/**
* Takes an input dir and returns the du on that local directory. Very basic implementation.
*
* @param dir The input dir to get the disk space of this local dir
* @return The total disk space of the input local directory
*/
public static long getDU(File dir) {
long size = 0;
if (!dir.exists()) return 0;
if (!dir.isDirectory()) {
return dir.length();
} else {
File[] allFiles = dir.listFiles();
if (allFiles != null) {
for (int i = 0; i < allFiles.length; i++) {
boolean isSymLink;
try {
isSymLink = org.apache.commons.io.FileUtils.isSymlink(allFiles[i]);
} catch (IOException ioe) {
isSymLink = true;
}
if (!isSymLink) {
size += getDU(allFiles[i]);
}
}
}
return size;
}
}
/**
* 判断文件是否为链接文件
*
* @param file
* @return
* @throws IOException
*/
public static boolean isLink(File file) throws IOException {
return FileUtils.isSymlink(file);
}