在 Java 中為 PPTX 添加水印：使用 GroupDocs.Watermark 的動態簡報

<repositories>
   <repository>
      <id>repository.groupdocs.com</id>
      <name>GroupDocs Repository</name>
      <url>https://releases.groupdocs.com/watermark/java/</url>
   </repository>
</repositories>

<dependencies>
   <dependency>
      <groupId>com.groupdocs</groupId>
      <artifactId>groupdocs-watermark</artifactId>
      <version>24.11</version>
   </dependency>
</dependencies>

// Import necessary GroupDocs classes
import com.groupdocs.watermark.Watermarker;

public class WatermarkSetup {
    public static void main(String[] args) {
        // Initialize the watermarker with presentation file path
        String documentPath = "YOUR_DOCUMENT_DIRECTORY/presentation.pptx";
        try (Watermarker watermarker = new Watermarker(documentPath)) {
            System.out.println("Watermarker initialized successfully!");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import com.groupdocs.watermark.options.PresentationLoadOptions;
import java.io.File;

// Set the path for your document directory
String documentPath = "YOUR_DOCUMENT_DIRECTORY/presentation.pptx";
PresentationLoadOptions loadOptions = new PresentationLoadOptions();

try (Watermarker watermarker = new Watermarker(documentPath, loadOptions)) {
    System.out.println("Loaded presentation successfully!");
}

// Ensure this is done within a try-with-resources block or explicitly in a finally block.
watermarker.close();

import java.io.File;
import java.io.FileInputStream;

String imagePath = "YOUR_DOCUMENT_DIRECTORY/background.png";
File imageFile = new File(imagePath);
byte[] imageBytes = new byte[(int) imageFile.length()];

try (InputStream imageInputStream = new FileInputStream(imageFile)) {
    imageInputStream.read(imageBytes);
}

import com.groupdocs.watermark.contents.PresentationContent;
import com.groupdocs.watermark.contents.PresentationSlide;

try (Watermarker watermarker = new Watermarker(documentPath, loadOptions)) {
    PresentationContent content = watermarker.getContent(PresentationContent.class);
    PresentationSlide slide = content.getSlides().get_Item(0);

    // Proceed with watermarking...
}

import com.groupdocs.watermark.contents.PresentationWatermarkableImage;

slide.getImageFillFormat().setBackgroundImage(new PresentationWatermarkableImage(imageBytes));
slide.getImageFillFormat().setTileAsTexture(true); // Enable tiling effect
slide.getImageFillFormat().setTransparency(0.5);  // Set semi-transparency

// Save the modified presentation
String outputPath = "YOUR_OUTPUT_DIRECTORY/output_presentation.pptx";
watermarker.save(outputPath);