使用Apache POI在word文档中添加水印

Answer 1

私有的XWPFPagaingetWaterMarkPagain(String text，int idx）直到现在才完成。您可以等待它准备好，或者在创建默认值之后使用低级对象来操作它。

需要的设置在CTShape中。

示例：

import java.io.*;

import org.apache.poi.xwpf.usermodel.*;

import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy;

public class CreateWordHeaderFooterWatermark {

 public static void main(String[] args) throws Exception {

  XWPFDocument doc= new XWPFDocument();

  // the body content
  XWPFParagraph paragraph = doc.createParagraph();
  XWPFRun run=paragraph.createRun();  
  run.setText("The Body:");

  // create header-footer
  XWPFHeaderFooterPolicy headerFooterPolicy = doc.getHeaderFooterPolicy();
  if (headerFooterPolicy == null) headerFooterPolicy = doc.createHeaderFooterPolicy();

  // create default Watermark - fill color black and not rotated
  headerFooterPolicy.createWatermark("Watermark");

  // get the default header
  // Note: createWatermark also sets FIRST and EVEN headers 
  // but this code does not updating those other headers
  XWPFHeader header = headerFooterPolicy.getHeader(XWPFHeaderFooterPolicy.DEFAULT);
  paragraph = header.getParagraphArray(0);

  // get com.microsoft.schemas.vml.CTShape where fill color and rotation is set
  org.apache.xmlbeans.XmlObject[] xmlobjects = paragraph.getCTP().getRArray(0).getPictArray(0).selectChildren(
    new javax.xml.namespace.QName("urn:schemas-microsoft-com:vml", "shape"));

  if (xmlobjects.length > 0) {
   com.microsoft.schemas.vml.CTShape ctshape = (com.microsoft.schemas.vml.CTShape)xmlobjects[0];
   // set fill color
   ctshape.setFillcolor("#d8d8d8");
   // set rotation
   ctshape.setStyle(ctshape.getStyle() + ";rotation:315");
   //System.out.println(ctshape);
  }

  doc.write(new FileOutputStream("CreateWordHeaderFooterWatermark.docx"));
  doc.close();

 }
}