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+package org.springblade.manager.utils;
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+
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+import java.io.File;
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+import java.io.FileInputStream;
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+import java.io.FileOutputStream;
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.Map;
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+
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+import com.itextpdf.text.BaseColor;
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+import com.itextpdf.text.Element;
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+import com.itextpdf.text.Image;
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+import com.itextpdf.text.Rectangle;
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+import com.itextpdf.text.pdf.BaseFont;
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+import com.itextpdf.text.pdf.PdfContentByte;
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+import com.itextpdf.text.pdf.PdfDictionary;
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+import com.itextpdf.text.pdf.PdfName;
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+import com.itextpdf.text.pdf.PdfReader;
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+import com.itextpdf.text.pdf.PdfStamper;
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+import com.itextpdf.text.pdf.parser.ContentByteUtils;
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+import com.itextpdf.text.pdf.parser.ImageRenderInfo;
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+import com.itextpdf.text.pdf.parser.PdfContentStreamProcessor;
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+import com.itextpdf.text.pdf.parser.RenderListener;
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+import com.itextpdf.text.pdf.parser.TextRenderInfo;
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+import org.springblade.common.constant.CommonConstant;
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+import org.springblade.core.tool.utils.Func;
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+import org.springblade.system.cache.ParamCache;
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+
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+public class PdfAddimgUtil {
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+
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+ public static void pdfAddImgInfo(String pdfUrl, String keyword) throws Exception {
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+ String file_path = FileUtils.getSysLocalFileUrl();
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+ String signImg = file_path+"/print/241dc221f83929a87d55ce700d6a4cd7.png";
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+
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+ File pdfFile = new File(pdfUrl);
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+ byte[] pdfData = new byte[(int) pdfFile.length()];
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+ FileInputStream inputStream = null;
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+ try {
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+ inputStream = new FileInputStream(pdfFile);
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+ inputStream.read(pdfData);
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+ } catch (IOException e) {
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+ throw e;
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+ } finally {
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+ if (inputStream != null) {
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+ try {
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+ inputStream.close();
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+ } catch (IOException e) {
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+ }
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+ }
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+ }
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+
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+ //String keyword = "1704373937414078464";
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+
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+ List<float[]> positions = findKeywordPostions(pdfData, keyword);
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+
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+ System.out.println("total:" + positions.size());
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+ if (positions != null && positions.size() > 0) {
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+
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+ for (int i = 0; i < positions.size(); i++) {
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+ float[] position = positions.get(i);
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+ System.out.print("pageNum: " + (int) position[0]);
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+ System.out.print("\tx: " + position[1]);
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+ System.out.println("\ty: " + position[2]);
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+ gaizhang(pdfFile, new File(pdfUrl), (int) position[0], position[1], position[2], signImg);
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+ }
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+ }
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+ }
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+
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+ public static void gaizhang(File src, File dest, int page, float x, float y, String imagePath) throws Exception {
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+ // 读取模板文件
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+ InputStream input = new FileInputStream(src);
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+ PdfReader reader = new PdfReader(input);
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+ PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
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+ Rectangle pageSize = reader.getPageSize(1);
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+ float height = pageSize.getHeight();
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+ float width = pageSize.getWidth();
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+ x = width * x - 20;
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+ y = height - height * y - 8;
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+ // 读图片
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+ Image image = Image.getInstance(imagePath);
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+
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+ // 获取操作的页面
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+ PdfContentByte under = stamper.getOverContent(page);
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+ // 添加图片
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+
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+ // 设置图片的新宽度和高度
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+ float newWidth = 75f; // 新的宽度
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+ float newHeight = image.getScaledHeight() * (newWidth / image.getScaledWidth()); // 根据宽度计算高度
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+ image.scaleAbsolute(newWidth, newHeight); // 设置图片的新尺寸
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+ //调整图片尺寸
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+ image.setAbsolutePosition(x, y);
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+ under.addImage(image);
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+ // 假设的under.addImage方法，需要传入图片路径和大小参数
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+ stamper.close();
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+ reader.close();
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+ }
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+
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+ /**
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+ * 【功能描述：添加图片和文字水印】 【功能详细描述：功能详细描述】
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+ *
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+ * @param srcFile 待加水印文件
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+ * @param destFile 加水印后存放地址
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+ * @param text 加水印的文本内容
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+ * @param textWidth 文字横坐标
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+ * @param textHeight 文字纵坐标
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+ * @throws Exception
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+ */
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+ public void addWaterMark(String srcFile, String destFile, String text,
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+ int textWidth, int textHeight) throws Exception {
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+ // 待加水印的文件
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+ PdfReader reader = new PdfReader(srcFile);
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+ // 加完水印的文件
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+ PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(
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+ destFile));
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+ int total = reader.getNumberOfPages() + 1;
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+ PdfContentByte content;
