root / tags / v1_0_2_Build_908 / applications / appCatalogYNomenclatorClient / src / es / gva / cit / catalogClient / protocols / HTTPGetProtocol.java @ 11054
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package es.gva.cit.catalogClient.protocols; |
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import es.gva.cit.catalogClient.metadataXML.XMLTree; |
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import java.io.ByteArrayInputStream; |
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import java.io.InputStream; |
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import java.net.URL; |
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import java.util.Collection; |
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import org.apache.commons.httpclient.DefaultMethodRetryHandler; |
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import org.apache.commons.httpclient.HttpClient; |
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import org.apache.commons.httpclient.HttpStatus; |
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import org.apache.commons.httpclient.NameValuePair; |
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import org.apache.commons.httpclient.methods.GetMethod; |
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/**
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*
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*
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*
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* @author Jorge Piera Llodra (piera_jor@gva.es)
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*/
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public class HTTPGetProtocol implements IProtocols { |
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/**
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*
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*
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*
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* @return
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* @param url
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* @param object
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* @param firstRecord
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*/
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public Collection doQuery(URL url, Object object, int firstRecord) { |
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NameValuePair[] parameters = (NameValuePair[]) object; |
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InputStream is = null; |
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ByteArrayInputStream output = null; |
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// Create an instance of HttpClient.
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HttpClient client = new HttpClient();
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// Create a method instance.
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GetMethod method = new GetMethod("http://" + url.getHost() + ":" + |
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url.getPort() + url.getPath()); |
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// Provide custom retry handler is necessary
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DefaultMethodRetryHandler retryhandler = new DefaultMethodRetryHandler();
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retryhandler.setRequestSentRetryEnabled(false);
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retryhandler.setRetryCount(3);
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method.setMethodRetryHandler(retryhandler); |
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method.setQueryString(parameters); |
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System.out.println(method.getQueryString());
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try {
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// Execute the method.
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int statusCode = client.executeMethod(method);
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//System.out.println("QueryString>>> "+ method.getQueryString());
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if (statusCode != HttpStatus.SC_OK) {
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System.err.println("Fallo en el m?todo: " + |
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method.getStatusLine()); |
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return null; |
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} |
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// Process the answer
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is = method.getResponseBodyAsStream(); |
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byte[] buffer = new byte[256]; |
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String str = new String(""); |
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while (true) { |
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int n = is.read(buffer);
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if (n < 0) { |
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break;
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} |
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str = str + new String(buffer, 0, n); |
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} |
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is.close(); |
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System.out.println(str);
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if (str.equals("")) { |
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output = null;
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} else {
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output = new ByteArrayInputStream(str.getBytes()); |
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} |
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} catch (Exception e) { |
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return null; |
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} finally {
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// Release the connection.
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method.releaseConnection(); |
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} |
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Collection col = new java.util.ArrayList(); |
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col.add(XMLTree.xmlToTree(output)); |
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return col;
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} |
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/**
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*
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*
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*
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* @return
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* @param url
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*/
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public static boolean isProtocolSupported(URL url) { |
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return true; |
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} |
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} |