127 lines
3.4 KiB
Java
127 lines
3.4 KiB
Java
package org.gcube.spatial.data.geoutility.util;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.SocketTimeoutException;
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import java.net.URL;
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import java.net.URLConnection;
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import org.apache.log4j.Logger;
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/**
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* The Class HttpRequestUtil.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
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* Jan 22, 2016
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*/
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public class HttpRequestUtil {
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private static final String SERVICE_EXCEPTION_REPORT = "ServiceExceptionReport"; //WMS Exception
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private static final String OWS_EXCEPTION_REPORT = "ows:ExceptionReport"; //OWS Exception
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private static final int CONNECTION_TIMEOUT = 1000;
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public static Logger logger = Logger.getLogger(HttpRequestUtil.class);
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/**
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* Url exists.
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*
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* @param urlConn the url conn
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* @param verifyIsWmsGeoserver the verify is wms geoserver
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* @return true, if successful
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* @throws Exception the exception
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*/
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public static boolean urlExists(String urlConn, boolean verifyIsWmsGeoserver) throws Exception {
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URL url;
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try {
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url = new URL(urlConn);
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URLConnection connection = url.openConnection();
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connection.setConnectTimeout(CONNECTION_TIMEOUT);
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connection.setReadTimeout(CONNECTION_TIMEOUT+CONNECTION_TIMEOUT);
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logger.trace("open connection on: " + url);
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// Cast to a HttpURLConnection
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if (connection instanceof HttpURLConnection) {
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HttpURLConnection httpConnection = (HttpURLConnection) connection;
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httpConnection.setRequestMethod("GET");
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int code = httpConnection.getResponseCode();
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if(verifyIsWmsGeoserver)
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return isGeoserver(httpConnection);
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httpConnection.disconnect();
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if (code == 200)
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return true;
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} else {
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logger.error("error - not a http request!");
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}
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return false;
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} catch (SocketTimeoutException e) {
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logger.error("Error SocketTimeoutException with url " +urlConn);
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throw new Exception("Error SocketTimeoutException");
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} catch (MalformedURLException e) {
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logger.error("Error MalformedURLException with url " +urlConn);
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throw new Exception("Error MalformedURLException");
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} catch (IOException e) {
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logger.error("Error IOException with url " +urlConn);
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throw new Exception("Error IOException");
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}catch (Exception e) {
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logger.error("Error Exception with url " +urlConn);
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throw new Exception("Error Exception");
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}
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}
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/**
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* Checks if is geoserver.
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*
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* @param httpConnection the http connection
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* @return true, if is geoserver
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* @throws IOException Signals that an I/O exception has occurred.
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*/
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private static boolean isGeoserver(HttpURLConnection httpConnection) throws IOException{
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BufferedReader rd = new BufferedReader(new InputStreamReader(httpConnection.getInputStream()));
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String line;
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String result = "";
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int code = httpConnection.getResponseCode();
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if (code == 200) {
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while ((line = rd.readLine()) != null) {
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result += line;
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}
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}
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else{
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rd.close();
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return false;
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}
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if(result.contains(OWS_EXCEPTION_REPORT) || result.contains(SERVICE_EXCEPTION_REPORT)){
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rd.close();
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return true;
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}
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rd.close();
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return false;
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}
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/**
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* The main method.
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*
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* @param args the arguments
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* @throws Exception the exception
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*/
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public static void main(String[] args) throws Exception {
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System.out.println(HttpRequestUtil.urlExists("http://geoserver2.d4science.research-infrastructures.eu/geoserver/wms", true));
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}
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}
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