问题
I tried to render ⇒ ⇔ € © → in the HTML with the XMLWorker and iText. Only the copyright and euro symbol appear in the PDF. I used the dafault font and Arial but without success.
Is there a way to get those entities rendered? Is there an alterantive way to render arrows in text?
回答1:
As you can see in the ParseHtml3 example, it works for me:
This is my code to create the PDF:
public void createPdf(String file) throws IOException, DocumentException {
// step 1
Document document = new Document();
// step 2
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file));
// step 3
document.open();
// step 4
String str = "<html><head></head><body style=\"font-size:12.0pt; font-family:Arial\">"+
"<p>Special symbols: ← ↓ ↔ ↑ → € ©</p>" +
"</body></html>";
XMLWorkerHelper worker = XMLWorkerHelper.getInstance();
InputStream is = new ByteArrayInputStream(str.getBytes());
worker.parseXHtml(writer, document, is);
// step 5
document.close();
}
Note that all entities are written in lower-case.
来源：https://stackoverflow.com/questions/29121766/certain-html-entities-arrows-are-not-rendered-in-pdf-itext