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[bug-69323] DefaultTempFileCreationStrategy should worry about OS deleting the temp dir. Thanks to Palle Girgensohn. This closes #691 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1920610 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
PJ Fanning 2024-09-13 11:09:21 +00:00
parent 5b404ebc6b
commit 5a977d1a7b
1 changed files with 9 additions and 5 deletions
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10
poi/src/main/java/org/apache/poi/util/DefaultTempFileCreationStrategy.java
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@ -73,9 +73,13 @@ public class DefaultTempFileCreationStrategy implements TempFileCreationStrategy
this.dir = dir;
}
private void createPOIFilesDirectory() throws IOException {
// Create our temp dir only once by double-checked locking
// The directory is not deleted, even if it was created by this TempFileCreationStrategy
private void createPOIFilesDirectoryIfNecessary() throws IOException {
// First make sure we recreate the directory if it was not somehow removed by a third party
if (dir != null && !dir.exists()) {
dir = null;
}
if (dir == null) {
final String tmpDir = System.getProperty(JAVA_IO_TMPDIR);
if (tmpDir == null) {
@ -104,7 +108,7 @@ public class DefaultTempFileCreationStrategy implements TempFileCreationStrategy
@Override
public File createTempFile(String prefix, String suffix) throws IOException {
// Identify and create our temp dir, if needed
createPOIFilesDirectory();
createPOIFilesDirectoryIfNecessary();
// Generate a unique new filename
File newFile = Files.createTempFile(dir.toPath(), prefix, suffix).toFile();
@ -122,7 +126,7 @@ public class DefaultTempFileCreationStrategy implements TempFileCreationStrategy
@Override
public File createTempDirectory(String prefix) throws IOException {
// Identify and create our temp dir, if needed
createPOIFilesDirectory();
createPOIFilesDirectoryIfNecessary();
// Generate a unique new filename
File newDirectory = Files.createTempDirectory(dir.toPath(), prefix).toFile();