[英]itext xmlworker with javafx htmleditor
我創建了一個簡單的JavaFX(2.2)FXML項目。 我正在嘗試將html字符串轉換為不同的元素,並將它們添加到iText生成的PDF文檔中的段落中。 由於不推薦使用HTMLWorker,我使用的是XMLWorker。 它似乎與自己編寫的簡單html字符串一起使用,例如:
StringReader in = new StringReader("<html><body><p>test</p></body></html>");
但是,當我嘗試使用JavaFX HTMLEditor控件生成的html字符串時,我收到以下消息:
Caused by: java.lang.NoSuchMethodError: com.itextpdf.tool.xml.html.pdfelement.NoNewLineParagraph.setMultipliedLeading(F)V
at com.itextpdf.tool.xml.html.AbstractTagProcessor.currentContentToParagraph(AbstractTagProcessor.java:268)
at com.itextpdf.tool.xml.html.Span.end(Span.java:77)
at com.itextpdf.tool.xml.html.AbstractTagProcessor.endElement(AbstractTagProcessor.java:192)
at com.itextpdf.tool.xml.pipeline.html.HtmlPipeline.close(HtmlPipeline.java:207)
at com.itextpdf.tool.xml.XMLWorker.endElement(XMLWorker.java:142)
at com.itextpdf.tool.xml.parser.XMLParser.endElement(XMLParser.java:396)
at com.itextpdf.tool.xml.parser.state.ClosingTagState.process(ClosingTagState.java:71)
at com.itextpdf.tool.xml.parser.XMLParser.parseWithReader(XMLParser.java:236)
at com.itextpdf.tool.xml.parser.XMLParser.parse(XMLParser.java:214)
at com.itextpdf.tool.xml.XMLWorkerHelper.parseXHtml(XMLWorkerHelper.java:149)
at hmtltopdf.FXMLDocumentController.handleButtonAction(FXMLDocumentController.java:64)
... 54 more
我的猜測是,HTML工作室無法識別html字符串中的一堆標記。 HTML編輯器創建此html字符串:
<html><head></head><body contenteditable="true"><p style="text-align: left;"><font face="'Segoe UI'">test</font></p></body></html>
如果是這種情況,有沒有辦法'清理'html字符串? 或者我必須使用某種其他HTML編輯器?
我的示例項目代碼:
//using iText 5.3.1 and XMLWorker 5.5.0
@FXML
private HTMLEditor htmlEditor;
@FXML
private void handleButtonAction(ActionEvent event) {
final Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("D:/test/loremipsum.pdf"));
document.open();
//StringReader in = new StringReader("<html><body><p>test</p></body></html>"); //this works
StringReader in = new StringReader(htmlEditor.getHtmlText()); //this does not work
try {
final Paragraph test = new Paragraph();
XMLWorkerHelper.getInstance().parseXHtml(new ElementHandler() {
@Override
public void add(final Writable w) {
if (w instanceof WritableElement) {
List<Element> elements = ((WritableElement) w).elements();
for (Element e : elements) {
test.add(e);
}
}
}
}, in);
document.add(test);
} catch (IOException | DocumentException e) {
System.out.println(e.toString());
System.out.println(e.getMessage());
}
document.close();
}
編輯:
使用<b>
, <i>
,...或其他標簽時似乎問題就出現了。
啊,似乎它必須使用較舊的iText版本做一些事情。 我已更新到iText 5.5.0,它現在似乎正常工作。 我仍然需要刪除任何<br>
和<hr>
標簽。
//using iText 5.5.0 and XMLWorker 5.5.0
@FXML
private HTMLEditor htmlEditor;
@FXML
private void handleButtonAction(ActionEvent event) {
final Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("D:/test/loremipsum.pdf"));
document.open();
String htmlString = htmlEditor.getHtmlText();
htmlString = htmlString.replace("<br>", "");
htmlString = htmlString.replace("<br/>", "");
htmlString = htmlString.replace("<br />", "");
htmlString = htmlString.replace("<hr>", "<p></p>");
htmlString = htmlString.replace("<hr/>", "<p></p>");
htmlString = htmlString.replace("<hr />", "<p></p>");
StringReader in = new StringReader(htmlString);
try {
final Paragraph test = new Paragraph();
XMLWorkerHelper.getInstance().parseXHtml(new ElementHandler() {
@Override
public void add(final Writable w) {
if (w instanceof WritableElement) {
List<Element> elements = ((WritableElement) w).elements();
for (Element e : elements) {
test.add(e);
}
}
}
}, in);
document.add(test);
} catch (IOException | DocumentException e) {
System.out.println(e.toString());
System.out.println(e.getMessage());
}
document.close();
}
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