Hm, we'll have to look into that one. In the meantime, I added
org.apache.commons.io.FileUtilsListFilesTest.testListFilesMissing()
which asserts the current behavior in git master.
TY,
Gary
On 2024/12/30 17:00:17 Dave Garratt wrote:
>
> I have recently tried updating from Commons IO 2.16.1 to Commons IO 2.18.0
>
> My java program constantly polls a folder for the presence of files. Normally
> this will be a remote folder on a windows share.
>
> In Commons IO 2.16.1 when I use FileUtils.listFiles it would trigger an
> exception if the folder being polled became unavailable and I would use this
> to trigger an action.
>
> In Commons IO 2.18.0 the error does not occur.
>
> I have created a very simple test program to illustrate this.
>
> Running this code with Commons IO 2.16.1 and passing an invalid (non
> existent) path to it gives me the following exception (which in my case is
> desirable):
>
> import java.io.File;
>
> import org.apache.commons.io.FileUtils;
>
> public class Test2161
> {
>
> public static void main(String[] args)
> {
> File dir = new File("/Users/dave/Downloads/nonexistent");
>
> try
> {
> FileUtils.listFiles(dir, args, false);
> }
> catch (Exception ex)
> {
> System.out.println(ex.getMessage());
> ex.printStackTrace();
> }
> }
> }
>
> java.nio.file.NoSuchFileException: /Users/dave/Downloads/nonexistent
> java.io.UncheckedIOException: java.nio.file.NoSuchFileException:
> /Users/dave/Downloads/nonexistent
> at org.apache.commons.io.function.Uncheck.wrap(Uncheck.java:339)
> at org.apache.commons.io.function.Uncheck.get(Uncheck.java:199)
> at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:2313)
> at Test2161.main(Test2161.java:14)
> Caused by: java.nio.file.NoSuchFileException:
> /Users/dave/Downloads/nonexistent
> at
> java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
> at
> java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:106)
> at
> java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
> at
> java.base/sun.nio.fs.UnixFileAttributeViews$Basic.readAttributes(UnixFileAttributeViews.java:55)
> at
> java.base/sun.nio.fs.UnixFileSystemProvider.readAttributes(UnixFileSystemProvider.java:148)
> at java.base/java.nio.file.Files.readAttributes(Files.java:1851)
> at
> java.base/java.nio.file.FileTreeWalker.getAttributes(FileTreeWalker.java:226)
> at java.base/java.nio.file.FileTreeWalker.visit(FileTreeWalker.java:277)
> at java.base/java.nio.file.FileTreeWalker.walk(FileTreeWalker.java:323)
> at
> java.base/java.nio.file.FileTreeIterator.<init>(FileTreeIterator.java:71)
> at java.base/java.nio.file.Files.walk(Files.java:3918)
> at org.apache.commons.io.file.PathUtils.walk(PathUtils.java:1847)
> at org.apache.commons.io.FileUtils.streamFiles(FileUtils.java:2952)
> at
> org.apache.commons.io.FileUtils.lambda$listFiles$10(FileUtils.java:2313)
> at org.apache.commons.io.function.Uncheck.get(Uncheck.java:197)
> ... 2 more
>
>
>
> If however I run the same code with Commons IO 2.18.0 I get nothing, no
> indication that the path is not valid which make it difficult to determine if
> the folder is empty or the remote file server is shutdown.
>
> Am I supposed to use a different way to accomplish the same error condition
> now ?
>
> Thanks
>
> Dave
>
>
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