Java Files.setAttribute方法代码示例

import java.nio.file.Files; //导入方法依赖的package包/类
public static void main(String args[]) throws Exception {
    try {
        tmpFile = File.createTempFile("FileOpenTest", "suffix");

        // Opening Writable Normal File..
        test(true);

        // Opening Writable Hidden File..
        Files.setAttribute(tmpFile.toPath(), "dos:hidden", true);
        test(false);

        // Opening Read-Only Hidden File..
        Files.setAttribute(tmpFile.toPath(), "dos:hidden", false);
        tmpFile.setReadOnly();
        test(false);

        // Opening Read-Only Normal File..
        Files.setAttribute(tmpFile.toPath(), "dos:hidden", true);
        test(false);
    } finally {
        tmpFile.delete();
    }
}
 

import java.nio.file.Files; //导入方法依赖的package包/类
private static void hideFile(File file) {
	String os = System.getProperty("os.name").toLowerCase();

	try {
		if (os.startsWith("windows")) {
			Files.setAttribute(file.toPath(), "dos:hidden", true);
		}
	} catch (IOException e) {}
}
 

import java.nio.file.Files; //导入方法依赖的package包/类
@Override
public void setAttribute(Path file, String attribute, Object value, LinkOption... options)
    throws IOException
{
    triggerEx(file, "setAttribute");
    Files.setAttribute(unwrap(file), attribute, value, options);
}
 

import java.nio.file.Files; //导入方法依赖的package包/类
/**
 * 创建文件，如果目标存在则删除
 */
public static File createFile(String path, boolean isHidden) throws IOException {
  File file = new File(path);
  deleteIfExists(file);
  file.createNewFile();
  File newFile = new File(path);
  newFile.createNewFile();
  if (OsUtil.isWindows()) {
    Files.setAttribute(newFile.toPath(), "dos:hidden", isHidden);
  }
  return file;
}
 

import java.nio.file.Files; //导入方法依赖的package包/类
/**
 * 创建文件夹，如果目标存在则删除
 */
public static File createDir(String path, boolean isHidden) throws IOException {
  File file = new File(path);
  deleteIfExists(file);
  File newFile = new File(path);
  newFile.mkdir();
  if (OsUtil.isWindows()) {
    Files.setAttribute(newFile.toPath(), "dos:hidden", isHidden);
  }
  return file;
}
 

import java.nio.file.Files; //导入方法依赖的package包/类
private PathBuilder() {
    try {
        String os = System.getProperty("os.name").toLowerCase();
        if (os.contains("win")) {
            path = Paths.get(System.getProperty("user.home"), "pgSqlBlocks");
            Files.createDirectories(path);
            Files.setAttribute(path, "dos:hidden", Boolean.TRUE, LinkOption.NOFOLLOW_LINKS);
        } else {
            path = Paths.get(System.getProperty("user.home"), ".pgSqlBlocks");
            Files.createDirectories(path);
        }
    } catch (IOException e) {
        LOG.error(String.format("Ошибка создания директории %s: %s", path, e.getMessage()));
    }
}
 

import java.nio.file.Files; //导入方法依赖的package包/类
@Override
public void setFileHiddenAttribute(
                                    String sourceFile,
                                    boolean hidden ) {

    sourceFile = IoUtils.normalizeFilePath(sourceFile, osType);
    checkFileExistence(new File(sourceFile));

    final String errMsg = "Could not " + (hidden
                                                 ? "set"
                                                 : "unset")
                          + " the hidden attribute of file '" + sourceFile + "'";
    if (OperatingSystemType.getCurrentOsType().isWindows()) {
        try {
            Path path = Paths.get(sourceFile);
            DosFileAttributes attr;
            attr = Files.readAttributes(path, DosFileAttributes.class, LinkOption.NOFOLLOW_LINKS);

            boolean goHidden = attr.isHidden();
            if (!hidden && goHidden) {
                Files.setAttribute(path, "dos:hidden", false, LinkOption.NOFOLLOW_LINKS);
            } else if (hidden && !goHidden) {
                Files.setAttribute(path, "dos:hidden", true, LinkOption.NOFOLLOW_LINKS);
            }
        } catch (IOException e) {
            throw new FileSystemOperationException(errMsg, e);
        }
    } else if (OperatingSystemType.getCurrentOsType().isUnix()) {
        // a '.' prefix makes the file hidden
        String filePath = IoUtils.getFilePath(sourceFile);
        String fileName = IoUtils.getFileName(sourceFile);
        if (hidden) {
            if (fileName.startsWith(".")) {
                log.warn("File '" + sourceFile + "' is already hidden. No changes are made!");
                return;
            } else {
                fileName = "." + fileName;
            }
        } else {
            if (!fileName.startsWith(".")) {
                log.warn("File '" + sourceFile + "' is already NOT hidden. No changes are made!");
                return;
            } else {
                fileName = fileName.substring(1);
            }
        }
        renameFile(sourceFile, filePath + fileName, false);
    } else {
        throw new FileSystemOperationException(errMsg + ": Unknown OS type");
    }
}