I have an XML file whose tags are the same.

<regions_list> <region type="continent" name="europe" translate="=Europe" inner_download_suffix="europe" boundary="no" poly_extract="europe"> <!-- north-europe --> <region name="denmark" lang="da" poly_extract="north-europe"/> <region name="estonia" lang="et" poly_extract="north-europe"/> <region name="iceland" lang="is" poly_extract="north-europe"/> <region name="faroe-islands" translate="Faroe Islands;entity=node" lang="fo" poly_extract="north-europe"/> <region name="finland" inner_download_prefix="$name" srtm="no" lang="fi,sv" poly_extract="north-europe"> <region map="no" name="aland" translate="name:fi=Ahvenanmaa;admin_level=3;entity=relation"/> <region type="srtm" name="eastern-finland" translate="Eastern Finland;entity=relation"/> <region name="northern-finland" map="no" srtm="no" hillshade="no" wiki="no" translate="name:en=Northern Finland;entity=relation" boundary="no"> <region type="srtm" name="lapland" translate="Lapland;entity=relation"/> <region type="srtm" name="northern-ostrobothnia" translate="name:en=Northern Ostrobothnia;entity=relation"/> </region> <region type="srtm" name="southern-finland" translate="Southern Finland;entity=relation"/> <region type="srtm" name="western-finland" translate="Western Finland;entity=relation"/> </region> <region name="latvia" lang="lv" poly_extract="north-europe"/> <region name="lithuania" lang="lt" poly_extract="north-europe"/> <region name="norway" srtm="no" inner_download_prefix="$name" lang="nb,nn" poly_extract="north-europe" join_map_files="yes"> <region srtm="yes" hillshade="no" wiki="no" name="akershus"/> <region srtm="yes" hillshade="no" wiki="no" name="astfold" translate="Østfold;entity=node"/> <region srtm="yes" hillshade="no" wiki="no" name="aust-agder"/> <region srtm="yes" hillshade="no" wiki="no" name="buskerud"/> <region srtm="yes" hillshade="no" wiki="no" name="finnmark"/> <region srtm="yes" hillshade="no" wiki="no" name="hedmark"/> <region srtm="yes" hillshade="no" wiki="no" name="hordaland"/> <region srtm="yes" hillshade="no" wiki="no" name="more-og-romsdal" translate="Møre og Romsdal;entity=node"/> <region srtm="yes" hillshade="no" wiki="no" name="nordland"/> <region srtm="yes" hillshade="no" wiki="no" name="nord-trondelag" translate="Nord-Trøndelag;entity=node"/> <region srtm="yes" hillshade="no" wiki="no" name="oppland"/> <region srtm="yes" hillshade="no" wiki="no" name="oslo"/> <region srtm="yes" hillshade="no" wiki="no" name="rogaland"/> <region srtm="yes" hillshade="no" wiki="no" name="sogn-og-fjordane" translate="Sogn og Fjordane;entity=node"/> <region srtm="yes" hillshade="no" wiki="no" name="sor-trondelag" translate="Sør-Trøndelag;entity=node"/> <region srtm="yes" hillshade="no" wiki="no" name="telemark"/> <region srtm="yes" hillshade="no" wiki="no" name="troms"/> <region srtm="yes" hillshade="no" wiki="no" name="vest-agder"/> <region srtm="yes" hillshade="no" wiki="no" name="vestfold"/> <region name="svalbard-and-jan-mayen" translate="Svalbard;entity=relation"/> </region> <region name="sweden" inner_download_prefix="$name" srtm="no" lang="sv" poly_extract="north-europe"> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="blekinge" translate="Blekinge län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="dalarna" translate="Dalecarlia;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="gavleborg" translate="Gävleborgs län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="gotland" translate="Gotlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="halland" translate="Hallands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="jamtland" translate="Jämtlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="jonkoping" translate="Jönköpings län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="kalmar" translate="Kalmar län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="kronoberg" translate="Kronobergs län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="norrbotten" translate="Norrbottens län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="orebro" translate="Örebro län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="ostergotland" translate="Östergötlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="skane" translate="Skåne