stream.util.URLUtilities Maven / Gradle / Ivy
/*
* streams library
*
* Copyright (C) 2011-2012 by Christian Bockermann, Hendrik Blom
*
* streams is a library, API and runtime environment for processing high
* volume data streams. It is composed of three submodules "stream-api",
* "stream-core" and "stream-runtime".
*
* The streams library (and its submodules) is free software: you can
* redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* The stream.ai library (and its submodules) is distributed in the hope
* that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package stream.util;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
public class URLUtilities
{
public static String readContentOrEmpty( URL url ){
try {
return readContent( url );
} catch (Exception e) {
return "";
}
}
public static String readContent( URL url ) throws Exception {
if( url == null )
return "";
return readResponse( url.openStream() );
}
public static String readResponse( InputStream in ) throws Exception {
StringBuffer s = new StringBuffer();
BufferedReader reader = new BufferedReader( new InputStreamReader( in ) );
String line = reader.readLine();
while( line != null ){
s.append( line + "\n" );
line = reader.readLine();
}
reader.close();
return s.toString();
}
}