解析和遍历文档
To parse a HTML document(解析一个html文档):
String html = "<html><head><title>First parse</title></head>" + "<body><p>Parsed HTML into a doc.</p></body></html>";Document doc = Jsoup.parse(html);
(See parsing a document from a string for more info.)
The parser will make every attempt to create a clean parse from the HTML you provide, regardless of whether the HTML is well-formed or not. It handles(无论html格式是否完整或正确，解析器都会试图建立一个干净的对象或完整的对象):
unclosed tags (如未关闭的标签 )(e.g. <p>Lorem <p>Ipsum parses to <p>Lorem</p> <p>Ipsum</p>)implicit tags (如隐含的标签)(e.g. a naked <td>Table data</td> is wrapped into a <table><tr><td>?)reliably creating the document structure (可靠地创建文档结构)(html containing a head and body, and only appropriate elements within the head (html包含head 和 body,那些只适合在头部的标签))
The object model of a document(一个文档对象模型)
Documents consist of Elements and TextNodes (文档模型中包含很多元素和文字节点)(and a couple of other misc nodes（一些其他的节点）: see the nodes package tree(请看节点包)).
The inheritance chain is(继承连): Document extends Element extends Node(文档继承元素继承节点). TextNode extends Node(文字节点继承节点).
An Element contains a list of children Nodes(一个节点包含许多子节点), and has one parent Element(和有一个父节点). They also have provide a filtered list of child Elements only.
See also
Extracting data: DOM navigation
Extracting data: Selector syntax