Java poi给word添加水印，字体，颜色，倾斜度等

之前使用poi-tl进行word模板生成word生成文件word之后，现在需给出需求word添加水印功能，先贴图生成后的效果，部分内容涉及公司信息打马赛克，

贴一下代码

  /**  * @author qiankun.hu  * @version 1.0.0  * @createTime 2022年05月30日 13:57:00  * @Description 给word添加水印  */ @Slf4j @Service public class WordWaterMarkServiceImpl implements WaterMarkService {       private final static String DEFAULT_WATERMARK = "XXX科技有限公司";     private final static String DEFAULT_FONT_COLOR = "#d8d8d8";      // 字体大小     private static final String FONT_SIZE = "0.5pt";     // 文本旋转角度     private static final String STYLE_ROTATION = "-30";      /**      * 添加水印 临时路径返回文件      * @param is      * @param waterMarkInfo      * @param tempFileDirPath      * @return      */     @Override     public String writeWithWaterMark(InputStream is, TextWaterMark waterMarkInfo, String tempFileDirPath) {         if (is == null) {             throw new BusinessException(new ErrorInfo("-1", "文件为空"));         }         File tempFileDir = new File(tempFileDirPath);         if (!tempFileDir.exists()) {             log.info("目录不存在，创建文件夹{}", tempFileDirPath);             tempFileDir.mkdirs();         }         //设置默认值         String watermark = StringUtils.isBlank(waterMarkInfo.getText()) ? DEFAULT_WATERMARK : waterMarkInfo.getText();         String color = StringUtils.isBlank(waterMarkInfo.getFontColor()) ? DEFAULT_FONT_COLOR : "#"   waterMarkInfo.getFontColor();         String fontSize = (null == waterMarkInfo.getFontSize()) ? FONT_SIZE : waterMarkInfo.getFontSize()   "pt";         String rotation = (null == waterMarkInfo.getRotation()) ? STYLE_ROTATION : "-"   waterMarkInfo.getRotation();         //检查水印信息 去掉也行，暂时没有使用内部参数         checkTextParam(waterMarkInfo);         XWPFDocument doc = null;          try {             doc = new XWPFDocument(is);             addWaterMark(doc, watermark, color, fontSize, rotation);             String filePath = tempFileDirPath   File.separator  System.currentTimeMillis()   ".docx";             OutputStream os = new FileOutputStream(filePath);             doc.write(os);             return filePath;         } catch (IOException e) {             log.error("water mark word error: {}", e);             throw new BusinessException(new ErrorInfo("-1", "添加异常水印的文件"));         } finally {             if (doc != null) {                 try {                     doc.close();                 } catch (IOException e) {                     log.error("water mark word close error: {}", e);                 }             }         }     }      /**      * 添加水印信息      * @param obj      * @param watermark      * @param color      * @param fontSize      * @param rotation      */     private void addWaterMark(Object obj, String watermark, String color, String fontSize, String rotation) {         if (obj instanceof XWPFDocument) {             XWPFDocument doc = (XWPFDocument) obj;             DocxUtil.makeFullWaterMarkByWordArt(doc, watermark, color, fontSize, rotation);         }     }   } 

