本文整理汇总了Java中java.nio.file.Files.newDirectoryStream方法的典型用法代码示例。如果您正苦于以下问题:Java Files.newDirectoryStream方法的具体用法?Java Files.newDirectoryStream怎么用?Java Files.newDirectoryStream使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.nio.file.Files
的用法示例。
在下文中一共展示了Files.newDirectoryStream方法的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: findImageFileWithExtension
import java.nio.file.Files; //导入方法依赖的package包/类
private Path findImageFileWithExtension(Path dir, String ext) {
Path file = null;
try (DirectoryStream<Path> dirStream = Files.newDirectoryStream(dir, "*." + ext)) {
Iterator<Path> imageIter = dirStream.iterator();
if (!imageIter.hasNext()) {
throw new IllegalStateException("No " + ext + " image file in " + dir);
}
file = imageIter.next();
if (imageIter.hasNext()) {
throw new IllegalStateException("Multiple " + ext + " image files in " + dir);
}
} catch (IOException e) {
throw new IllegalStateException("Error finding " + ext + " image file in " + dir, e);
}
if (!readablePredicate().test(file)) {
throw new IllegalStateException("Image file is not not readable: " + file);
}
return file;
}
示例2: deleteRecursivelyInsecure
import java.nio.file.Files; //导入方法依赖的package包/类
/**
* Insecure recursive delete for file systems that don't support {@code SecureDirectoryStream}.
* Returns a collection of exceptions that occurred or null if no exceptions were thrown.
*/
@Nullable
private static Collection<IOException> deleteRecursivelyInsecure(Path path) {
Collection<IOException> exceptions = null;
try {
if (Files.isDirectory(path, NOFOLLOW_LINKS)) {
try (DirectoryStream<Path> stream = Files.newDirectoryStream(path)) {
exceptions = deleteDirectoryContentsInsecure(stream);
}
}
// If exceptions is not null, something went wrong trying to delete the contents of the
// directory, so we shouldn't try to delete the directory as it will probably fail.
if (exceptions == null) {
Files.delete(path);
}
return exceptions;
} catch (IOException e) {
return addException(exceptions, e);
}
}
示例3: ensureNoPre019State
import java.nio.file.Files; //导入方法依赖的package包/类
/**
* Throws an IAE if a pre 0.19 state is detected
*/
private void ensureNoPre019State() throws Exception {
for (Path dataLocation : nodeEnv.nodeDataPaths()) {
final Path stateLocation = dataLocation.resolve(MetaDataStateFormat.STATE_DIR_NAME);
if (!Files.exists(stateLocation)) {
continue;
}
try (DirectoryStream<Path> stream = Files.newDirectoryStream(stateLocation)) {
for (Path stateFile : stream) {
if (logger.isTraceEnabled()) {
logger.trace("[upgrade]: processing [{}]", stateFile.getFileName());
}
final String name = stateFile.getFileName().toString();
if (name.startsWith("metadata-")) {
throw new IllegalStateException("Detected pre 0.19 metadata file please upgrade to a version before "
+ Version.CURRENT.minimumCompatibilityVersion()
+ " first to upgrade state structures - metadata found: [" + stateFile.getParent().toAbsolutePath());
}
}
}
}
}
示例4: children
import java.nio.file.Files; //导入方法依赖的package包/类
@Override
public String[] children(String f) {
Path p = getPath(f);
try (DirectoryStream<Path> dir = Files.newDirectoryStream(p)){
java.util.List<String> result = new ArrayList<>();
for (Path child : dir) {
String name = child.getName(child.getNameCount() - 1).toString();
if (name.endsWith("/"))
name = name.substring(0, name.length() - 1);
result.add(name);
}
return result.toArray(new String[result.size()]);
} catch (IOException ex) {
return new String[0]; //huh?
}
}
示例5: findJsonSpec
import java.nio.file.Files; //导入方法依赖的package包/类
/**
* Returns the json files found within the directory provided as argument.
* Files are looked up in the classpath, or optionally from {@code fileSystem} if its not null.
