Java tutorial
/** * Copyright (C) 2010 Julien SMADJA <julien dot smadja at gmail dot com> - Arnaud LEMAIRE <alemaire at norad dot fr> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.awired.visuwall.hudsonclient.loader; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import net.awired.visuwall.hudsonclient.exception.DocumentNotLoadedException; import org.w3c.dom.Document; import org.xml.sax.SAXException; import com.google.common.base.Preconditions; import com.google.common.io.Closeables; public class DocumentLoader { public Document loadFromUrl(String strUrl) throws DocumentNotLoadedException { Preconditions.checkNotNull(strUrl, "strUrl is mandatory"); InputStream stream = null; try { URL url = new URL(strUrl); stream = url.openStream(); DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance(); DocumentBuilder documentBuilder = builderFactory.newDocumentBuilder(); return documentBuilder.parse(stream); } catch (MalformedURLException e) { throw new DocumentNotLoadedException("Can't load document from url: " + strUrl, e); } catch (IOException e) { throw new DocumentNotLoadedException("Can't load document from url: " + strUrl, e); } catch (SAXException e) { throw new DocumentNotLoadedException("Can't load document from url: " + strUrl, e); } catch (ParserConfigurationException e) { throw new DocumentNotLoadedException("Can't load document from url: " + strUrl, e); } finally { Closeables.closeQuietly(stream); } } }