java Html Transform PDF

Html Transform PDF

• Use the flying-saucer plugin to do it

• Import flying-saucer dependency

      <dependency>
          <groupId>org.xhtmlrenderer</groupId>
          <artifactId>flying-saucer-pdf</artifactId>
          <version>9.0.8</version>
      </dependency>

• java code implementation

  /**
   * @param inputFile 你的html 路径
   * @param outFile 生成PDF的路径
   * @return 
   */
  public static Boolean HtmlCovertPdf(String inputFile,String outFile){
      FileOutputStream os = null;
      try {
          os = new FileOutputStream(outFile);
          ITextRenderer renderer = new ITextRenderer();
          ITextFontResolver fontResolver = renderer.getFontResolver();
          //处理中文             fontResolver.addFont("simhei.ttf", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
          String url = new File(inputFile).toURI().toURL().toString();
          renderer.setDocument(url);
          renderer.layout();
          renderer.createPDF(os);
          return true;
      } catch (Exception e) {
          e.printStackTrace();
          return false;
      } finally {
          try {
              os.close();
              System.out.println("aa");
          } catch (IOException e) {
              e.printStackTrace();
          }
      }
  }

• Chinese garbled problem: make sure you have the simhei.ttf file under your project, add this line of code

  //这是处理黑体的
  java ontResolver.addFont("simhei.ttf", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
  
  //这是处理宋体的
  fontResolver.addFont("simsun.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

Note: flying-saucer has very strict requirements on Html format, each tag element must end, and the support for css3 is not particularly good.