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1   /*
2    * JBoss, Home of Professional Open Source
3    * Copyright 2014, Red Hat, Inc. and/or its affiliates, and individual
4    * contributors by the @authors tag. See the copyright.txt in the
5    * distribution for a full listing of individual contributors.
6    *
7    * Licensed under the Apache License, Version 2.0 (the "License");
8    * you may not use this file except in compliance with the License.
9    * You may obtain a copy of the License at
10   * http://www.apache.org/licenses/LICENSE-2.0
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.jboss.as.quickstarts.cdi.alternative;
18  
19  import java.io.IOException;
20  
21  import javax.inject.Inject;
22  import javax.servlet.RequestDispatcher;
23  import javax.servlet.ServletException;
24  import javax.servlet.annotation.WebServlet;
25  import javax.servlet.http.HttpServlet;
26  import javax.servlet.http.HttpServletRequest;
27  import javax.servlet.http.HttpServletResponse;
28  
29  /**
30   * <p>
31   * Servlet implementation class Demo
32   * </p>
33   * 
34   * @author Nevin Zhu
35   * 
36   */
37  @WebServlet("/")
38  public class Demo extends HttpServlet {
39      private static final long serialVersionUID = 1L;
40  
41      /*
42       * Attribute will be injected during run time. If beans.xml has alternative defined, then that class will be injected.
43       * Otherwise, the default is injected.
44       */
45      @Inject
46      private Tax tax;
47  
48      /**
49       * handles the incoming servlet request
50       */
51      protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
52  
53          try {
54              request.setAttribute("type", tax.getRate());
55              RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/result.jsp");
56              dispatcher.forward(request, response);
57          } catch (Exception e) {
58              e.printStackTrace();
59          }
60      }
61  
62  }