*/
public static Set<Path> findJsonSpec(FileSystem fileSystem, String optionalPathPrefix, String path) throws IOException {
Path dir = resolveFile(fileSystem, optionalPathPrefix, path, null);
if (!Files.isDirectory(dir)) {
throw new NotDirectoryException(path);
}
Set<Path> jsonFiles = new HashSet<>();
try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
for (Path item : stream) {
if (item.toString().endsWith(JSON_SUFFIX)) {
jsonFiles.add(item);
}
}
}
if (jsonFiles.isEmpty()) {
throw new NoSuchFileException(path, null, "no json files found");
}
return jsonFiles;
}
示例6: installCertificates
import java.nio.file.Files; //导入方法依赖的package包/类
private void installCertificates(Path path, KeyStore keyStore)
throws IOException, CertificateException {
CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
try (DirectoryStream<Path> paths = Files.newDirectoryStream(path, "*.{crt,pem}")) {
for (Path certPath : paths) {
logger.info("installing cert from path {}", certPath.toRealPath());
if (Files.isRegularFile(certPath)) {
try (InputStream inputStream = Files.newInputStream(certPath)) {
Certificate cert = certificateFactory.generateCertificate(inputStream);
String alias = certPath.getFileName().toString();
keyStore.setCertificateEntry(alias, cert);
logger.info("ok, installed cert with alias {} from path {}", alias,
certPath.toRealPath());
} catch (Exception e) {
logger.warn("error, skipping cert, path {} {}", certPath.toRealPath(), e.getMessage());
}
} else {
logger.info("skipping cert, not a regular file {}", certPath.toRealPath());
}
}
}
}
示例7: PollingWatchKey
import java.nio.file.Files; //导入方法依赖的package包/类
PollingWatchKey(Path dir, PollingWatchService watcher, Object fileKey)
throws IOException
{
super(dir, watcher);
this.fileKey = fileKey;
this.valid = true;
this.tickCount = 0;
this.entries = new HashMap<Path,CacheEntry>();
// get the initial entries in the directory
try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir)) {
for (Path entry: stream) {
// don't follow links
long lastModified =
Files.getLastModifiedTime(entry, LinkOption.NOFOLLOW_LINKS).toMillis();
entries.put(entry.getFileName(), new CacheEntry(lastModified, tickCount));
}
} catch (DirectoryIteratorException e) {
throw e.getCause();
}
}
示例8: getClassPaths
import java.nio.file.Files; //导入方法依赖的package包/类
private List<Path> getClassPaths(String cpaths) {
if (cpaths.isEmpty()) {
return Collections.emptyList();
}
List<Path> paths = new ArrayList<>();
for (String p : cpaths.split(File.pathSeparator)) {
if (p.length() > 0) {
// wildcard to parse all JAR files e.g. -classpath dir/*
int i = p.lastIndexOf(".*");
if (i > 0) {
Path dir = Paths.get(p.substring(0, i));
try (DirectoryStream<Path> stream = Files.newDirectoryStream(dir, "*.jar")) {
for (Path entry : stream) {
paths.add(entry);
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
} else {
paths.add(Paths.get(p));
}
}
}
return paths;
}
示例9: loadFonts
import java.nio.file.Files; //导入方法依赖的package包/类
/** Load all fonts from 'assets/fonts'. **/
private void loadFonts() {
try (DirectoryStream<Path> directoryStream =
Files.newDirectoryStream(Main.getInstance().getPluginProxy().getAssetsDirPath().resolve("fonts"))) {
for (Path fontPath : directoryStream) {
if (fontPath.getFileName().toString().endsWith(".ttf")) {
Font.loadFont(Files.newInputStream(fontPath), 10);
}
}
} catch (IOException e) {
Main.log(e);
}
Balloon.setDefaultFont(Main.getProperties().getString("balloon.font"));
LocalFont.setDefaultFont(Main.getProperties().getString("interface.font"));
}
示例10: main
import java.nio.file.Files; //导入方法依赖的package包/类
public static void main(String[] args) throws IOException
{
Scanner input = new Scanner(System.in);
System.out.println("Enter file or directory name:");
// create Path object based on user input
Path path = Paths.get(input.nextLine());
if (Files.exists(path)) // if path exists, output info about it
{
// display file (or directory) information
System.out.printf("%n%s exists%n", path.getFileName());
System.out.printf("%s a directory%n",
Files.isDirectory(path) ? "Is" : "Is not");
System.out.printf("%s an absolute path%n",
path.isAbsolute() ? "Is" : "Is not");
System.out.printf("Last modified: %s%n",
Files.getLastModifiedTime(path));
System.out.printf("Size: %s%n", Files.size(path));
System.out.printf("Path: %s%n", path);
System.out.printf("Absolute path: %s%n", path.toAbsolutePath());
if (Files.isDirectory(path)) // output directory listing
{
System.out.printf("%nDirectory contents:%n");
// object for iterating through a directory's contents
DirectoryStream<Path> directoryStream =
Files.newDirectoryStream(path);
for (Path p : directoryStream)
System.out.println(p);
}
}
else // not file or directory, output error message
{
System.out.printf("%s does not exist%n", path);
}
}
示例11: loadDataFilesList
import java.nio.file.Files; //导入方法依赖的package包/类
public static List<String> loadDataFilesList(String prefix, Path bwcIndicesPath) throws IOException {
List<String> indexes = new ArrayList<>();
try (DirectoryStream<Path> stream = Files.newDirectoryStream(bwcIndicesPath, prefix + "-*.zip")) {
for (Path path : stream) {
indexes.add(path.getFileName().toString());
}
}
Collections.sort(indexes);
return indexes;
}
示例12: installConfig
import java.nio.file.Files; //导入方法依赖的package包/类
/**
* Copies the files from {@code tmpConfigDir} into {@code destConfigDir}.