län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="sodermanland" translate="Södermanlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="stockholm" translate="Stockholms län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="uppsala" translate="Uppsala län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="varmland" translate="Värmlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="vasterbotten" translate="Västerbottens län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="vasternorrland" translate="Västernorrlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="vastmanland" translate="Västmanlands län;entity=relation"/> <region map="yes" srtm="yes" hillshade="no" wiki="no" name="vastra-gotaland" translate="Västra Götalands län;entity=relation"/> </region> <!-- east-europe --> <region name="belarus" lang="be,ru" poly_extract="east-europe"/> <region name="bulgaria" lang="bg" poly_extract="east-europe"/> <region name="czech-republic" inner_download_prefix="$name" translate="Czech Republic;entity=node" lang="cs,sk" poly_extract="east-europe" join_map_files="yes"> <region name="jihovychod" srtm="no" hillshade="no" wiki="no" translate="name:en=Southeast;ref=CZ06;entity=relation"/> <region name="jihozapad" srtm="no" hillshade="no" wiki="no" translate="name:en=Southwest;ref=CZ03;entity=relation"/> <region name="moravskoslezsko" srtm="no" hillshade="no" wiki="no" translate="name:en=Moravia-Silesia;entity=relation"/> <region name="praha" srtm="no" hillshade="no" wiki="no" translate="name:en=Prague;entity=relation"/> <region name="severovychod" srtm="no" hillshade="no" wiki="no" translate="name:en=Northeast;ref=CZ05;entity=relation"/> <region name="severozapad" srtm="no" hillshade="no" wiki="no" translate="name:en=Northwest;ref=CZ04;entity=relation"/> <region name="stredni-cechy" srtm="no" hillshade="no" wiki="no" translate="name:en=Central Bohemia;entity=relation"/> <region name="stredni-morava" srtm="no" hillshade="no" wiki="no" translate="name:en=Central Moravia;entity=relation"/> </region> <region name="hungary" lang="hu" poly_extract="east-europe"/> <region name="moldova" lang="ro" poly_extract="east-europe"/> <region name="poland" inner_download_prefix="$name" lang="pl" poly_extract="east-europe" join_map_files="yes"> <region name="greater-poland" srtm="no" hillshade="no" wiki="no" translate="Greater Poland;entity=node"/> <region name="kuyavian-pomeranian" srtm="no" hillshade="no" wiki="no" translate="Kuyavian-Pomerania;entity=node"/> <region name="lesser-poland" srtm="no" hillshade="no" wiki="no" translate="Lesser Poland;entity=node"/> <region name="lodz" srtm="no" hillshade="no" wiki="no" translate="Łódź;entity=node"/> <region name="lower-silesian" srtm="no" hillshade="no" wiki="no" translate="Lower Silesia;entity=node"/> <region name="lublin" srtm="no" hillshade="no" wiki="no" translate="name:en=Lublin Voivodeship;entity=relation"/> <region name="lubusz" srtm="no" hillshade="no" wiki="no"/> <region name="masovian" srtm="no" hillshade="no" wiki="no" translate="Masovia;entity=node"/> <region name="opole" srtm="no" hillshade="no" wiki="no" translate="Opole Voivodeship;entity=node"/> <region name="podlachian" srtm="no" hillshade="no" wiki="no" translate="Podlachia;entity=node"/> <region name="pomeranian" srtm="no" hillshade="no" wiki="no" translate="Pomerania;entity=node"/> <region name="silesian" srtm="no" hillshade="no" wiki="no" translate="Silesia;entity=node"/> <region name="subcarpathian" srtm="no" hillshade="no" wiki="no" translate="Subcarpathia;entity=node"/> <region name="swietokrzyskie" srtm="no" hillshade="no" wiki="no" translate="Holy Cross;entity=node"/> <region name="warmian-masurian" srtm="no" hillshade="no" wiki="no" translate="Warmian-Masurian Voivodeship;entity=node"/> <region name="west-pomeranian" srtm="no" hillshade="no" wiki="no" translate="West Pomerania;entity=node"/> </region>

I need to get all the countries from Europe <region type="continent" name="europe"... all countries that are ChildNodes (For example, <region name="denmark" lang="da" poly_extract="north-europe"/> ).

