Blame |
Last modification |
View Log
| Download
| RSS feed
/*
* 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 http2;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.PushBuilder;
public class SimpleImagePush
extends HttpServlet
{
private static final long serialVersionUID = 1L
;
@
Override
protected void doGet
(HttpServletRequest req, HttpServletResponse resp
)
throws ServletException,
IOException {
resp.
setCharacterEncoding("UTF-8");
resp.
setContentType("text/html");
PrintWriter pw = resp.
getWriter();
PushBuilder pb = req.
newPushBuilder();
if (pb
!=
null) {
pb.
path("servlets/images/code.gif");
pb.
push();
pw.
println("<html>");
pw.
println("<body>");
pw.
println("<p>The following image was provided via a push request.</p>");
pw.
println("<img src=\"" + getServletContext
().
getContextPath() +
"/servlets/images/code.gif\"/>");
pw.
println("</body>");
pw.
println("</html>");
pw.
flush();
} else {
pw.
println("<html>");
pw.
println("<body>");
pw.
println("<p>Server push requests are not supported by this protocol.</p>");
pw.
println("</body>");
pw.
println("</html>");
}
}
}