Java Word添加水印代码示例 （代码可直接运行）

package com.hsl.watermark.util; import com.microsoft.schemas.office.office.CTLock; import com.microsoft.schemas.vml.*; import lombok.extern.slf4j.Slf4j; import org.apache.poi.openxml4j.opc.OPCPackage; import org.apache.poi.wp.usermodel.HeaderFooterType; import org.apache.poi.xwpf.usermodel.XWPFDocument; import org.apache.poi.xwpf.usermodel.XWPFHeader; import org.openxmlformats.schemas.officeDocument.x2006.sharedTypes.STTrueFalse; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTP; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTPPr; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTPicture; import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTR; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import java.util.stream.Stream; /** * @description: word文档添加水印，支持一行多个，一页多行的效果，而非一页只有一个水印的效果 * @author: slhe * @version: 1.0 * @date: 2024/8/23 下午1:43 * @Copyright: http://www.powersi.com 2024 创智和宇 */ @Slf4j public class WaterMarkUtil { /** word字体 */ private static final String FONT_NAME = "宋体"; /** 字体大小 */ private static final String FONT_SIZE = "0.3pt"; /** 字体颜色 */ private static final String FONT_COLOR = "#C0C0C0"; /** 一个字平均长度，单位pt，用于：计算文本占用的长度（文本总个数*单字长度）*/ private static final Integer WIDTH_PER_WORD = 10; /** 文本旋转角度 */ private static final String STYLE_ROTATION = "30"; public static void waterMarkDocXDocument(String inPutPath, String putPutPath, String fingerText) { long beginTime = System.currentTimeMillis(); try ( OutputStream out = new FileOutputStream(putPutPath); InputStream in = new FileInputStream(inPutPath); OPCPackage srcPackage = OPCPackage.open(in); XWPFDocument doc = new XWPFDocument(srcPackage) ) { // 把整页都打上水印 int i = 0, marginTop; for (int lineIndex = -1; lineIndex < 6; lineIndex++) { marginTop = 300 * lineIndex; waterMarkDocXDocument(doc, fingerText, i, marginTop); i++; } // 输出新文档 doc.write(out); log.info("添加水印成功！一共耗时" + (System.currentTimeMillis() - beginTime) + "毫秒"); } catch (Exception e) { throw new RuntimeException(e); } } private static void waterMarkDocXDocument(XWPFDocument doc, String fingerText, int i, int marginTop) { // 水印文字之间使用8个空格分隔 fingerText = fingerText + repeatString(" ", 8); // 一行水印重复水印文字次数 fingerText = repeatString(fingerText, 5); // 如果之前已经创建过 DEFAULT 的Header，将会复用 XWPFHeader header = doc.createHeader(HeaderFooterType.DEFAULT); int size = header.getParagraphs().size(); if (size == 0) { header.createParagraph(); } CTP ctp = header.getParagraphArray(0).getCTP(); byte[] rsidr = doc.getDocument().getBody().getPArray(0).getRsidR(); byte[] rsidrDefault = doc.getDocument().getBody().getPArray(0).getRsidRDefault(); ctp.setRsidP(rsidr); ctp.setRsidRDefault(rsidrDefault); CTPPr ppr = ctp.addNewPPr(); ppr.addNewPStyle().setVal("Header"); // 开始加水印 CTR ctr = ctp.addNewR(); CTGroup group = CTGroup.Factory.newInstance(); CTShapetype shapeType = group.addNewShapetype(); CTTextPath shapeTypeTextPath = shapeType.addNewTextpath(); shapeTypeTextPath.setOn(STTrueFalse.T); shapeTypeTextPath.setFitshape(STTrueFalse.T); CTLock lock = shapeType.addNewLock(); lock.setExt(STExt.EDIT); CTShape shape = group.addNewShape(); shape.setId("PowerPlusWaterMarkObject" + (i+1)); shape.setSpid("_x0000_s206" + +(i+1)); shape.setSpt(136f); shape.setType("#_x0000_t136"); // 设置形状样式（旋转，位置，相对路径等参数） shape.setStyle(getShapeStyle(fingerText, i, marginTop)); shape.setFillcolor(FONT_COLOR); shape.setFilled(STTrueFalse.T); shape.setCoordsize("21600,21600"); shape.setAdj("10800"); // 字体设置为实心 shape.setStroked(STTrueFalse.FALSE); // 绘制文本的路径 // 设置文本字体与大小 CTTextPath shapeTextPath = shape.addNewTextpath(); shapeTextPath.setStyle("font-family:" + FONT_NAME + ";font-size:" + FONT_SIZE); shapeTextPath.setString(fingerText); CTPicture pict = ctr.addNewPict(); pict.set(group); } private static String getShapeStyle(String fingerText, int i, int marginTop) { StringBuilder sb = new StringBuilder(); // 文本path绘制的定位方式 sb.append("position: ").append("absolute"); // 计算文本占用的长度（文本总个数*单字长度） sb.append(";width: ").append(fingerText.length() * WIDTH_PER_WORD).append("pt"); // 字体高度 sb.append(";height: ").append("20pt"); sb.append(";z-index: ").append(-251645952 + i); sb.append(";mso-wrap-edited: ").append("f"); // 设置水印的间隔，这是一个大坑，不能用top,必须要margin-top。 sb.append(";margin-top: ").append(marginTop); sb.append(";mso-position-horizontal-relative: ").append("page"); sb.append(";mso-position-vertical-relative: ").append("page"); sb.append(";mso-position-vertical: ").append("left"); sb.append(";mso-position-horizontal: ").append("center"); sb.append(";rotation: ").append(STYLE_ROTATION); return sb.toString(); } private static String repeatString(String pattern, int repeats) { StringBuilder buffer = new StringBuilder(pattern.length() * repeats); Stream.generate(() -> pattern).limit(repeats).forEach(buffer::append); return new String(buffer); } public static void main(String[] arg0){ String inputFilePath = "D:\\doctest\\自定义查询操作手册V1.4.docx"; String outputFilePath = "D:\\doctest\\output.docx"; String fingerText = "创智和宇授权-严禁复制"; WaterMarkUtil.waterMarkDocXDocument(inputFilePath, outputFilePath, fingerText); } }