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1   /*******************************************************************************
2    *   Gisgraphy Project 
3    * 
4    *   This library is free software; you can redistribute it and/or
5    *   modify it under the terms of the GNU Lesser General Public
6    *   License as published by the Free Software Foundation; either
7    *   version 2.1 of the License, or (at your option) any later version.
8    * 
9    *   This library is distributed in the hope that it will be useful,
10   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12   *   Lesser General Public License for more details.
13   * 
14   *   You should have received a copy of the GNU Lesser General Public
15   *   License along with this library; if not, write to the Free Software
16   *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
17   * 
18   *  Copyright 2008  Gisgraphy project 
19   *  David Masclet <davidmasclet@gisgraphy.com>
20   *  
21   *  
22   *******************************************************************************/
23  package com.gisgraphy.webapp.action;
24  
25  import java.io.File;
26  import java.io.FileInputStream;
27  import java.io.FileOutputStream;
28  import java.io.InputStream;
29  import java.io.OutputStream;
30  
31  import org.apache.struts2.ServletActionContext;
32  
33  import com.gisgraphy.Constants;
34  
35  /**
36   * Sample action that shows how to do file upload with Struts 2.
37   */
38  public class FileUploadAction extends BaseAction {
39      private static final long serialVersionUID = -9208910183310010569L;
40  
41      private File file;
42  
43      private String fileContentType;
44  
45      private String fileFileName;
46  
47      private String name;
48  
49      /**
50       * Upload the file
51       * 
52       * @return String with result (cancel, input or sucess)
53       * @throws Exception
54       *                 if something goes wrong
55       */
56      public String upload() throws Exception {
57  	if (this.cancel != null) {
58  	    return "cancel";
59  	}
60  
61  	// the directory to upload to
62  	String uploadDir = ServletActionContext.getServletContext()
63  		.getRealPath("/resources")
64  		+ "/" + getRequest().getRemoteUser() + "/";
65  
66  	// write the file to the file specified
67  	File dirPath = new File(uploadDir);
68  
69  	if (!dirPath.exists()) {
70  	    dirPath.mkdirs();
71  	}
72  
73  	// retrieve the file data
74  	InputStream stream = new FileInputStream(file);
75  
76  	// write the file to the file specified
77  	OutputStream bos = new FileOutputStream(uploadDir + fileFileName);
78  	int bytesRead;
79  	byte[] buffer = new byte[8192];
80  
81  	while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
82  	    bos.write(buffer, 0, bytesRead);
83  	}
84  
85  	bos.close();
86  	stream.close();
87  
88  	// place the data into the request for retrieval on next page
89  	getRequest().setAttribute("location",
90  		dirPath.getAbsolutePath() + Constants.FILE_SEP + fileFileName);
91  
92  	String link = getRequest().getContextPath() + "/resources" + "/"
93  		+ getRequest().getRemoteUser() + "/";
94  
95  	getRequest().setAttribute("link", link + fileFileName);
96  
97  	return SUCCESS;
98      }
99  
100     /**
101      * Default method - returns "input"
102      * 
103      * @return "input"
104      */
105     @Override
106     public String execute() {
107 	return INPUT;
108     }
109 
110     public void setFile(File file) {
111 	this.file = file;
112     }
113 
114     public void setFileContentType(String fileContentType) {
115 	this.fileContentType = fileContentType;
116     }
117 
118     public void setFileFileName(String fileFileName) {
119 	this.fileFileName = fileFileName;
120     }
121 
122     public void setName(String name) {
123 	this.name = name;
124     }
125 
126     public String getName() {
127 	return name;
128     }
129 
130     public File getFile() {
131 	return file;
132     }
133 
134     public String getFileContentType() {
135 	return fileContentType;
136     }
137 
138     public String getFileFileName() {
139 	return fileFileName;
140     }
141 
142     @Override
143     public void validate() {
144 	if (getRequest().getMethod().equalsIgnoreCase("post")) {
145 	    getFieldErrors().clear();
146 	    if ("".equals(fileFileName) || file == null) {
147 		super.addFieldError("file", getText("errors.requiredField",
148 			new String[] { getText("uploadForm.file") }));
149 	    } else if (file.length() > 2097152) {
150 		addActionError(getText("maxLengthExceeded"));
151 	    }
152 	}
153     }
154 }