Java word文档生成水印 代码

Here is an example Java code that generates a watermark on a Word document:

import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;

public class WatermarkGenerator {
    public static void main(String[] args) {
        try {
            // Open the Word document
            FileInputStream inputStream = new FileInputStream("sample.docx");
            XWPFDocument doc = new XWPFDocument(inputStream);

            // Iterate over each paragraph
            for (XWPFParagraph paragraph : doc.getParagraphs()) {
                XWPFRun run = paragraph.createRun();
                run.setText("SAMPLE DOCUMENT");
                run.setFontSize(36);
                run.setColor("999999");
                run.setFontFamily("Courier");
                run.setTextPosition(100);
                run.setBold(true);
                paragraph.setAlignment(XWPFParagraph.Alignment.CENTER);
            }

            // Save the document with the watermark
            FileOutputStream outputStream = new FileOutputStream("sample_with_watermark.docx");
            doc.write(outputStream);
            outputStream.close();
            inputStream.close();

            System.out.println("Watermark added successfully!");
        } catch (Exception e) {
            System.out.println("Error adding watermark: " + e.getMessage());
        }
    }
}

Note that this code uses the Apache POI library to manipulate the Word document. You'll need to include the POI jar files in your project classpath in order to use this code.