service的代码

/**  * @author qiankun.hu  * @version 1.0.0  * @createTime 2022年05月30日 13:51:00  * @Description TODO  */ public interface WaterMarkService {      int DEFAULT_HORIZONTAL = 150;     int DEFAULT_VERTICAL = 150;     int DEFAULT_ROTATION = 30;     int DEFAULT_FONT_SIZE = 50;     float DEFAULT_ALPHA = 0.5f;     String DEFAULT_COLOR = "d8d8d8";     String COLOR_REGEX = "^([0-9a-fA-F]{6})$";      /**      *      * @param is      * @param waterMarkInfo      * @param tempFileDirPath      * @return      */     String writeWithWaterMark(InputStream is, TextWaterMarkDto waterMarkInfo, String tempFileDirPath);      /**      * 可以去掉，没用到      */     default void checkTextParam(TextWaterMarkDto waterMark) {         if (waterMark != null) {              if (StringUtils.isBlank(waterMark.getText())) {                 throw new BusinessException(ErrorCodeEnum.PARAM_NULL.toErrorInfos(Placeholder.PARAM_WATER_TEXT.getCode()));             }             if (waterMark.getIntervalHorizontal() == null) {                 waterMark.setIntervalHorizontal(DEFAULT_HORIZONTAL);             } else if (waterMark.getIntervalHorizontal() < 0) {                 throw new BusinessException(ErrorCodeEnum.PARAM_WATER_MARK_ERR.toErrorInfos(Placeholder.IntervalHorizontal.getCode(), " > 0"));             }             if (waterMark.getIntervalVertical() == null) {                 waterMark.setIntervalVertical(DEFAULT_VERTICAL);             } else if (waterMark.getIntervalVertical() < 0) {                 throw new BusinessException(ErrorCodeEnum.PARAM_WATER_MARK_ERR.toErrorInfos(Placeholder.IntervalVertical.getCode(), " > 0"));             }             if (waterMark.getFontSize() == null) {                waterMark.setFontSize(DEFAULT_FONT_SIZE);
            } else if (waterMark.getFontSize() < 0) {
                throw new BusinessException(ErrorCodeEnum.PARAM_WATER_MARK_ERR.toErrorInfos(Placeholder.FontSize.getCode(), "> 0"));
            }
            if (waterMark.getRotation() == null) {
                waterMark.setRotation(DEFAULT_ROTATION);
            } else if (waterMark.getRotation() > 90 || waterMark.getRotation() < 0) {
                throw new BusinessException(ErrorCodeEnum.PARAM_WATER_MARK_ERR.toErrorInfos(Placeholder.Rotation.getCode(), "0-90"));
            }
            if (waterMark.getAlpha() == null) {
                waterMark.setAlpha(DEFAULT_ALPHA);
            } else if (waterMark.getAlpha() > 1 || waterMark.getAlpha() < 0) {
                throw new BusinessException(ErrorCodeEnum.PARAM_WATER_MARK_ERR.toErrorInfos(Placeholder.Alpha.getCode(), "0-1"));
            }
            if (StringUtils.isBlank(waterMark.getFontColor())) {
                waterMark.setFontColor(DEFAULT_COLOR);
            } else {
                Pattern p = Pattern.compile(COLOR_REGEX);
                Matcher m = p.matcher(waterMark.getFontColor());
                if (m.matches()) {
                    waterMark.setFontColor(m.group(1));
                } else {
                    throw new BusinessException(ErrorCodeEnum.PARAM_WATER_MARK_ERR.toErrorInfos(Placeholder.FontColor.getCode(), "000000 - FFFFFF"));
                }
            }
        }
    }

}

单元测试测一下，完美输出

    @Test
    public void tempExport() throws Exception{
        String path ="C:\\Users\\qiankun.hu\\AppData\\Local\\Temp\eTemp-1653899322026";
        String name ="/1653899360909.docx";
        String modelPath = path+name;//设置需要加水印的文件路径
        //输入的docx文档
        InputStream in = new FileInputStream(new File(modelPath));

        TextWaterMarkDto waterMarkInfo = new TextWaterMarkDto();
        waterMarkInfo.setText("hello");
        waterMarkService.writeWithWaterMark(in,waterMarkInfo, path);

    }

工具类的代码贴一下

import com.microsoft.schemas.office.office.CTLock;
import com.microsoft.schemas.vml.*;
import org.apache.poi.wp.usermodel.HeaderFooterType;
import org.apache.poi.xwpf.model.XWPFHeaderFooterPolicy;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFHeader;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.*;

import java.io.InputStream;
import java.util.stream.Stream;

/**
 * @author qiankun.hu
 * @version 1.0.0
 * @createTime 2022年05月30日 13:57:00
 * @Description word水印工具
 */
public class DocxUtil {
    /**
     * 水印参数
     */
   // private static final String fontColor = "#D3D3D3"; // 字体颜色

    /**
     * 艺术字水印参数
     */
    private static final String fontName = "PingFang SC"; // word字体
   // private static final String fontSize = "0.5pt"; // 字体大小
    private static final int widthPerWord = 10; // 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 String styleRotation = "-45"; // 文本旋转角度


    /**
     * word文字水印(调用poi封装的createWatermark方法)
     * @param doc XWPFDocument对象
     * @param markStr 水印文字
     */
    public static void setWordWaterMark(XWPFDocument doc, String markStr,String fontColor) {
        XWPFParagraph paragraph = doc.createParagraph();
        XWPFHeaderFooterPolicy headerFooterPolicy = doc.getHeaderFooterPolicy();
        if (headerFooterPolicy == null) {
            headerFooterPolicy = doc.createHeaderFooterPolicy();
        }
        // create default Watermark - fill color black and not rotated
        headerFooterPolicy.createWatermark(markStr);
        // 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
        paragraph.getCTP().newCursor();
        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) {
            CTShape ctshape = (CTShape) xmlobjects[0];
            ctshape.setFillcolor(fontColor);
            ctshape.setStyle(ctshape.getStyle() + ";rotation:315");
        }
    }

    /**
     * 以艺术字方式加上水印(平铺)
     * @param docx XWPFDocument对象
     * @param customText 水印文字
     */
    public static void makeFullWaterMarkByWordArt(XWPFDocument docx, String customText,String fontColor,String fontSize,String styleRotation) {
        customText = customText + repeatString(" ", 16); // 水印文字之间使用8个空格分隔
        customText = repeatString(customText, 10); // 一行水印重复水印文字次数
        String styleTop = "0pt";  // 与顶部的间距

        if (docx == null) {
            return;
        }
        // 遍历文档，添加水印
        for (int lineIndex = -10; lineIndex < 20; lineIndex++) {
            styleTop = 200 * lineIndex + "pt";
            waterMarkDocXDocument(docx, customText, styleTop, 1,fontColor, fontSize ,styleRotation);
        }
    }

