java将页面转为pdf和pdf上添加盖章

java将静态页面转为pdf 并在指定位置加上盖章
直接上代码
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;
/**

• 文件格式转换工具类

• @author lbj

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

  /**

  • 将HTML转成PD格式的文件。html文件的格式比较严格

  • @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 解决中文支持
    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("---------当前操作系统是-----------" + os);
  return os;
  }

  /**

  • 根据pdf中的关键字，获取文字的绝对位置，并进行签章

  • @param inputPath 未处理pdf

  • @param targetPath 已签章pdf地址

  • @param imagePath 签章图片地址

  • @param inputPath pdf中的关键字

  • @param pageNum pdf页数,可传null，默认设置最大页数

  • @return float的x与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);
    // 读图片
    final Image image = Image.getInstance(imagePath);
    // 根据域的大小缩放图片
    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中的横坐标、纵坐标
             Rectangle2D.Float textFloat = textRenderInfo.getBaseline().getBoundingRectange();
             float x = textFloat.x;
             float y = textFloat.y;
             // 设置图片位置
             image.setAbsolutePosition(x + 50f, y - 30f);
         }else{
             image.setAbsolutePosition( 50f, 30f);
         }
     }
    
     public void endTextBlock() {
    
     }
    
     public void renderImage(ImageRenderInfo renderInfo) {
    
     }
    

    });
    // 获取操作的页面
    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”;
  //要转的静态页面
  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解码
    byte[] b = decoder.decodeBuffer(attachments);
    for (int i = 0; i < b.length; ++i) {
    // 调整异常数据
    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;
    }

}