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1
19
20 package org.efs.openreports.dispatcher;
21
22 import java.io.File  ;
23 import java.io.IOException ;
24
25 import javax.servlet.ServletConfig ;
26 import javax.servlet.ServletException ;
27 import javax.servlet.ServletOutputStream ;
28 import javax.servlet.http.HttpServlet ;
29 import javax.servlet.http.HttpServletRequest ;
30 import javax.servlet.http.HttpServletResponse ;
31
32 import org.apache.commons.io.FileUtils;
33 import org.apache.commons.lang.StringUtils;
34 import org.apache.log4j.Logger;
35 import org.efs.openreports.providers.DirectoryProvider;
36 import org.efs.openreports.providers.DirectoryProviderAware;
37 import org.efs.openreports.services.ReportService;
38 import org.efs.openreports.util.ORComponentManager;
39 import org.springframework.context.ApplicationContext;
40 import org.springframework.web.context.support.WebApplicationContextUtils;
41
42
43
44
50
51 public class ImageDispatcher extends HttpServlet implements DirectoryProviderAware
52 {
53 private static Logger log = Logger.getLogger(ImageDispatcher.class.getName());
54
55 private DirectoryProvider directoryProvider;
56
57 private String imageDirectory;
58 private String imageTempDirectory;
59
60 public void init(ServletConfig servletConfig) throws ServletException
61 {
62 ORComponentManager.initializeObject(this);
63
64 if (directoryProvider == null)
66 {
67 ApplicationContext appContext = WebApplicationContextUtils
68 .getRequiredWebApplicationContext(servletConfig.getServletContext());
69
70 directoryProvider = (DirectoryProvider) appContext.getBean("directoryProvider", ReportService.class);
71 }
72
73 imageDirectory = directoryProvider.getReportImageDirectory();
74 imageTempDirectory = directoryProvider.getReportImageTempDirectory();
75
76 super.init(servletConfig);
77
78 log.info("Started...");
79 }
80
81 protected void service(HttpServletRequest request, HttpServletResponse response)
82 throws ServletException , IOException
83 {
84 String fileName = "";
85
86 try
87 {
88 fileName = StringUtils.substringAfterLast(request.getRequestURI(), "/");
89
90 File file = new File (imageDirectory + fileName);
91 if (!file.exists())
92 {
93 file = new File (imageTempDirectory + fileName);
94 }
95
96 byte[] imageData = FileUtils.readFileToByteArray(file);
97
98 response.setContentLength(imageData.length);
99 ServletOutputStream ouputStream = response.getOutputStream();
100
101 ouputStream.write(imageData, 0, imageData.length);
102 ouputStream.flush();
103 ouputStream.close();
104 }
105 catch (Exception e)
106 {
107 String message = "Image Not Found: " + fileName;
108 response.getOutputStream().write(message.getBytes());
109 }
110 }
111
112 public void setDirectoryProvider(DirectoryProvider directoryProvider)
113 {
114 this.directoryProvider = directoryProvider;
115 }
116 }
117 |
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