I'm using XmlPullParser.

 public static Region parsedXMLForEurope(String xmlFile) { List<Region> allRegions = new ArrayList<>(); Region region = new Region("Europe"); try { XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); XmlPullParser parser = factory.newPullParser(); parser.setInput(new StringReader(xmlFile)); int eventType = parser.getEventType(); while(eventType != XmlPullParser.END_DOCUMENT) { Log.i("XMLParser", "******************"); Log.i("XMLParser", "Current counrtry is: " + parser.getAttributeValue(null, "name")); switch (eventType) { case XmlPullParser.START_TAG: if(parser.getName().equals("region") && parser.getAttributeValue(null, "poly_extract").contains("europe")) { Log.i("XMLParser", "******************"); Log.i("XMLParser", "Current country is: " + parser.getAttributeValue(null, "name")); region.pushRegion(new Region(parser.getAttributeValue(null, "name"))); } break; case XmlPullParser.END_TAG: Log.i("XMLParser", "******************"); Log.i("XMLParser", "Current country is: " + parser.getAttributeValue(null, "name")); break; } eventType = parser.next(); } } catch (Exception e ){ e.printStackTrace(); } return region; }

I only get the first 5 countries, but when a node has children

 <region name="finland" inner_download_prefix="$name" srtm="no" lang="fi,sv" poly_extract="north-europe"> <region map="no" name="aland" translate="name:fi=Ahvenanmaa;admin_level=3;entity=relation"/> <region type="srtm" name="eastern-finland" translate="Eastern Finland;entity=relation"/> <region name="northern-finland" map="no" srtm="no" hillshade="no" wiki="no" translate="name:en=Northern Finland;entity=relation" boundary="no">

the cycle stops completely.

Log Messages

  • Essentially XmlPullParser to parse? - katso
  • No, it doesn't matter. The main result. - Tash

1 answer 1

 import java.io.IOException; import java.io.StringReader; import java.util.List; import java.util.ArrayList; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import javax.xml.parsers.ParserConfigurationException; import org.xml.sax.InputSource; import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler; public class SAXHandler extends DefaultHandler { private String rootRegionName; private int depth = -1; // По умолчанию собирать всех потомков private List<String> regions; private boolean inWantedBranch = false; private int currentLevel = 0; private int branchLevel; public SAXHandler(String regionName) { this.rootRegionName = regionName; regions = new ArrayList<>(); } public SAXHandler(String regionName, int depth) { this(regionName); this.depth = depth; } public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { if(qName.equals("region")) { String name = attributes.getValue("name"); if((name != null) && (name.equals(rootRegionName))) { inWantedBranch = true; branchLevel = currentLevel; } if(inWantedBranch) { if(depth == -1) { regions.add(name); } else if(currentLevel <= (branchLevel + depth)) { regions.add(name); } } } ++currentLevel; } public void endElement(String uri, String localName, String qName) throws SAXException { --currentLevel; if(qName.equals("region") && (currentLevel == branchLevel)) { inWantedBranch = false; } } public List<String> getResult() { return regions; } } try { SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser saxParser = factory.newSAXParser(); // Собираем непосредственных потомков региона "europe" SAXHandler handler = new SAXHandler("europe", 1); saxParser.parse(new InputSource(new StringReader(xmlFile)), handler); List<String> countries = handler.getResult(); } catch(SAXException ex) {} catch(ParserConfigurationException ex) {} catch(IOException ex) {}
  • God bless you, good man! - Tash