Parse a document from a String
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Problem
You have HTML in a Java String, and you want to parse that HTML to get at its contents, or to make sure it's well formed, or to modify it. The String may have come from user input, a file, or from the web.
Solution
Use the static?Jsoup.parse(String html)?method, or?Jsoup.parse(String html, String baseUri)?if the page came from the web, and you want to get at absolute URLs (see [working-with-urls]).
String?html?=?"<html><head><title>First?parse</title></head>"+?"<body><p>Parsed?HTML?into?a?doc.</p></body></html>"; Document?doc?=?Jsoup.parse(html);Description
The?parse(String html, String baseUri)?method parses the input HTML into a newDocument. The?base URI?argument is used to resolve relative URLs into absolute URLs, and should be set to the URL where the document was fetched from. If that's not applicable, or if you know the HTML has a?base?element, you can use the?parse(String html)?method.
As long as you pass in a non-null string, you're guaranteed to have a successful, sensible parse, with a Document containing (at least) a?head?and a?body?element. (BETA: if you do get an exception raised, or a bad parse-tree, please?file a bug.)
Once you have a Document, you can get get at the data using the appropriate methods in Document and its supers?Element?and?Node.
轉載于:https://my.oschina.net/u/553266/blog/296059
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