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+ // 设置字体
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+ BaseFont font = BaseFont.createFont();
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+ // 循环对每页插入水印
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+ for (int i = 1; i < total; i++) {
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+ // 水印的起始
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+ content = stamper.getUnderContent(i);
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+ // 开始
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+ content.beginText();
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+ // 设置颜色 默认为蓝色
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+ content.setColorFill(BaseColor.BLUE);
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+ // content.setColorFill(Color.GRAY);
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+ // 设置字体及字号
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+ content.setFontAndSize(font, 38);
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+ // 设置起始位置
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+ // content.setTextMatrix(400, 880);
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+ content.setTextMatrix(textWidth, textHeight);
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+ // 开始写入水印
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+ content.showTextAligned(Element.ALIGN_LEFT, text, textWidth,
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+ textHeight, 45);
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+ content.endText();
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+ }
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+ stamper.close();
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+ }
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+
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+ /**
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+ * findKeywordPostions
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+ *
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+ * @param pdfData
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+ * @param keyword
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+ * @return List<float [ ]> : float[0]:pageNum float[1]:x float[2]:y
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+ * @throws IOException
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+ */
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+ public static List<float[]> findKeywordPostions(byte[] pdfData,
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+ String keyword) throws IOException {
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+ List<float[]> result = new ArrayList<float[]>();
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+ List<PdfPageContentPositions> pdfPageContentPositions = getPdfContentPostionsList(pdfData);
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+
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+ for (PdfPageContentPositions pdfPageContentPosition : pdfPageContentPositions) {
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+ List<float[]> charPositions = findPositions(keyword,
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+ pdfPageContentPosition);
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+ if (charPositions == null || charPositions.size() < 1) {
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+ continue;
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+ }
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+ result.addAll(charPositions);
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+ }
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+ return result;
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+ }
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+
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+ private static List<PdfPageContentPositions> getPdfContentPostionsList(
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+ byte[] pdfData) throws IOException {
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+ PdfReader reader = new PdfReader(pdfData);
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+
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+ List<PdfPageContentPositions> result = new ArrayList<PdfPageContentPositions>();
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+
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+ int pages = reader.getNumberOfPages();
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+ for (int pageNum = 1; pageNum <= pages; pageNum++) {
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+ float width = reader.getPageSize(pageNum).getWidth();
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+ float height = reader.getPageSize(pageNum).getHeight();
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+
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+ PdfRenderListener pdfRenderListener = new PdfRenderListener(
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+ pageNum, width, height);
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+
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+ // 解析pdf，定位位置
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+ PdfContentStreamProcessor processor = new PdfContentStreamProcessor(
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+ pdfRenderListener);
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+ PdfDictionary pageDic = reader.getPageN(pageNum);
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+ PdfDictionary resourcesDic = pageDic.getAsDict(PdfName.RESOURCES);
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+ try {
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+ processor.processContent(ContentByteUtils
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+ .getContentBytesForPage(reader, pageNum), resourcesDic);
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+ } catch (IOException e) {
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+ reader.close();
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+ throw e;
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+ }
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+
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+ String content = pdfRenderListener.getContent();
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+ List<CharPosition> charPositions = pdfRenderListener
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+ .getcharPositions();
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+
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+ List<float[]> positionsList = new ArrayList<float[]>();
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+ for (CharPosition charPosition : charPositions) {
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+ float[] positions = new float[]{charPosition.getPageNum(),
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+ charPosition.getX(), charPosition.getY()};
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+ positionsList.add(positions);
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+ }
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+
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+ PdfPageContentPositions pdfPageContentPositions = new PdfPageContentPositions();
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+ pdfPageContentPositions.setContent(content);
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+ pdfPageContentPositions.setPostions(positionsList);
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+
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+ result.add(pdfPageContentPositions);
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+ }
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+ reader.close();
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+ return result;
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+ }
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+
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+
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+ private static List<float[]> findPositions(String keyword,
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+ PdfPageContentPositions pdfPageContentPositions) {
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+
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+ List<float[]> result = new ArrayList<float[]>();
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+ String content = pdfPageContentPositions.getContent();
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+ List<float[]> charPositions = pdfPageContentPositions.getPositions();
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+
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+ List<String> strList = Func.toStrList(keyword);
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+ for (String text : strList) {
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+ for (int pos = 0; pos < content.length(); ) {
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+ int positionIndex = content.indexOf(text, pos);
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+ if (positionIndex == -1) {
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+ break;
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+ }
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+ float[] postions = charPositions.get(positionIndex);
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+ result.add(postions);
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+ pos = positionIndex + 1;
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+ }
