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1
21 package com.jaspersoft.jasperserver.api.engine.jasperreports.util;
22
23 import java.io.IOException  ;
24 import java.io.InputStream ;
25 import java.net.URL ;
26 import java.net.URLConnection ;
27 import java.text.SimpleDateFormat ;
28 import java.util.Date ;
29
30
34 public class JarConnection extends URLConnection {
35
36 private static SimpleDateFormat DATE_FORMAT = new SimpleDateFormat (
37 "EEE, dd MMM yyyy hh:mm:ss 'GMT'");
38
39 private final JarFileEntry entry;
40
41 public JarConnection(URL url, JarFileEntry entry) {
42 super(url);
43
44 this.entry = entry;
45 }
46
47 public void connect() throws IOException {
48 connected = true;
49 }
50
51 public InputStream getInputStream() throws IOException {
52 return entry.getInputStream();
53 }
54
55 public int getContentLength() {
56 return (int) entry.getSize();
57 }
58
59 public long getLastModified() {
60 return entry.getTime();
61 }
62
63 public String getHeaderField(String field) {
64 String header = null;
65 if (field.equals("content-length"))
66 header = Long.toString(entry.getSize());
67 else if (field.equals("last-modified")) {
68 synchronized (DATE_FORMAT) {
69 header = DATE_FORMAT.format(new Date (entry.getTime()));
70 }
71 }
72 return header;
73 }
74 }
75 |
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