* Any files existing in both the source and destination will be skipped.
*/
private void installConfig(PluginInfo info, Path tmpConfigDir, Path destConfigDir) throws Exception {
if (Files.isDirectory(tmpConfigDir) == false) {
throw new UserException(ExitCodes.IO_ERROR, "config in plugin " + info.getName() + " is not a directory");
}
Files.createDirectories(destConfigDir);
setFileAttributes(destConfigDir, CONFIG_DIR_PERMS);
final PosixFileAttributeView destConfigDirAttributesView =
Files.getFileAttributeView(destConfigDir.getParent(), PosixFileAttributeView.class);
final PosixFileAttributes destConfigDirAttributes =
destConfigDirAttributesView != null ? destConfigDirAttributesView.readAttributes() : null;
if (destConfigDirAttributes != null) {
setOwnerGroup(destConfigDir, destConfigDirAttributes);
}
try (DirectoryStream<Path> stream = Files.newDirectoryStream(tmpConfigDir)) {
for (Path srcFile : stream) {
if (Files.isDirectory(srcFile)) {
throw new UserException(ExitCodes.DATA_ERROR, "Directories not allowed in config dir for plugin " + info.getName());
}
Path destFile = destConfigDir.resolve(tmpConfigDir.relativize(srcFile));
if (Files.exists(destFile) == false) {
Files.copy(srcFile, destFile);
setFileAttributes(destFile, CONFIG_FILES_PERMS);
if (destConfigDirAttributes != null) {
setOwnerGroup(destFile, destConfigDirAttributes);
}
}
}
}
IOUtils.rm(tmpConfigDir); // clean up what we just copied
}
示例13: assertInstallCleaned
import java.nio.file.Files; //导入方法依赖的package包/类
void assertInstallCleaned(Environment env) throws IOException {
try (DirectoryStream<Path> stream = Files.newDirectoryStream(env.pluginsFile())) {
for (Path file : stream) {
if (file.getFileName().toString().startsWith(".installing")) {
fail("Installation dir still exists, " + file);
}
}
}
}
示例14: getModuleBundles
import java.nio.file.Files; //导入方法依赖的package包/类
static List<Bundle> getModuleBundles(Path modulesDirectory) throws IOException {
// damn leniency
if (Files.notExists(modulesDirectory)) {
return Collections.emptyList();
}
List<Bundle> bundles = new ArrayList<>();
try (DirectoryStream<Path> stream = Files.newDirectoryStream(modulesDirectory)) {
for (Path module : stream) {
if (FileSystemUtils.isHidden(module)) {
continue; // skip over .DS_Store etc
}
PluginInfo info = PluginInfo.readFromProperties(module);
if (!info.isJvm()) {
throw new IllegalStateException("modules must be jvm plugins: " + info);
}
if (!info.isIsolated()) {
throw new IllegalStateException("modules must be isolated: " + info);
}
Bundle bundle = new Bundle();
bundle.plugins.add(info);
// gather urls for jar files
try (DirectoryStream<Path> jarStream = Files.newDirectoryStream(module, "*.jar")) {
for (Path jar : jarStream) {
// normalize with toRealPath to get symlinks out of our hair
bundle.urls.add(jar.toRealPath().toUri().toURL());
}
}
bundles.add(bundle);
}
}
return bundles;
}
示例15: scan
import java.nio.file.Files; //导入方法依赖的package包/类
void scan(Path p) throws IOException {
if (Files.isDirectory(p)) {
for (Path c: Files.newDirectoryStream(p)) {
scan(c);
}
} else if (isTidyFile(p)) {
scan(Files.readAllLines(p, Charset.defaultCharset()));
}
}