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+ }
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+
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+
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+ return result;
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+ }
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+
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+
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+ private static class PdfPageContentPositions {
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+ private String content;
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+ private List<float[]> positions;
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+
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+ public String getContent() {
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+ return content;
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+ }
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+
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+ public void setContent(String content) {
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+ this.content = content;
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+ }
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+
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+ public List<float[]> getPositions() {
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+ return positions;
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+ }
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+
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+ public void setPostions(List<float[]> positions) {
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+ this.positions = positions;
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+ }
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+ }
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+
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+ private static class PdfRenderListener implements RenderListener {
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+ private int pageNum;
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+ private float pageWidth;
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+ private float pageHeight;
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+ private StringBuilder contentBuilder = new StringBuilder();
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+ private List<CharPosition> charPositions = new ArrayList<CharPosition>();
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+
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+ public PdfRenderListener(int pageNum, float pageWidth, float pageHeight) {
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+ this.pageNum = pageNum;
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+ this.pageWidth = pageWidth;
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+ this.pageHeight = pageHeight;
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+ }
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+
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+ @Override
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+ public void beginTextBlock() {
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+
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+ }
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+
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+ @Override
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+ public void renderText(TextRenderInfo renderInfo) {
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+ List<TextRenderInfo> characterRenderInfos = renderInfo
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+ .getCharacterRenderInfos();
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+ for (TextRenderInfo textRenderInfo : characterRenderInfos) {
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+ String word = textRenderInfo.getText();
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+ if (word.length() > 1) {
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+ word = word.substring(word.length() - 1, word.length());
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+ }
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+ com.itextpdf.awt.geom.Rectangle2D.Float rectangle = textRenderInfo.getAscentLine()
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+ .getBoundingRectange();
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+ double x = rectangle.getMinX();
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+ double y = rectangle.getMaxY();
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+
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+ float xPercent = Math.round(x / pageWidth * 10000) / 10000f;
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+ float yPercent = Math.round((1 - y / pageHeight) * 10000) / 10000f;//
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+
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+ CharPosition charPosition = new CharPosition(pageNum, xPercent,
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+ yPercent);
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+ charPositions.add(charPosition);
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+ contentBuilder.append(word);
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+ }
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+ }
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+
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+ @Override
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+ public void endTextBlock() {
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+
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+ }
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+
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+ @Override
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+ public void renderImage(ImageRenderInfo renderInfo) {
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+
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+ }
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+
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+ public String getContent() {
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+ return contentBuilder.toString();
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+ }
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+
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+ public List<CharPosition> getcharPositions() {
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+ return charPositions;
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+ }
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+ }
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+
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+ private static class CharPosition {
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+ private int pageNum = 0;
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+ private float x = 0;
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+ private float y = 0;
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+
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+ public CharPosition(int pageNum, float x, float y) {
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+ this.pageNum = pageNum;
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+ this.x = x;
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+ this.y = y;
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+ }
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+
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+ public int getPageNum() {
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+ return pageNum;
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+ }
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+
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+ public float getX() {
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+ return x;
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+ }
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+
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+ public float getY() {
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+ return y;
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+ }
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+
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+ @Override
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+ public String toString() {
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+ return "[pageNum=" + this.pageNum + ",x=" + this.x + ",y=" + this.y
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+ + "]";
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+ }
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+ }
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+
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+ public static String getNetUrl(String fileUrl){
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+ String file_path = ParamCache.getValue(CommonConstant.SYS_LOCAL_URL);
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+ String sys_file_net_url = ParamCache.getValue(CommonConstant.SYS_FILE_NET_URL);
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+
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+ String path = sys_file_net_url + fileUrl.replaceAll("//", "/").replaceAll(file_path, "");
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+ return path;
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+ }
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+}
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