iText~html转pdf出现异常：com.itextpdf.tool.xml.exceptions.RuntimeWorkerException: Inva
public static void parseHTML2PDFFile(String pdfFile,
String htmlFile) {
     try{
     File htmlfile = new File(htmlFile);
     InputStream htmlFileStream = new FileInputStream(htmlfile);
    
     BaseFont bfCN = BaseFont.createFont("STSongStd-Light", "UniGB-UCS2-H",false);
     // 中文字体定义
     Font chFont = new Font(bfCN, 12, Font.NORMAL, BaseColor.BLUE);
     Font secFont = new Font(bfCN, 12, Font.NORMAL, new BaseColor(0, 204,
     255));
    
     Document document = new Document();

     PdfWriter pdfwriter = PdfWriter.getInstance(document,
     new FileOutputStream(pdfFile));
     pdfwriter.setViewerPreferences(PdfWriter.HideToolbar);
     document.open();
    
     // html文件
     InputStreamReader isr = new InputStreamReader(htmlFileStream, "UTF-8");
    
     //默认参数转换
     XMLWorkerHelper.getInstance().parseXHtml(pdfwriter, document, isr);
    
     document.close();
     }catch (Exception e) {
     e.printStackTrace();
}
}

com.itextpdf.tool.xml.exceptions.RuntimeWorkerException: Invalid nested tag head found, expected closing tag link.
at com.itextpdf.tool.xml.XMLWorker.endElement(XMLWorker.java:134)
at com.itextpdf.tool.xml.parser.XMLParser.endElement(XMLParser.java:393)
at com.itextpdf.tool.xml.parser.state.ClosingTagState.process(ClosingTagState.java:70)
at com.itextpdf.tool.xml.parser.XMLParser.parseWithReader(XMLParser.java:235)
at com.itextpdf.tool.xml.parser.XMLParser.parse(XMLParser.java:213)
at com.itextpdf.tool.xml.XMLWorkerHelper.parseXHtml(XMLWorkerHelper.java:168)
at com.hoosen.webquery.action.WordToHtml.parseHTML2PDFFile(WordToHtml.java:128)
at com.hoosen.webquery.action.WordToHtml.main(WordToHtml.java:156)