讲解:http://my.oschina.net/bigyuan/blog/98115
String str = "<p>xxxx <h2><font>hello";
Document doc = Jsoup.parse(str);
System.out.println(doc);
String className = doc.select("title").text();
System.out.println("className:"+className);
String packageName = doc.select("h2 font").text();
System.out.println("packageName:"+packageName);
// 换行
String description = doc.select("p").wrap("<pre></pre>").text();
System.out.println("description:"+description);