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1   //
2   //  ========================================================================
3   //  Copyright (c) 1995-2015 Mort Bay Consulting Pty. Ltd.
4   //  ------------------------------------------------------------------------
5   //  All rights reserved. This program and the accompanying materials
6   //  are made available under the terms of the Eclipse Public License v1.0
7   //  and Apache License v2.0 which accompanies this distribution.
8   //
9   //      The Eclipse Public License is available at
10  //      http://www.eclipse.org/legal/epl-v10.html
11  //
12  //      The Apache License v2.0 is available at
13  //      http://www.opensource.org/licenses/apache2.0.php
14  //
15  //  You may elect to redistribute this code under either of these licenses.
16  //  ========================================================================
17  //
18  
19  package org.eclipse.jetty.embedded;
20  
21  import java.io.IOException;
22  
23  import javax.servlet.ServletException;
24  import javax.servlet.http.HttpServlet;
25  import javax.servlet.http.HttpServletRequest;
26  import javax.servlet.http.HttpServletResponse;
27  
28  import org.eclipse.jetty.server.Server;
29  import org.eclipse.jetty.servlet.ServletHandler;
30  
31  public class MinimalServlets
32  {
33      public static void main( String[] args ) throws Exception
34      {
35          // Create a basic jetty server object that will listen on port 8080.
36          // Note that if you set this to port 0 then a randomly available port
37          // will be assigned that you can either look in the logs for the port,
38          // or programmatically obtain it for use in test cases.
39          Server server = new Server(8080);
40  
41          // The ServletHandler is a dead simple way to create a context handler
42          // that is backed by an instance of a Servlet.
43          // This handler then needs to be registered with the Server object.
44          ServletHandler handler = new ServletHandler();
45          server.setHandler(handler);
46  
47          // Passing in the class for the Servlet allows jetty to instantiate an
48          // instance of that Servlet and mount it on a given context path.
49  
50          // IMPORTANT:
51          // This is a raw Servlet, not a Servlet that has been configured
52          // through a web.xml @WebServlet annotation, or anything similar.
53          handler.addServletWithMapping(HelloServlet.class, "/*");
54  
55          // Start things up!
56          server.start();
57  
58          // The use of server.join() the will make the current thread join and
59          // wait until the server is done executing.
60          // See
61          // http://docs.oracle.com/javase/7/docs/api/java/lang/Thread.html#join()
62          server.join();
63      }
64  
65      @SuppressWarnings("serial")
66      public static class HelloServlet extends HttpServlet
67      {
68          @Override
69          protected void doGet( HttpServletRequest request,
70                                HttpServletResponse response ) throws ServletException,
71                                                              IOException
72          {
73              response.setContentType("text/html");
74              response.setStatus(HttpServletResponse.SC_OK);
75              response.getWriter().println("<h1>Hello from HelloServlet</h1>");
76          }
77      }
78  }