aspose添加word水印和itextpdf添加pdf水印

项目描述：最近有一个需求是在文件上传的时候，需要添加水印来防伪，防止篡改。网上找了下，发现一个aspose可以实现

aspose添加word水印

jar包在最下面！！！

package com.wlkj.watermark.word;

import com.aspose.words.*;
import com.aspose.words.Shape;

import java.awt.*;

public class WordWatermarkUtil {

    public static void main(String[] args) {
        try {
            Document document = new Document("C:\\Users\\Administrator\\Desktop\\背影.docx");
            WordWatermarkUtil.WaterMarkMore(document,"我的水印");
            //文件输出路径
            document.save("C:\\Users\\Administrator\\Desktop\\背影2.docx");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 为word文档添加水印
     * @param doc word文档模型
     * @param watermarkText 需要添加的水印字段
     * @throws Exception
     */
    public static void insertWatermarkText(Document doc, String watermarkText) throws Exception {
        Shape watermark = new Shape(doc, ShapeType.TEXT_PLAIN_TEXT);
        //水印内容
        watermark.getTextPath().setText(watermarkText);
        //水印字体
        watermark.getTextPath().setFontFamily("宋体");
        //水印宽度
        watermark.setWidth(100);
        //水印高度
        watermark.setHeight(20);
        //旋转水印
        watermark.setRotation(-40);
        //水印颜色 浅灰色
        watermark.getFill().setColor(Color.lightGray);
        watermark.setStrokeColor(Color.lightGray);
        //设置相对水平位置
        watermark.setRelativeHorizontalPosition(RelativeHorizontalPosition.PAGE);
        //设置相对垂直位置
        watermark.setRelativeVerticalPosition(RelativeVerticalPosition.PAGE);
        //设置包装类型
        watermark.setWrapType(WrapType.NONE);
        //设置垂直对齐
        watermark.setVerticalAlignment(VerticalAlignment.CENTER);
        //设置文本水平对齐方式
        watermark.setHorizontalAlignment(HorizontalAlignment.CENTER);
        Paragraph watermarkPara = new Paragraph(doc);
        watermarkPara.appendChild(watermark);
        for (Section sect : doc.getSections())
        {
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_PRIMARY);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_FIRST);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_EVEN);
        }
        System.out.println("Watermark Set");
    }
    /**
     * 在页眉中插入水印
     * @param watermarkPara
     * @param sect
     * @param headerType
     * @throws Exception
     */
    private static void insertWatermarkIntoHeader(Paragraph watermarkPara, Section sect, int headerType) throws Exception{
        HeaderFooter header = sect.getHeadersFooters().getByHeaderFooterType(headerType);
        if (header == null)
        {
            header = new HeaderFooter(sect.getDocument(), headerType);
            sect.getHeadersFooters().add(header);
        }
        header.appendChild(watermarkPara.deepClone(true));
    }

    /**
     * 设置水印属性
     * @param doc
     * @param wmText
     * @param left
     * @param top
     * @return
     * @throws Exception
     */
    public static Shape ShapeMore(Document doc, String wmText, double left, double top)throws Exception{
        Shape waterShape = new Shape(doc, ShapeType.TEXT_PLAIN_TEXT);
        //水印内容
        waterShape.getTextPath().setText(wmText);
        //水印字体
        waterShape.getTextPath().setFontFamily("宋体");
        //水印宽度
        waterShape.setWidth(40);
        //水印高度
        waterShape.setHeight(13);
        //旋转水印
        waterShape.setRotation(-40);
        //水印颜色 浅灰色
        /*waterShape.getFill().setColor(Color.lightGray);
        waterShape.setStrokeColor(Color.lightGray);*/
        waterShape.setStrokeColor(new Color(210,210,210));
        //将水印放置在页面中心
        waterShape.setLeft(left);
        waterShape.setTop(top);
        //设置包装类型
        waterShape.setWrapType(WrapType.NONE);
        return waterShape;
    }

    /**
     * 插入多个水印
     * @param mdoc
     * @param wmText
     * @throws Exception
     */
    public static void WaterMarkMore(Document mdoc, String wmText)throws Exception{
        Paragraph watermarkPara = new Paragraph(mdoc);
        for (int j = 0; j < 500; j = j + 100)
        {
            for (int i = 0; i < 700; i = i + 85)
            {
                Shape waterShape = ShapeMore(mdoc, wmText, j, i);
                watermarkPara.appendChild(waterShape);
            }
        }
        for (Section sect : mdoc.getSections())
        {
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_PRIMARY);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_FIRST);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_EVEN);
        }
    }
}

效果图：

二、itextpdf添加pdf水印

添加maven依赖

        
            com.itextpdf
            itextpdf
            5.5.13
        
        
            com.itextpdf
            itext-asian
            5.2.0
        

package com.wlkj.watermark.pdf;

import com.itextpdf.text.Element;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.*;

import javax.swing.*;
import java.awt.*;
import java.io.FileOutputStream;
import java.io.InputStream;

public class PdfwaterMarkUtil {

	private static int interval = -5;   
	public static void wateMark(InputStream inputStream, String outputFile, String waterMarkName){
		try{
			PdfReader reader = new PdfReader(inputStream);
			PdfStamper stamper = new PdfStamper(reader,new FileOutputStream(outputFile));
			BaseFont base = BaseFont.createFont("STSong-Light","UniGB-UCS2-H",BaseFont.EMBEDDED);
			Rectangle pageRect = null;
			PdfGState gs = new PdfGState();
			gs.setFillOpacity(0.3f);
			gs.setStrokeOpacity(0.4f);
			int total = reader.getNumberOfPages() + 1;
			   
            JLabel label = new JLabel();  
            FontMetrics metrics;  
            int textH = 0;   
            int textW = 0;   
            label.setText(waterMarkName);   
            metrics = label.getFontMetrics(label.getFont());   
            textH = metrics.getHeight();
            textW = metrics.stringWidth(label.getText());  
                
            PdfContentByte under;    
            for (int i = 1; i < total; i++) {   
                pageRect = reader.getPageSizeWithRotation(i);   
                under = stamper.getOverContent(i);   
                under.saveState();  
                under.setGState(gs);  
                under.beginText();    
                under.setFontAndSize(base, 20);
                under.setRGBColorFill(145,145,145);
               
                // 水印文字成30度角倾斜  
                //你可以随心所欲的改你自己想要的角度
                for (int height = interval + textH; height < pageRect.getHeight();  
                        height = height + textH*3) {    
                    for (int width = interval + textW; width < pageRect.getWidth() + textW;   
                            width = width + textW*2) {  
                under.showTextAligned(Element.ALIGN_LEFT  
                        , waterMarkName, width - textW,  
                        height - textH, 30);  
                    }  
                }  
                // 添加水印文字    
                under.endText();    
            }   
            stamper.close();  
            reader.close();

			
		}catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
	}
	public static void main(String[] args) {
		 //wateMark("C:\\Users\\Administrator\\Desktop\\背影.pdf","C:\\Users\\Administrator\\Desktop\\背影2.pdf","我的水印");
	}

}

效果图：

demo地址

链接：https://pan.baidu.com/s/1Q0kyl_J9Hfy_Rx4aK2w_Lw 
提取码：gqh2