OFD添加图片水印

来源：OFD添加图片水印_ofdrw 水印-CSDN博客

通过http://t.csdn.cn/CzmeR这篇文章的引导，写出了一个ofd文件加图片水印的工具类，分享给大家参考。

1、引入ofdrw

<!--junit-->
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>provided</scope>
</dependency>
 
<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.6</version>
    <scope>provided</scope>
</dependency>
 
<!-- ofdrw -->
<dependency>
    <groupId>org.ofdrw</groupId>
    <artifactId>ofdrw-full</artifactId>
    <version>1.6.4</version>
</dependency>

2、工具类编写

import java.nio.file.Path;
import ch.qos.logback.core.net.SyslogOutputStream;
import com.itextpdf.text.BadElementException;
import org.ofdrw.core.annotation.pageannot.AnnotType;
import org.ofdrw.core.basicType.ST_Box;
import org.ofdrw.font.FontName;
import org.ofdrw.layout.OFDDoc;
import org.ofdrw.layout.edit.Annotation;
import org.ofdrw.layout.element.canvas.FontSetting;
import org.ofdrw.reader.OFDReader;
import com.itextpdf.text.Image;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
 
public class OfdUtil {
    /**
     * @param inputFile  输入路径
     * @param outputFile 输出路径
     * @param imgPath    图片路径
     * @param dhzwz      加章位置: 1左上角、0中间、2右上角
     */
    public static String waterMark(String inputFile, String outputFile,String imgPath,String dhzwz) throws IOException, BadElementException {
        Path srcP = Paths.get(inputFile);
        Path outP = Paths.get(outputFile);
        //Image img = null;
 
        Image  img = Image.getInstance(imgPath);
         Path imgPath1 = Paths.get(imgPath);
        try (OFDReader reader = new OFDReader(srcP);
             OFDDoc ofdDoc = new OFDDoc(reader, outP)) {
 
            Double width = ofdDoc.getPageLayout().getWidth();
            Double height = ofdDoc.getPageLayout().getHeight();
            Annotation annotation = new Annotation(new ST_Box(0d, 0d, width, height), AnnotType.Watermark, ctx -> {
                FontSetting setting = new FontSetting(8, FontName.SimSun.font());
 
                ctx.setFillColor(170, 160, 165)
                        .setFont(setting)
                        .setGlobalAlpha(0.4);
 
                // 图片水印
                if(dhzwz.equals("1")) {//左上角
                    ctx.drawImage(imgPath1, 0, 5, img.getWidth()/3.5, img.getHeight()/3.5);
                }else if (dhzwz.equals("0")) {//居中
                    ctx.drawImage(imgPath1, width/2-img.getWidth()/3.5/2, 5, img.getWidth()/3.5, img.getHeight()/3.5);
                }else if (dhzwz.equals("2")) {//右上角
                    ctx.drawImage(imgPath1, width-img.getWidth()/3.5, 5, img.getWidth()/3.5, img.getHeight()/3.5);
                }else {//默认居中
                    ctx.drawImage(imgPath1, width/2-img.getWidth()/3.5/2, 5, img.getWidth()/3.5, img.getHeight()/3.5);
                }
 
 
            });
            int Pages = reader.getNumberOfPages()+1;
            //循环添加图片
            for (int i = 0; i < Pages; i++) {
                ofdDoc.addAnnotation(i, annotation);
            }
        }
        System.out.println("ofd加章新位置：" + outP.toAbsolutePath().toString());
        return outP.toAbsolutePath().toString();
    }
 
    public static void main(String[] args) throws BadElementException, IOException {
      String outP = waterMark("D:/xiazai/txt_1.ofd","D:/xiazai/txt_3.ofd","D:/tomcat-guanshi/apache-tomcat-7.0.86-rizhao/webapps/water/1604043783722.jpg","2");
        System.out.println("main生成文档位置：" +outP);
    }
}

3、效果示例