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1
21
22 package com.jaspersoft.jasperserver.war;
23
24 import java.io.BufferedInputStream  ;
25 import java.io.BufferedOutputStream ;
26 import java.io.File ;
27 import java.io.FileInputStream ;
28 import java.io.FileNotFoundException ;
29 import java.io.IOException ;
30 import java.net.URI ;
31 import java.net.URISyntaxException ;
32 import java.net.URL ;
33 import java.text.SimpleDateFormat ;
34 import java.util.Date ;
35
36 import javax.servlet.ServletConfig ;
37 import javax.servlet.ServletException ;
38 import javax.servlet.http.HttpServlet ;
39 import javax.servlet.http.HttpServletRequest ;
40 import javax.servlet.http.HttpServletResponse ;
41
42 import org.apache.commons.logging.Log;
43 import org.apache.commons.logging.LogFactory;
44
45
49 public class OlapGetChart extends HttpServlet {
50 private static final Log logger = LogFactory.getLog(OlapGetChart.class);
51
52 String basePath;
53
54
57 public OlapGetChart() {
58 super();
59 }
60
61
63 final static String fileNotFound="/WEB-INF/jpivot/img_not_found.gif";
64
65 public void init(ServletConfig config) throws ServletException {
66 super.init(config);
67 }
68
69
71 public void destroy() {
72
73 }
74
75
79 protected void processRequest(HttpServletRequest request, HttpServletResponse response)
80 throws ServletException , IOException {
81
82 String filename = request.getParameter("filename");
83 logger.debug("GetChart called: filename="+filename);
84 if (filename == null) {
85 throw new ServletException ("Parameter 'filename' must be supplied");
86 }
87
88 filename = searchReplace(filename, "..", "");
91
92 File file = new File (System.getProperty("java.io.tmpdir"), filename);
94 if (!file.exists()) {
95 logger.error("File '" + file.getAbsolutePath() + "' does not exist");
96 URL url = this.getClass().getResource(fileNotFound);
97
98 URI uri;
99 try {
100 uri = new URI (url.toString());
101 } catch (URISyntaxException e) {
102 throw new ServletException (e);
103 }
104 file = new File (uri.getPath());
105 } else {
106 sendTempFile(file, response);
108 }
109
110 return;
111
112 }
113 public static void sendTempFile(File file, HttpServletResponse response)
114 throws IOException , FileNotFoundException {
115
116 String mimeType = null;
117 String filename = file.getName();
118 if (filename.length() > 5) {
119 if (filename.substring(filename.length() - 5, filename.length()).equals(".jpeg") ||
120 filename.substring(filename.length() - 5, filename.length()).equals(".jpg")) {
121 mimeType = "image/jpeg";
122 }
123 else if (filename.substring(filename.length() - 4, filename.length()).equals(".png")) {
124 mimeType = "image/png";
125 }
126 else if (filename.substring(filename.length() - 4, filename.length()).equals(".gif")) {
127 mimeType = "image/gif";
128 }
129 }
130 sendTempFile(file, response, mimeType);
131 }
132
133
143 public static void sendTempFile(File file, HttpServletResponse response,
144 String mimeType)
145 throws IOException , FileNotFoundException {
146
147 if (file.exists()) {
148 BufferedInputStream bis = new BufferedInputStream (new FileInputStream (file));
149
150 if (mimeType != null) {
152 response.setHeader("Content-Type", mimeType);
153 }
154 response.setHeader("Content-Length", String.valueOf(file.length()));
155 SimpleDateFormat sdf = new SimpleDateFormat ("EEE, dd MMM yyyy HH:mm:ss z");
156 response.setHeader("Last-Modified", sdf.format(new Date (file.lastModified())));
157
158 BufferedOutputStream bos = new BufferedOutputStream (response.getOutputStream());
159 byte[] input = new byte[1024];
160 boolean eof = false;
161 while (!eof) {
162 int length = bis.read(input);
163 if (length == -1) {
164 eof = true;
165 } else {
166 bos.write(input, 0, length);
167 }
168 }
169 bos.flush();
170 bis.close();
171 bos.close();
172 }
173 else {
174 throw new FileNotFoundException (file.getAbsolutePath());
175 }
176 return;
177 }
178
179
189 public static String searchReplace(String inputString,
190 String searchString,
191 String replaceString) {
192
193 int i = inputString.indexOf(searchString);
194 if (i == -1) {
195 return inputString;
196 }
197
198 String r = "";
199 r += inputString.substring(0, i) + replaceString;
200 if (i + searchString.length() < inputString.length()) {
201 r += searchReplace(inputString.substring(i + searchString.length()),
202 searchString,
203 replaceString);
204 }
205
206 return r;
207 }
208
209
213 protected void doGet(HttpServletRequest request, HttpServletResponse response)
214 throws ServletException , IOException {
215 processRequest(request, response);
216 }
217
218
222 protected void doPost(HttpServletRequest request, HttpServletResponse response)
223 throws ServletException , IOException {
224 processRequest(request, response);
225 }
226
227
229 public String getServletInfo() {
230 return "Serve up charts for OLAP";
231 }
232
233 }
234 |
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