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1
5 package com.teamkonzept.web;
6
7 import java.io.*;
8 import java.util.*;
9 import org.apache.log4j.Category;
10
11 public class TKTemporaryFile
12 {
13
14 private static final Category CATEGORY = Category.getInstance(TKTemporaryFile.class);
15
16 private static Random rand = new Random();
17 private static File tempFileDirectory = null;
18
19 public static File newTempFile() throws FileNotFoundException
20 {
21 if (tempFileDirectory == null) {
22 tempFileDirectory = createTempDir();
23 }
24 return newTempFile( tempFileDirectory );
25 }
26
27 private static File newTempFile(File baseDir)
28 {
29 File newFile = null;
30 while( newFile == null ) {
31 String  nameBase = String.valueOf( rand.nextLong() );
32 newFile = new File( baseDir, nameBase+".tmp" );
33 if( newFile.exists() ) {
34 newFile = null;
35 }
36 }
37 return newFile;
38 }
39
40 private static File createTempDir() throws FileNotFoundException
41 {
42 String dirname = System.getProperty ("java.io.tmpdir");
43 File tempDir = new File(dirname);
44 if(!tempDir.exists()) {
45 tempDir.mkdirs();
46 }
47 else if (!tempDir.isDirectory()) {
48 throw new FileNotFoundException("Unable to create temporary directory " + tempDir.getName() +
49 " Reason: A file with the same name already exists.");
50 }
51 return tempDir;
52 }
53
54 {
55 try {
56 tempFileDirectory = createTempDir();
57 }
58 catch (FileNotFoundException e) {
59 CATEGORY.error("Cannot create temp directory " + System.getProperty("java.io.tmpdir"));
60 }
61 }
62 }
63
64 |
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