带有javafx htmleditor的itext xmlworker
带有javafx htmleditor的itext xmlworker
提问于 2014-04-30 13:51:36
我创建了一个简单的JavaFX (2.2) FXML项目。我试图将html字符串转换为不同的元素，并将它们添加到iText生成的PDF文档中的段落中。由于不推荐HTMLWorker，所以我使用XMLWorker。它看起来确实适用于自己编写的简单html字符串，例如：
StringReader in = new StringReader("<html><body><p>test</p></body></html>");但是，当我尝试使用JavaFX HTMLEditor控件生成的html字符串时，我会收到以下消息：
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我的猜测是，html字符串中有一堆标记是XMLWorker无法识别的。HTML编辑器创建这个html字符串：
<html><head></head><body contenteditable="true"><p style="text-align: left;"><font face="'Segoe UI'">test</font></p></body></html>如果是这样的话，有没有办法“清理”html字符串？还是我必须使用另一种HTML编辑器？
我的示例项目代码：
//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();
}编辑：
当使用<b>，<i>，.或者其他标签。
回答 1
Stack Overflow用户
回答已采纳
发布于 2014-05-05 12:57:03
啊，看来它必须使用一个较旧的iText版本。我已经更新到了iText 5.5.0，现在它似乎起作用了。我仍然必须删除任何<br>和<hr>标签你。
//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();
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/23390011
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