webapps/examples/WEB-INF/classes/async/Async1.java

/*
* 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 javax.servlet.AsyncContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;

public class Async1 extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private static final Log log = LogFactory.getLog(Async1.class);

    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        final AsyncContext actx = req.startAsync();
        actx.setTimeout(30*1000);
        Runnable run = new Runnable() {
            @Override
            public void run() {
                try {
                    String path = "/jsp/async/async1.jsp";
                    Thread.currentThread().setName("Async1-Thread");
                    log.info("Putting AsyncThread to sleep");
                    Thread.sleep(2*1000);
                    log.info("Dispatching to "+path);
                    actx.dispatch(path);
                }catch (InterruptedException x) {
                    log.error("Async1",x);
                }catch (IllegalStateException x) {
                    log.error("Async1",x);
                }
            }
        };
        Thread t = new Thread(run);
        t.start();
    }


}