add method

hutool-core/src/main/java/cn/hutool/core/io/file/PathUtil.java

@@ -487,4 +487,17 @@ public class PathUtil {
 	public static boolean isSymlink(Path path) {
 		return Files.isSymbolicLink(path);
 	}
+
+	/**
+	 * 判断文件或目录是否存在
+	 *
+	 * @param path          文件
+	 * @param isFollowLinks 是否跟踪软链（快捷方式）
+	 * @return 是否存在
+	 * @since 5.5.3
+	 */
+	public static boolean exists(Path path, boolean isFollowLinks) {
+		final LinkOption[] options = isFollowLinks ? new LinkOption[0] : new LinkOption[]{LinkOption.NOFOLLOW_LINKS};
+		return Files.exists(path, options);
+	}
 }

hutool-poi/src/main/java/cn/hutool/poi/ofd/OfdWriter.java

@@ -1,13 +1,19 @@
 package cn.hutool.poi.ofd;
 
+import cn.hutool.core.io.IORuntimeException;
 import cn.hutool.core.io.IoUtil;
+import cn.hutool.core.io.file.PathUtil;
 import org.ofdrw.font.Font;
 import org.ofdrw.layout.OFDDoc;
+import org.ofdrw.layout.edit.Annotation;
 import org.ofdrw.layout.element.Div;
+import org.ofdrw.layout.element.Img;
 import org.ofdrw.layout.element.Paragraph;
+import org.ofdrw.reader.OFDReader;
 
 import java.io.Closeable;
 import java.io.File;
+import java.io.IOException;
 import java.io.OutputStream;
 import java.io.Serializable;
 import java.nio.file.Path;
@@ -38,8 +44,16 @@ public class OfdWriter implements Serializable, Closeable {
 	 * @param file 生成的文件
 	 */
 	public OfdWriter(Path file) {
+		try {
+			if(PathUtil.exists(file, true)){
+				this.doc = new OFDDoc(new OFDReader(file), file);
+			} else{
 				this.doc = new OFDDoc(file);
 			}
+		} catch (IOException e) {
+			throw new IORuntimeException(e);
+		}
+	}
 
 	/**
 	 * 构造
@@ -68,8 +82,39 @@ public class OfdWriter implements Serializable, Closeable {
 		return add(paragraph);
 	}
 
+	/**
+	 * 追加图片
+	 *
+	 * @param picFile 图片文件
+	 * @param width   宽度
+	 * @param height  高度
+	 * @return this
+	 */
+	public OfdWriter addPicture(File picFile, int width, int height) {
+		return addPicture(picFile.toPath(), width, height);
+	}
+
+	/**
+	 * 追加图片
+	 *
+	 * @param picFile 图片文件
+	 * @param width   宽度
+	 * @param height  高度
+	 * @return this
+	 */
+	public OfdWriter addPicture(Path picFile, int width, int height) {
+		final Img img;
+		try {
+			img = new Img(width, height, picFile);
+		} catch (IOException e) {
+			throw new IORuntimeException(e);
+		}
+		return add(img);
+	}
+
 	/**
 	 * 增加节点，
+	 *
 	 * @param div 节点，可以是段落、Canvas、Img或者填充
 	 * @return this
 	 */
@@ -78,6 +123,21 @@ public class OfdWriter implements Serializable, Closeable {
 		return this;
 	}
 
+	/**
+	 * 增加节点，
+	 *
+	 * @param annotation 节点，可以是段落、Canvas、Img或者填充
+	 * @return this
+	 */
+	public OfdWriter add(int page, Annotation annotation) {
+		try {
+			this.doc.addAnnotation(page, annotation);
+		} catch (IOException e) {
+			throw new IORuntimeException(e);
+		}
+		return this;
+	}
+
 	@Override
 	public void close() {
 		IoUtil.close(this.doc);