| /* |
| * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.Enumeration; |
| |
| import jakarta.servlet.ServletException; |
| import jakarta.servlet.annotation.WebServlet; |
| import jakarta.servlet.http.HttpServlet; |
| import jakarta.servlet.http.HttpServletRequest; |
| import jakarta.servlet.http.HttpServletResponse; |
| |
| @WebServlet("/output") |
| public class TestServlet extends HttpServlet { |
| public void service(HttpServletRequest req, HttpServletResponse res) |
| throws IOException, ServletException { |
| |
| try { |
| Thread.currentThread().sleep(1000); |
| } catch(InterruptedException ex) { |
| ex.printStackTrace(); |
| } |
| PrintWriter writer = res.getWriter(); |
| String attrA = (String)req.getAttribute("A"); |
| String attrB = (String)req.getAttribute("C"); |
| StringBuilder sb = new StringBuilder("Hello world: "); |
| if (attrA != null) { |
| sb.append(attrA); |
| } |
| if (attrB != null) { |
| sb.append(", "); |
| sb.append(attrB); |
| } |
| String output = sb.toString(); |
| writer.write(output); |
| System.out.println(output); |
| } |
| } |