com.itextpdf.styledxmlparser.jsoup

Class Jsoup

java.lang.Object

com.itextpdf.styledxmlparser.jsoup.Jsoup

public class Jsoup
extends Object

The core public access point to the jsoup functionality.

Author:

Jonathan Hedley

Method Summary

Modifier and Type	Method and Description
static String	clean(String bodyHtml, String baseUri, Whitelist whitelist) Get safe HTML from untrusted input HTML, by parsing input HTML and filtering it through a white-list of permitted tags and attributes.
static String	clean(String bodyHtml, String baseUri, Whitelist whitelist, Document.OutputSettings outputSettings) Get safe HTML from untrusted input HTML, by parsing input HTML and filtering it through a white-list of permitted tags and attributes.
static String	clean(String bodyHtml, Whitelist whitelist) Get safe HTML from untrusted input HTML, by parsing input HTML and filtering it through a white-list of permitted tags and attributes.
static boolean	isValid(String bodyHtml, Whitelist whitelist) Test if the input HTML has only tags and attributes allowed by the Whitelist.
static Document	parse(File in, String charsetName) Parse the contents of a file as HTML.
static Document	parse(File in, String charsetName, String baseUri) Parse the contents of a file as HTML.
static Document	parse(InputStream in, String charsetName, String baseUri) Read an input stream, and parse it to a Document.
static Document	parse(InputStream in, String charsetName, String baseUri, Parser parser) Read an input stream, and parse it to a Document.
static Document	parse(String html) Parse HTML into a Document.
static Document	parse(String html, String baseUri) Parse HTML into a Document.
static Document	parse(String html, String baseUri, Parser parser) Parse HTML into a Document, using the provided Parser.
static Document	parseBodyFragment(String bodyHtml) Parse a fragment of HTML, with the assumption that it forms the body of the HTML.
static Document	parseBodyFragment(String bodyHtml, String baseUri) Parse a fragment of HTML, with the assumption that it forms the body of the HTML.
static Document	parseXML(InputStream in, String charsetName) Parse XML into a Document.
static Document	parseXML(InputStream in, String charsetName, String baseUri) Parse XML into a Document.
static Document	parseXML(String xml) Parse XML into a Document.
static Document	parseXML(String xml, String baseUri) Parse XML into a Document.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

parse

public static Document parse(String html,
                             String baseUri)

Parse HTML into a Document. The parser will make a sensible, balanced document tree out of any HTML.

Parameters:

html - HTML to parse

baseUri - The URL where the HTML was retrieved from. Used to resolve relative URLs to absolute URLs, that occur before the HTML declares a <base href> tag.

Returns:

sane HTML

parse

public static Document parse(String html,
                             String baseUri,
                             Parser parser)

Parse HTML into a Document, using the provided Parser. You can provide an alternate parser, such as a simple XML (non-HTML) parser.

Parameters:

html - HTML to parse

baseUri - The URL where the HTML was retrieved from. Used to resolve relative URLs to absolute URLs, that occur before the HTML declares a <base href> tag.

parser - alternate parser to use.

Returns:

sane HTML

parse

public static Document parse(String html)

Parse HTML into a Document. As no base URI is specified, absolute URL detection relies on the HTML including a <base href> tag.

Parameters:

html - HTML to parse

Returns:

sane HTML

See Also:

parse(String, String)

parseXML

public static Document parseXML(String xml,
                                String baseUri)

Parse XML into a Document. The parser will make a sensible, balanced document tree out of any HTML.

Parameters:

xml - XML to parse

baseUri - The URL where the HTML was retrieved from. Used to resolve relative URLs to absolute URLs, that occur before the HTML declares a <base href> tag.

Returns:

sane XML

parseXML

public static Document parseXML(String xml)

Parse XML into a Document. The parser will make a sensible, balanced document tree out of any HTML.

Parameters:

xml - XML to parse

Returns:

sane XML

parseXML

public static Document parseXML(InputStream in,
                                String charsetName,
                                String baseUri)
                         throws IOException

Parse XML into a Document. The parser will make a sensible, balanced document tree out of any HTML.

Parameters:

in - input stream to read. Make sure to close it after parsing.

charsetName - (optional) character set of file contents. Set to null to determine from http-equiv meta tag, if present, or fall back to UTF-8 (which is often safe to do).

baseUri - The URL where the HTML was retrieved from, to resolve relative links against.

Returns:

sane XML

Throws:

IOException - if the file could not be found, or read, or if the charsetName is invalid.

parseXML

public static Document parseXML(InputStream in,
                                String charsetName)
                         throws IOException

Parse XML into a Document. The parser will make a sensible, balanced document tree out of any HTML.

Parameters:

in - input stream to read. Make sure to close it after parsing.

charsetName - (optional) character set of file contents. Set to null to determine from http-equiv meta tag, if present, or fall back to UTF-8 (which is often safe to do).

