/*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed with
* this work for additional information regarding copyright ownership .
* The ASF licenses this file to You 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 async;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import jakarta.servlet.AsyncContext;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
public class Async0 extends HttpServlet {
private static final long serialVersionUID = 1 L;
private static final Log log = LogFactory.getLog(Async0.class );
@Override
protected void service(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
if (Boolean .TRUE .equals(req.getAttribute("dispatch" ))) {
log.info("Received dispatch, completing on the worker thread." );
log.info("After complete called started:" +req.isAsyncStarted());
Date date = new Date(System.currentTimeMillis());
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z" );
resp.getWriter().write("Async dispatch worked: " + sdf.format(date) + "\n" );
} else {
resp.setContentType("text/plain" );
final AsyncContext actx = req.startAsync();
actx.setTimeout(Long .MAX_VALUE);
Runnable run = new Runnable() {
@Override
public void run() {
try {
req.setAttribute("dispatch" , Boolean .TRUE );
Thread .currentThread().setName("Async0-Thread" );
log.info("Putting AsyncThread to sleep" );
Thread .sleep(2 *1000 );
log.info("Dispatching" );
actx.dispatch();
}catch (InterruptedException | IllegalStateException x) {
log.error("Async1" ,x);
}
}
};
Thread t = new Thread (run);
t.start();
}
}
}
Messung V0.5 in Prozent C=98 H=79 G=88
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-10-02)
¤
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