按照本文操作，使用 Java REST API 编辑 PowerPoint 中的页眉和页脚。它将指导您使用基于 Java 的云 SDK 使用 Java RESTful 服务设置 PowerPoint 中的页眉和页脚**。您将学习如何为整个演示文稿设置页脚或为单个幻灯片设置页脚。
先决条件
下载 Aspose.Slides Cloud SDK for Java for inserting slides footer
使用上述 SDK 设置 Java 项目，为整个演示文稿或选定的幻灯片添加页脚
使用 Java Low Code API 添加 PowerPoint 页脚的步骤
- 使用客户端 ID 和密钥实例化 SlidesApi 对象，用于设计演示文稿页脚
- 将源演示文稿文件上传到云存储以设置页脚
- 创建 HeaderFooter 类的对象并设置所有幻灯片所需的参数
- 调用 SetPresentationHeaderFooter 方法设置整个演示文稿的 HeaderFooter 对象
- 实例化另一个 HeaderFooter 对象并设置第一张幻灯片的参数
- 调用 SetSlideHeaderFooter() 方法设置特定幻灯片的页脚
- 显示页脚详细信息并在需要时保存结果演示文稿
上述步骤描述了如何使用基于 Java 的 API 在 PowerPoint 中设置页眉和页脚。创建 SlidesApi 对象，上传输入演示文稿，然后使用 SetPresentationHeaderFooter() 方法为整个演示文稿创建多个 HeaderFooter 对象，或使用 SetSlideHeaderFooter() 方法为选定的幻灯片创建多个 HeaderFooter 对象。您可以下载更新的演示文稿并显示任何页脚的详细信息。
使用 Java REST 接口为 PowerPoint 添加页脚的代码
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| import com.aspose.slides.ApiException; | |
| import com.aspose.slides.api.SlidesApi; | |
| import com.aspose.slides.model.HeaderFooter; | |
| import java.io.File; | |
| import java.io.IOException; | |
| import java.nio.file.Files; | |
| import java.nio.file.Path; | |
| import java.nio.file.StandardCopyOption; | |
| import java.time.LocalDate; | |
| import java.time.format.DateTimeFormatter; | |
| public class Example_AddHeaderFooterInPresentation { | |
| protected static SlidesApi presentationApi; | |
| public Example_AddHeaderFooterInPresentation() { | |
| if (presentationApi == null) { | |
| presentationApi = new SlidesApi("appSid", "appKey"); | |
| } | |
| } | |
| public void addHeadersFooters() throws ApiException, IOException { | |
| String localPath = "/home/downloads/"; | |
| String fileName = "Sample.pptx"; | |
| String storageFolderName = "TempTests"; | |
| presentationApi.uploadFile(storageFolderName+"/"+fileName, readFileToByteArray(localPath + fileName),null); | |
| LocalDate currentDate = LocalDate.now(); | |
| DateTimeFormatter formatter = DateTimeFormatter.ofPattern("M/d/yyyy"); | |
| String formattedDate = currentDate.format(formatter); | |
| HeaderFooter presentationFooter = new HeaderFooter(); | |
| presentationFooter.setIsDateTimeVisible(true); | |
| presentationFooter.setIsFooterVisible(true); | |
| presentationFooter.setIsSlideNumberVisible(true); | |
| presentationFooter.setDateTimeText(formattedDate); | |
| presentationFooter.setFooterText("General Footer Text for all slides"); | |
| // Add Header to presentation slide | |
| presentationApi.setPresentationHeaderFooter(fileName, presentationFooter, null, storageFolderName, null); | |
| HeaderFooter firstSlideFooter = new HeaderFooter(); | |
| firstSlideFooter.setIsDateTimeVisible(true); | |
| firstSlideFooter.setIsFooterVisible(true); | |
| firstSlideFooter.setIsSlideNumberVisible(true); | |
| firstSlideFooter.setFooterText("Text for the first slide footer"); | |
| // Add Footer to presentation slide | |
| presentationApi.setSlideHeaderFooter(fileName, 1, firstSlideFooter, null, storageFolderName, null); | |
| System.out.println(presentationFooter.toString()); | |
| System.out.println(firstSlideFooter.toString()); | |
| File presentationFile = presentationApi.downloadFile(storageFolderName+"/"+fileName, null, null); | |
| // Copy the downloaded presentation with Headers and Footers to the local directory | |
| copyFile(presentationFile, new File(localPath, fileName)); | |
| System.out.println("Presentation with Header and Footer is set and copied to: " + localPath + fileName); | |
| } | |
| public static byte[] readFileToByteArray(String filePath) throws IOException { | |
| Path path = new File(filePath).toPath(); | |
| return Files.readAllBytes(path); | |
| } | |
| private void copyFile(File sourceFile, File targetFile) throws IOException { | |
| if (sourceFile == null || !sourceFile.exists()) { | |
| throw new IOException("Source file does not exist: " + sourceFile); | |
| } | |
| // Ensure the target directory exists | |
| Path targetPath = targetFile.toPath(); | |
| Files.createDirectories(targetPath.getParent()); | |
| // Copy the file | |
| Files.copy(sourceFile.toPath(), targetPath, StandardCopyOption.REPLACE_EXISTING); | |
| } | |
| } |
此代码演示如何使用 Java REST API 设置 PPTX 或 PPT 页眉和页脚。声明 HeaderFooter 对象时，它没有任何默认值，所有参数默认设置为 NULL。要显示任何 HeaderFooter 对象的属性，您可以调用 ToString() 方法，该方法已重载以显示所有属性，包括 IsDateTimeVisible、IsSlideNumberVisible、DateTimeText 和 FooterText。
本文演示了如何使用 Java REST 接口设置 PowerPoint 和 幻灯片页脚。有关从演示文稿生成视频的信息，请参阅 使用 Java REST API 将 PowerPoint 转换为视频 上的文章。
