; PictureData pictureData = pictureShape.getPictureData(); byte[] bytes = BufferStreamForByte(URLToFile(data.getPictureURL()), 1024); try { pictureData.setData(bytes); } catch (IOException e) { e.printStackTrace(); } } } /** * 替换模板PPT中的值 * * @param shape * @param weekAnalyseModel */ public static void replace(Shape shape, WeekAnalyseModel weekAnalyseModel,String rankType) { //List<WeekAnalyseModel>是我们项目自己定义的model，可改成其他业务的model if (shape instanceof TextShape) { String replaceText = ((XSLFTextShape) shape).getText(); XSLFTextRun xslfTextRun = null; //替换数据的业务逻辑，待优化 switch (replaceText) { case "姓名：闪耀姓名1": xslfTextRun = ((XSLFTextShape) shape).setText("姓名：" + weekAnalyseModel.getUserName()); break; case "积分：闪耀分数1": xslfTextRun = ((XSLFTextShape) shape).setText("积分：" + weekAnalyseModel.getWeekData()); break; case "闪耀1连击ヾ": xslfTextRun = ((XSLFTextShape) shape).setText("闪耀" + weekAnalyseModel.getListNumber() + "连击ヾ"); break; case "姓名：闪耀姓名2": xslfTextRun = ((XSLFTextShape) shape).setText("姓名：" + weekAnalyseModel.getUserName()); break; case "积分：闪耀分数2": xslfTextRun = ((XSLFTextShape) shape).setText("积分：" + weekAnalyseModel.getWeekData()); break; case "闪耀2连击ヾ": xslfTextRun = ((XSLFTextShape) shape).setText("闪耀" + weekAnalyseModel.getListNumber() + "连击ヾ"); break; } //空值过滤，设置样式 if (xslfTextRun != null) { if (rankType.equals("闪耀之星")||rankType.equals("进步之星")){ setTextStyle(xslfTextRun); }else if (rankType.equals("闪耀之星荣誉证书")||rankType.equals("进步之星荣誉证书")){ setTextStyleCertificate(xslfTextRun); } } } } /** * 设置字体样式 * * @param xslfTextRun */ private static void setTextStyle(XSLFTextRun xslfTextRun) { xslfTextRun.setFontFamily("等线(正文)"); Color color = new Color(255, 255, 255); xslfTextRun.setFontColor(color); xslfTextRun.setFontSize(40.0); xslfTextRun.setBold(true); } /** * 设置证书字体样式 * * @param xslfTextRun */ private static void setTextStyleCertificate(XSLFTextRun xslfTextRun) { xslfTextRun.setFontFamily("宋体"); Color color = new Color(0, 0, 0); xslfTextRun.setFontColor(color); xslfTextRun.setFontSize(32.0); xslfTextRun.setBold(true); } /** * 将文件转为字节数组 * @param file * @param size * @return */ public static byte[] BufferStreamForByte(File file, int size) { byte[] content = null; try { BufferedInputStream bis = null; ByteArrayOutputStream out = null; try { FileInputStream input = new FileInputStream(file); bis = new BufferedInputStream(input, size); byte[] bytes = new byte[1024]; int len; out = new ByteArrayOutputStream(); while ((len = bis.read(bytes)) > 0) { out.write(bytes, 0, len); } bis.close(); content = out.toByteArray(); } finally { if (bis != null) { bis.close(); } if (out != null) { out.close(); } } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return content; } /** * 读取网络中的图片 * @param url https://www.kziyue.com/wp-content/uploads/2019/06/5bca-hxyuaph9825616.jpg * @return */ public static File URLToFile(String url){ File file1 = new File("test.mp4"); try { URL url1 = new URL(url); FileUtils.copyURLToFile(url1,file1); } catch (IOException e) { e.printStackTrace(); } File absoluteFile = file1.getAbsoluteFile(); return file1; } }
3.根据模板生成新的PPT
