I have an HTML document stored in memory (set on a Flying Saucer XHTMLPanel) in my java application.
xhtmlPanel.setDocument(Main.class.getResource("/mailtemplate/DefaultMail.html").toString());
html file below;
<html>
<head>
</head>
<body>
<p id="first"></p>
<p id="second"></p>
</body>
</html>
I want to set the contents of the p elements. I don't want to set a schema for it to use getDocumentById(), so what alternatives do I have?
XHTML is XML, so any XML parser would be my recommendataion. I maintain the JDOM library, so would naturally recommend using that, but other libraries, including the embedded DOM model in Java will work. I would use something like:
Document doc = new SAXBuilder().build(Main.class.getResource("/mailtemplate/DefaultMail.html"));
// XPath that finds the `p` element with id="first"
XPathExpression<Element> xpe = XPathFactory.instance().compile(
"//p[@id='first']", Filters.element());
Element p = xpe.evaluateFirst(doc);
p.setText("This is my text");
XMLOutputter xout = new XMLOutputter(Format.getPrettyFormat());
xout.output(doc, System.out);
Produces the following:
<?xml version="1.0" encoding="UTF-8"?>
<html>
<head />
<body>
<p id="first">This is my text</p>
<p id="second" />
</body>
</html>
use a fine graded Html parser and manipulation library like jsoup. You can easily create a Document by passing the html to jsoup.parse(String htmlContent) function. This library allows all of the DOM manupulation function including CSS or jquery-like selector syntax. doc.selct(String selector), where doc is an instance of Document.
For example you can select the first p using doc.select("p").first(). A minimal working solution would be:
Document doc = jsoup.parse(htmlContent);
Element p = doc.select("p").first();
p.text("My Example Text");
Reference:
来源：https://stackoverflow.com/questions/19730996/edit-html-document-with-java