- * This method copies the contents of the specified source file to the - * specified destination file. The directory holding the destination file is - * created if it does not exist. If the destination file exists, then this - * method will overwrite it. - *
- * Note: This method tries to preserve the file's last - * modified date/times using {@link File#setLastModified(long)}, however - * it is not guaranteed that the operation will succeed. - * If the modification operation fails, no indication is provided. - * - * @param srcFile an existing file to copy, must not be null - * @param destFile the new file, must not be null - * @throws IOException if source or destination is invalid - * @throws IOException if an IO error occurs during copying - * @throws IOException if the output file length is not the same as the input file length after the copy completes - */ - public static void copyFile(final File srcFile, final File destFile) throws IOException { - copyFile(srcFile, destFile, true); - } - - public static void copyFileToDirectory(final File srcFile, final File destDir) throws IOException { - copyFileToDirectory(srcFile, destDir, true); - } - - public static void copyFileToDirectory(final File srcFile, final File destDir, final boolean preserveFileDate) - throws IOException { - if (destDir == null) { - throw new NullPointerException("Destination must not be null"); - } - if (destDir.exists() && !destDir.isDirectory()) { - throw new IllegalArgumentException(StringUtils.format("Destination [destDir:{}] is not a directory", destDir)); - } - final File destFile = new File(destDir, srcFile.getName()); - copyFile(srcFile, destFile, preserveFileDate); - } - /** * Copies a file to a new location. *
@@ -293,14 +253,12 @@ public abstract class FileUtils { * * @param srcFile an existing file to copy, must not be {@code null} * @param destFile the new file, must not be {@code null} - * @param preserveFileDate true if the file date of the copy * should be the same as the original * @throws IOException if source or destination is invalid * @throws IOException if an IO error occurs during copying * @throws IOException if the output file length is not the same as the input file length after the copy completes */ - public static void copyFile(final File srcFile, final File destFile, - final boolean preserveFileDate) throws IOException { + public static void copyFile(final File srcFile, final File destFile) throws IOException { checkFileRequirements(srcFile, destFile); if (srcFile.isDirectory()) { throw new IOException(StringUtils.format("Source [srcFile:{}] exists but is a directory", srcFile)); @@ -317,7 +275,29 @@ public abstract class FileUtils { if (destFile.exists() && !destFile.canWrite()) { throw new IOException(StringUtils.format("Destination [destFile:{}] exists but is read-only", destFile)); } - doCopyFile(srcFile, destFile, preserveFileDate); + doCopyFile(srcFile, destFile); + } + + public static void copyFileToDirectory(final File srcFile, final File destDir) throws IOException { + if (destDir == null) { + throw new NullPointerException("Destination must not be null"); + } + if (destDir.exists() && !destDir.isDirectory()) { + throw new IllegalArgumentException(StringUtils.format("Destination [destDir:{}] is not a directory", destDir)); + } + final File destFile = new File(destDir, srcFile.getName()); + copyFile(srcFile, destFile); + } + + public static void copyDirectory(final File srcDir, final File destDir) throws IOException { + checkFileRequirements(srcDir, destDir); + if (!srcDir.isDirectory()) { + throw new IOException(StringUtils.format("Source [{}] exists but is not a directory", srcDir)); + } + if (srcDir.getCanonicalPath().equals(destDir.getCanonicalPath())) { + throw new IOException(StringUtils.format("Source [{}] and destination '" + destDir + "' are the same", srcDir)); + } + doCopyDirectory(srcDir, destDir); } /** @@ -349,15 +329,13 @@ public abstract class FileUtils { * * @param srcFile the validated source file, must not be {@code null} * @param destFile the validated destination file, must not be {@code null} - * @param preserveFileDate whether to preserve the file date * @throws IOException if an error occurs * @throws IOException if the output file length is not the same as the input file length after the * copy completes * @throws IllegalArgumentException "Negative size" if the file is truncated so that the size is less than the * position */ - private static void doCopyFile(final File srcFile, final File destFile, final boolean preserveFileDate) - throws IOException { + private static void doCopyFile(final File srcFile, final File destFile) throws IOException { if (destFile.exists() && destFile.isDirectory()) { throw new IOException(StringUtils.format("Destination [destFile:{}] exists but is a directory", destFile)); } @@ -393,8 +371,33 @@ public abstract class FileUtils { throw new IOException(StringUtils.format("Failed to copy full contents from [srcFile:{}] to [destFile:{}] Expected length:[srcLen:{}] Actual [dstLen:{}]" , srcFile, destFile, srcLen, dstLen)); } - if (preserveFileDate) { - destFile.setLastModified(srcFile.lastModified()); + } + + private static void doCopyDirectory(final File srcDir, final File destDir) throws IOException { + // recurse + final File[] srcFiles = srcDir.listFiles(); + if (srcFiles == null) { // null if abstract pathname does not denote a directory, or if an I/O error occurs + throw new IOException("Failed to list contents of " + srcDir); + } + if (destDir.exists()) { + if (!destDir.isDirectory()) { + throw new IOException(StringUtils.format("Destination [{}] exists but is not a directory", destDir)); + } + } else { + if (!destDir.mkdirs() && !destDir.isDirectory()) { + throw new IOException(StringUtils.format("Destination [{}] directory cannot be created", destDir)); + } + } + if (!destDir.canWrite()) { + throw new IOException(StringUtils.format("Destination [{}] cannot be written to", destDir)); + } + for (final File srcFile : srcFiles) { + final File dstFile = new File(destDir, srcFile.getName()); + if (srcFile.isDirectory()) { + doCopyDirectory(srcFile, dstFile); + } else { + doCopyFile(srcFile, dstFile); + } } } diff --git a/protocol/src/test/java/com/zfoo/protocol/util/FileUtilTesting.java b/protocol/src/test/java/com/zfoo/protocol/util/FileUtilTesting.java index c716123f..f8c4b4e2 100644 --- a/protocol/src/test/java/com/zfoo/protocol/util/FileUtilTesting.java +++ b/protocol/src/test/java/com/zfoo/protocol/util/FileUtilTesting.java @@ -79,4 +79,23 @@ public class FileUtilTesting { System.out.println(FileUtils.searchFileInProject("User")); } + @Test + public void copyFileTest() throws IOException { + var srcFile = new File("C:\\Users\\Administrator\\Desktop\\aaa\\aaa.txt"); + var destFile = new File("C:\\Users\\Administrator\\Desktop\\bbb\\bbb"); + FileUtils.copyFile(srcFile, destFile); + } + + @Test + public void copyFileToDirectoryTest() throws IOException { + var srcFile = new File("C:\\Users\\Administrator\\Desktop\\aaa\\aaa.txt"); + var destFile = new File("C:\\Users\\Administrator\\Desktop\\bbb\\"); + FileUtils.copyFileToDirectory(srcFile, destFile); + } + @Test + public void copyDirectoryTest() throws IOException { + var srcFile = new File("C:\\Users\\Administrator\\Desktop\\aaa"); + var destFile = new File("C:\\Users\\Administrator\\Desktop\\bbb"); + FileUtils.copyDirectory(srcFile, destFile); + } }