    /**
     * 以艺术字方式加上水印(单个)
     * @param docx XWPFDocument对象
     * @param customText 水印文字
     */
    public static void makeWaterMarkByWordArt(XWPFDocument docx, String customText,String fontColor,String fontSize,String rotation) {
        String styleTop = "0pt";  // 与顶部的间距

        if (docx == null) {
            return;
        }
        // 添加水印
        waterMarkDocXDocument(docx, customText, styleTop, 2,fontColor,fontSize,rotation);
    }

    /**
     * 将指定的字符串重复repeats次.
     * @param pattern 字符串
     * @param repeats 重复次数
     * @return 生成的字符串
     */
    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);
    }

    /**
     * 为文档添加水印
     * 实现参考了{@link XWPFHeaderFooterPolicy#(String, int)}
     * @param doc 需要被处理的docx文档对象
     * @param customText 水印文本
     * @param type 类型：1.平铺；2.单个
     */
    private static void waterMarkDocXDocument(XWPFDocument doc, String customText, String styleTop, int type,String fontColor,String fontSize,String rotation) {
        XWPFHeader header = doc.createHeader(HeaderFooterType.DEFAULT); // 如果之前已经创建过 DEFAULT 的Header，将会复用之
        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();
        CTRPr ctrpr = ctr.addNewRPr();
        ctrpr.addNewNoProof();
        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.VIEW);
        CTShape shape = group.addNewShape();
        shape.setId("PowerPlusWaterMarkObject");
        shape.setSpid("_x0000_s102");
        shape.setType("#_x0000_t136");
        if(type != 2){
            shape.setStyle(getShapeStyle(customText, styleTop,rotation)); // 设置形状样式（旋转，位置，相对路径等参数）
        }else{
            shape.setStyle(getShapeStyle()); // 设置形状样式（旋转，位置，相对路径等参数）
        }
        shape.setFillcolor(fontColor);
        shape.setStroked(STTrueFalse.FALSE); // 字体设置为实心
        CTTextPath shapeTextPath = shape.addNewTextpath(); // 绘制文本的路径
        shapeTextPath.setStyle("font-family:" + fontName + ";font-size:" + fontSize); // 设置文本字体与大小
        shapeTextPath.setString(customText);
        CTPicture pict = ctr.addNewPict();
        pict.set(group);
    }

    /**
     * 加载docx格式的word文档
     * @param inputStream
     * @return
     */
    private static XWPFDocument loadDocXDocument(InputStream inputStream) {
        XWPFDocument doc;
        try {
            doc = new XWPFDocument(inputStream);
        } catch (Exception e) {
            throw new RuntimeException("文档加载失败！！");
        }
        return doc;
    }

    /**
     * 构建Shape的样式参数
     * @param customText 水印文本
     * @return
     */
    private static String getShapeStyle(String customText, String styleTop,String styleRotation) {
        StringBuilder sb = new StringBuilder();
        sb.append("position: ").append("absolute"); // 文本path绘制的定位方式
        sb.append(";width: ").append(customText.length() * widthPerWord).append("pt"); // 计算文本占用的长度（文本总个数*单字长度）
        sb.append(";height: ").append("20pt"); // 字体高度
        sb.append(";z-index: ").append("-251654144");
        sb.append(";mso-wrap-edited: ").append("f");
        sb.append(";margin-top: ").append(styleTop);
        sb.append(";mso-position-horizontal-relative: ").append("margin");
        sb.append(";mso-position-vertical-relative: ").append("margin");
        sb.append(";mso-position-vertical: ").append("left");
        sb.append(";mso-position-horizontal: ").append("center");
        sb.append(";rotation: ").append(styleRotation);
        return sb.toString();
    }

    /**
     * 构建Shape的样式参数
     * @return
     */
    private static String getShapeStyle() {
        StringBuilder sb = new StringBuilder();
        sb.append("position: ").append("absolute"); // 文本path绘制的定位方式
        sb.append(";left: ").append("opt");
        sb.append(";width: ").append("500pt"); // 计算文本占用的长度（文本总个数*单字长度）
        sb.append(";height: ").append("150pt"); // 字体高度
        sb.append(";z-index: ").append("-251654144");
        sb.append(";mso-wrap-edited: ").append("f");
        sb.append(";margin-left: ").append("-50pt");
        sb.append(";margin-top: ").append("270pt");
        sb.append(";mso-position-horizontal-relative: ").append("margin");
        sb.append(";mso-position-vertical-relative: ").append("margin");
        sb.append(";mso-width-relative: ").append("page");
        sb.append(";mso-height-relative: ").append("page");
        sb.append(";rotation: ").append("-2949120f");
        return sb.toString();
    }

}