Returns:

sane XML

Throws:

IOException - if the file could not be found, or read, or if the charsetName is invalid.

parse

public static Document parse(File in,
                             String charsetName,
                             String baseUri)
                      throws IOException

Parse the contents of a file as HTML.

Parameters:

in - file to load HTML from

charsetName - (optional) character set of file contents. Set to null to determine from http-equiv meta tag, if present, or fall back to UTF-8 (which is often safe to do).

baseUri - The URL where the HTML was retrieved from, to resolve relative links against.

Returns:

sane HTML

Throws:

IOException - if the file could not be found, or read, or if the charsetName is invalid.

parse

public static Document parse(File in,
                             String charsetName)
                      throws IOException

Parse the contents of a file as HTML. The location of the file is used as the base URI to qualify relative URLs.

Parameters:

in - file to load HTML from

charsetName - (optional) character set of file contents. Set to null to determine from http-equiv meta tag, if present, or fall back to UTF-8 (which is often safe to do).

Returns:

sane HTML

Throws:

IOException - if the file could not be found, or read, or if the charsetName is invalid.

See Also:

parse(File, String, String)

parse

public static Document parse(InputStream in,
                             String charsetName,
                             String baseUri)
                      throws IOException

Read an input stream, and parse it to a Document.

Parameters:

in - input stream to read. Make sure to close it after parsing.

charsetName - (optional) character set of file contents. Set to null to determine from http-equiv meta tag, if present, or fall back to UTF-8 (which is often safe to do).

baseUri - The URL where the HTML was retrieved from, to resolve relative links against.

Returns:

sane HTML

Throws:

IOException - if the file could not be found, or read, or if the charsetName is invalid.

parse

public static Document parse(InputStream in,
                             String charsetName,
                             String baseUri,
                             Parser parser)
                      throws IOException

Read an input stream, and parse it to a Document. You can provide an alternate parser, such as a simple XML (non-HTML) parser.

Parameters:

in - input stream to read. Make sure to close it after parsing.

charsetName - (optional) character set of file contents. Set to null to determine from http-equiv meta tag, if present, or fall back to UTF-8 (which is often safe to do).

baseUri - The URL where the HTML was retrieved from, to resolve relative links against.

parser - alternate parser to use.

Returns:

sane HTML

Throws:

IOException - if the file could not be found, or read, or if the charsetName is invalid.

parseBodyFragment

public static Document parseBodyFragment(String bodyHtml,
                                         String baseUri)

Parse a fragment of HTML, with the assumption that it forms the body of the HTML.

Parameters:

bodyHtml - body HTML fragment

baseUri - URL to resolve relative URLs against.

Returns:

sane HTML document

See Also:

Document.body()

parseBodyFragment

public static Document parseBodyFragment(String bodyHtml)

Parse a fragment of HTML, with the assumption that it forms the body of the HTML.

Parameters:

bodyHtml - body HTML fragment

Returns:

sane HTML document

See Also:

Document.body()

clean

public static String clean(String bodyHtml,
                           String baseUri,
                           Whitelist whitelist)

Get safe HTML from untrusted input HTML, by parsing input HTML and filtering it through a white-list of permitted tags and attributes.

Parameters:

bodyHtml - input untrusted HTML (body fragment)

baseUri - URL to resolve relative URLs against

whitelist - white-list of permitted HTML elements

Returns:

safe HTML (body fragment)

See Also:

Cleaner.clean(Document)

clean

public static String clean(String bodyHtml,
                           Whitelist whitelist)

Get safe HTML from untrusted input HTML, by parsing input HTML and filtering it through a white-list of permitted tags and attributes.

Parameters:

bodyHtml - input untrusted HTML (body fragment)

whitelist - white-list of permitted HTML elements

Returns:

safe HTML (body fragment)

See Also:

Cleaner.clean(Document)

clean

public static String clean(String bodyHtml,
                           String baseUri,
                           Whitelist whitelist,
                           Document.OutputSettings outputSettings)

Get safe HTML from untrusted input HTML, by parsing input HTML and filtering it through a white-list of permitted tags and attributes.

Parameters:

bodyHtml - input untrusted HTML (body fragment)

baseUri - URL to resolve relative URLs against

whitelist - white-list of permitted HTML elements

outputSettings - document output settings; use to control pretty-printing and entity escape modes

Returns:

safe HTML (body fragment)

See Also:

Cleaner.clean(Document)

isValid

public static boolean isValid(String bodyHtml,
                              Whitelist whitelist)

Test if the input HTML has only tags and attributes allowed by the Whitelist. Useful for form validation. The input HTML should still be run through the cleaner to set up enforced attributes, and to tidy the output.

Parameters:

bodyHtml - HTML to test

whitelist - whitelist to test against

Returns:

true if no tags or attributes were removed; false otherwise

See Also:

clean(String, Whitelist)