java將靜態頁面轉為pdf 并在指定位置加上蓋章
直接上代碼
package com.ewaytek.edf.web.modules.test.pdf;

import com.itextpdf.text.pdf.BaseFont;
import org.springframework.web.bind.annotation.*;
import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.OutputStream;

import com.itextpdf.awt.geom.Rectangle2D;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.parser.ImageRenderInfo;
import com.itextpdf.text.pdf.parser.PdfReaderContentParser;
import com.itextpdf.text.pdf.parser.RenderListener;
import com.itextpdf.text.pdf.parser.TextRenderInfo;
import sun.misc.BASE64Decoder;

import javax.servlet.http.HttpServletRequest;
import javax.xml.transform.Result;
import java.io.FileOutputStream;
import java.io.IOException;
/**

• 文件格式轉換工具類

• @author lbj

• 2015-10-8 上午10:52:22
  */
  @RestController
  @RequestMapping("/pdf")
  public class FileTypeConvertUtil {

  /**

  • 將HTML轉成PD格式的文件。html文件的格式比較嚴格

  • @param htmlFile

  • @param pdfFile

  • @throws Exception
    */
    //
    public static void html2pdf(String htmlFile, String pdfFile) throws Exception {
    // step 1
    String url = new File(htmlFile).toURI().toURL().toString();
    System.out.println(url);
    // step 2
    OutputStream os = new FileOutputStream(pdfFile);
    ITextRenderer renderer = new ITextRenderer();
    renderer.setDocument(url);

    // step 3 解決中文支持
    ITextFontResolver fontResolver = renderer.getFontResolver();
    if(“linux”.equals(getCurrentOperatingSystem())){
    fontResolver.addFont("/usr/share/fonts/chiness/simsun.ttc", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
    }else{
    fontResolver.addFont(“c:/Windows/Fonts/simsun.ttc”, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
    }

    renderer.layout();
    renderer.createPDF(os);
    os.close();

    System.out.println(“create pdf done!!”);

  }

  public static String getCurrentOperatingSystem(){
  String os = System.getProperty(“os.name”).toLowerCase();
  System.out.println("---------當前操作系統是-----------" + os);
  return os;
  }

  /**

  • 根據pdf中的關鍵字，獲取文字的絕對位置，并進行簽章

  • @param inputPath 未處理pdf

  • @param targetPath 已簽章pdf地址

  • @param imagePath 簽章圖片地址

  • @param inputPath pdf中的關鍵字

  • @param pageNum pdf頁數,可傳null，默認設置最大頁數

  • @return float的x與y值

  • @throws IOException
    */
    private static void addSignImg(String inputPath, String targetPath, final String imagePath, final String keyWord, Integer pageNum) throws IOException, DocumentException {
    PdfReader pdfReader = new PdfReader(inputPath);
    // 讀圖片
    final Image image = Image.getInstance(imagePath);
    // 根據域的大小縮放圖片
    image.scaleToFit(120, 120);

    if (null == pageNum) {
    pageNum = pdfReader.getNumberOfPages();
    }
    new PdfReaderContentParser(pdfReader).processContent(pageNum, new RenderListener() {
    public void beginTextBlock() {

    }public void renderText(TextRenderInfo textRenderInfo) {String text = textRenderInfo.getText();if (text != null && text.contains(keyWord)) {// 文字在page中的橫坐標、縱坐標Rectangle2D.Float textFloat = textRenderInfo.getBaseline().getBoundingRectange();float x = textFloat.x;float y = textFloat.y;// 設置圖片位置image.setAbsolutePosition(x + 50f, y - 30f);}else{image.setAbsolutePosition( 50f, 30f);}}public void endTextBlock() {}public void renderImage(ImageRenderInfo renderInfo) {}

    });
    // 獲取操作的頁面
    PdfStamper stamper = new PdfStamper(pdfReader, new FileOutputStream(targetPath));
    PdfContentByte under = stamper.getOverContent(pageNum);
    under.addImage(image);
    stamper.close();
    pdfReader.close();
    }

  public static void main(String[] args) {
  // String htmlFile = “/home/lbj/sign.jsp”;
  // String pdfFile = “/home/lbj/sign.pdf”;
  //要轉的靜態頁面
  String htmlFile = “d:/table.html”;
  String pdfFile = “C:\Users\Administrator\Desktop\part1.pdf”;
  try {
  FileTypeConvertUtil.html2pdf(htmlFile, pdfFile);
  String imagePath = “C:\Users\Administrator\Desktop\zhang.png”;
  String targetPath = “C:\Users\Administrator\Desktop\part2.pdf”;
  addSignImg(pdfFile, targetPath, imagePath, “”, null);
  } catch (FileNotFoundException e) {
  e.printStackTrace();
  } catch (Exception e) {
  e.printStackTrace();
  }
  }

  /**

  • 生成PDF文件
  • @author shilun.zhan
  • @date 2018年2月23日 上午10:40:23
  • @param request
  • @param attachments
  • PDFbase64格式的字符串
  • @return
    */
    @RequestMapping(value = “uploadBillClient”, method = RequestMethod.POST)
    @ResponseBody
    public Result uploadBillClient(HttpServletRequest request,
    @RequestParam(value = “fileName”, required = false) String attachments) {
    if (attachments == null) {
    return null;
    }
    BASE64Decoder decoder = new BASE64Decoder();
    try {
    // Base64解碼
    byte[] b = decoder.decodeBuffer(attachments);
    for (int i = 0; i < b.length; ++i) {
    // 調整異常數據
    if (b[i] < 0) {
    b[i] += 256;
    }
    }
    String imgFilePath = “C:\Users\Administrator\Desktop\hello.pdf”;
    OutputStream out = new FileOutputStream(imgFilePath);
    out.write(b);
    out.flush();
    out.close();
    String imagePath = “C:\Users\Administrator\Desktop\zhang.png”;
    String targetPath = “C:\Users\Administrator\Desktop\part2.pdf”;
    addSignImg(imgFilePath, targetPath, imagePath, “”, null);
    } catch (Exception e) {
    e.printStackTrace();
    return null;
    }
    return null;
    }

}

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