1 /*
2 * Copyright (c) 2002-2020, City of Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.plugins.jasper.service;
35
36 import fr.paris.lutece.portal.service.util.AppLogService;
37
38 import java.io.IOException;
39
40 import javax.servlet.ServletException;
41 import javax.servlet.http.HttpServlet;
42 import javax.servlet.http.HttpServletRequest;
43 import javax.servlet.http.HttpServletResponse;
44
45 /**
46 * DownloadFileServlet
47 *
48 *
49 */
50 public class DownloadFileServlet extends HttpServlet
51 {
52 private static final long serialVersionUID = -6564244054015195801L;
53
54 public DownloadFileServlet( )
55 {
56 super( );
57 }
58
59 /**
60 * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
61 *
62 * @param request
63 * servlet request
64 * @param response
65 * servlet response
66 * @throws ServletException
67 * the servlet Exception
68 * @throws IOException
69 * the io exception
70 */
71 protected void processRequest( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
72 {
73 try
74 {
75 byte [ ] fileContent = JasperFileLinkService.exportFile( request );
76 String strFileName = JasperFileLinkService.getFileName( request );
77
78 if ( fileContent != null )
79 {
80 // the header and also the names set by which user will be prompted to save
81 response.setHeader( "Content-Disposition", "attachment;filename=\"" + strFileName + "\"" );
82
83 String strMimetype = getServletContext( ).getMimeType( strFileName );
84 response.setContentType( ( strMimetype != null ) ? strMimetype : "application/octet-stream" );
85 response.setHeader( "Cache-Control", "must-revalidate" );
86 response.getOutputStream( ).write( fileContent );
87 }
88 }
89 catch( Exception e )
90 {
91 AppLogService.error( e.getMessage( ), e );
92 }
93 finally
94 {
95 response.getOutputStream( ).flush( );
96 }
97 }
98
99 /**
100 * Handles the HTTP <code>GET</code> method.
101 *
102 * @param request
103 * servlet request
104 * @param response
105 * servlet response
106 * @throws ServletException
107 * the servlet Exception
108 * @throws IOException
109 * the io exception
110 */
111 protected void doGet( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
112 {
113 processRequest( request, response );
114 }
115
116 /**
117 * Handles the HTTP <code>POST</code> method.
118 *
119 * @param request
120 * servlet request
121 * @param response
122 * servlet response
123 * @throws ServletException
124 * the servlet Exception
125 * @throws IOException
126 * the io exception
127 */
128 protected void doPost( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
129 {
130 processRequest( request, response );
131 }
132
133 /**
134 * Returns a short description of the servlet.
135 *
136 * @return message
137 */
138 public String getServletInfo( )
139 {
140 return "Servlet downloadFile content";
141 }
142 }