Scala и HTML-синтаксический анализ

Как загрузить документ DOM HTML в Scala? Синтаксис XML имел ошибки при попытке загрузить tags xmlns.

import import import scala.xml._ object NetParse { import{URLConnection, URL} import scala.xml._ def netParse(sUrl: String): Elem = { var url = new URL(sUrl) var connect = url.openConnection XML.load(connect.getInputStream) } } 

Наконец я нашел решение! – Требуется scala 2.7.7 или выше для работы (2.7.0 имеет фатальную ошибку): How-to-use-TagSoup-with-Scala-XML

Это может помочь вам обрабатывать HTML-код реального мира, как если бы он был XML в scala

scala.xml.parsing.XhtmlParser этого попробуйте использовать scala.xml.parsing.XhtmlParser .

Я просто попытался использовать этот ответ с scala 2.8.1 и в итоге использовал работу:

Интересный бит, который мне нужен был:

 val parserFactory = new org.ccil.cowan.tagsoup.jaxp.SAXFactoryImpl val parser = parserFactory.newSAXParser() val source = new org.xml.sax.InputSource("") val adapter = new scala.xml.parsing.NoBindingFactoryAdapter adapter.loadXML(source, parser) 

Scala Scraper

Я рекомендую Scala Scraper, который позволяет вам удобно анализировать HTML следующим образом:

 // Parse elements from files, URLs or plain strings val browser = JsoupBrowser() val doc = browser.parseFile("core/src/test/resources/example.html") val doc2 = browser.get("") val doc3 = browser.parseString("

parse me

") // Extract the text inside the element with id "header" doc >> text("#header") // Extract the elements inside #menu val items = doc >> elementList("#menu span") // From each item, extract all the text inside their elements >> allText("a"))

Примеры взяты из readme Scala Scraper.

 /* Copyright (c) 2008 Florian Hars, BIK Aschpurwis+Behrens GmbH, Hamburg Copyright (c) 2002-2008 EPFL, Lausanne, unless otherwise specified. All rights reserved. This software was developed by the Programming Methods Laboratory of the Swiss Federal Institute of Technology (EPFL), Lausanne, Switzerland. Permission to use, copy, modify, and distribute this software in source or binary form for any purpose with or without fee is hereby granted, provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the EPFL nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package tagsoup import org.xml.sax.InputSource import javax.xml.parsers.SAXParser import org.ccil.cowan.tagsoup.jaxp.SAXFactoryImpl import scala.xml.parsing.FactoryAdapter import scala.xml._ class TagSoupFactoryAdapter extends FactoryAdapter { val parserFactory = new SAXFactoryImpl parserFactory.setNamespaceAware(false) val emptyElements = Set("area", "base", "br", "col", "hr", "img", "input", "link", "meta", "param") /** Tests if an XML element contains text. * @return true if element named localName contains text. */ def nodeContainsText(localName: String) = !(emptyElements contains localName) /** creates a node. */ def createNode(pre:String, label: String, attrs: MetaData, scpe: NamespaceBinding, children: List[Node] ): Elem = { Elem( pre, label, attrs, scpe, children:_* ); } /** creates a text node */ def createText( text:String ) = Text( text ); /** Ignore Processing Instructions */ def createProcInstr(target: String, data: String) = Nil /** load XML document * @param source * @return a new XML document object */ override def loadXML(source: InputSource) = { val parser: SAXParser = parserFactory.newSAXParser() scopeStack.push(TopScope) parser.parse(source, this) scopeStack.pop rootElem } } 

Как в использовании-TagSoup-с-Scala-XML