86 lines
2.2 KiB
Java
86 lines
2.2 KiB
Java
|
|
|
|
import java.io.IOException;
|
|
import java.net.HttpURLConnection;
|
|
import java.net.MalformedURLException;
|
|
import java.net.SocketTimeoutException;
|
|
import java.net.URL;
|
|
import java.net.URLConnection;
|
|
|
|
import org.slf4j.Logger;
|
|
import org.slf4j.LoggerFactory;
|
|
|
|
|
|
/**
|
|
* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it
|
|
* @Apr 26, 2013
|
|
*
|
|
*/
|
|
public class HttpRequestUtil {
|
|
|
|
private static final int CONNECTION_TIMEOUT = 1000;
|
|
public static final Logger logger = LoggerFactory.getLogger(HttpRequestUtil.class);
|
|
|
|
public static boolean urlExists(String urlConn) throws Exception {
|
|
|
|
|
|
if(urlConn==null || urlConn.isEmpty())
|
|
return false;
|
|
|
|
URL url;
|
|
|
|
try {
|
|
url = new URL(urlConn);
|
|
|
|
URLConnection connection = url.openConnection();
|
|
connection.setConnectTimeout(CONNECTION_TIMEOUT);
|
|
connection.setReadTimeout(CONNECTION_TIMEOUT+CONNECTION_TIMEOUT);
|
|
|
|
logger.trace("open connection on: " + url);
|
|
|
|
// Cast to a HttpURLConnection
|
|
if (connection instanceof HttpURLConnection) {
|
|
HttpURLConnection httpConnection = (HttpURLConnection) connection;
|
|
|
|
httpConnection.setRequestMethod("GET");
|
|
|
|
int code = httpConnection.getResponseCode();
|
|
|
|
httpConnection.disconnect();
|
|
|
|
if (code == 200) {
|
|
logger.trace("status code is "+code+" - on url connection: "+urlConn);
|
|
return true;
|
|
}else
|
|
logger.warn("status code is "+code+" - on url connection: "+urlConn);
|
|
|
|
// LOG.trace("result: "+result);
|
|
|
|
} else {
|
|
logger.error("error - not a http request!");
|
|
}
|
|
|
|
return false;
|
|
|
|
} catch (SocketTimeoutException e) {
|
|
logger.error("Error SocketTimeoutException with url " +urlConn, e);
|
|
return true;
|
|
} catch (MalformedURLException e) {
|
|
logger.error("Error MalformedURLException with url " +urlConn, e);
|
|
throw new Exception("Error MalformedURLException");
|
|
} catch (IOException e) {
|
|
logger.error("Error IOException with url " +urlConn, e);
|
|
throw new Exception("Error IOException");
|
|
}catch (Exception e) {
|
|
logger.error("Error Exception with url " +urlConn, e);
|
|
throw new Exception("Error Exception");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
System.out.println(HttpRequestUtil.urlExists("http://geoserver2.d4science.research-infrastructures.eu/geoserver/wms"));
|
|
}
|
|
}
|