Java 获取文件的基本信息

- 日理万妓 2022-07-13 13:52 221阅读 0赞

package testfile;
    
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.FileReader;
    import java.io.FileWriter;
    import java.io.FilenameFilter;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.io.ObjectInputStream;
    import java.io.ObjectOutputStream;
    import java.io.PrintStream;
    import java.io.PushbackReader;
    import java.io.RandomAccessFile;
    import java.nio.ByteBuffer;
    import java.nio.CharBuffer;
    import java.nio.MappedByteBuffer;
    import java.nio.channels.FileChannel;
    import java.nio.channels.FileChannel.MapMode;
    import java.nio.charset.Charset;
    import java.nio.charset.CharsetDecoder;
    import java.nio.charset.CharsetEncoder;
    import java.nio.file.FileStore;
    import java.nio.file.FileSystem;
    import java.nio.file.FileSystems;
    import java.nio.file.Files;
    import java.nio.file.Path;
    import java.nio.file.Paths;
    import java.nio.file.StandardWatchEventKinds;
    import java.nio.file.WatchEvent;
    import java.nio.file.WatchKey;
    import java.nio.file.WatchService;
    import java.nio.file.attribute.BasicFileAttributeView;
    import java.nio.file.attribute.BasicFileAttributes;
    import java.nio.file.attribute.FileOwnerAttributeView;
    import java.nio.file.attribute.UserDefinedFileAttributeView;
    import java.util.Date;
    import java.util.SortedMap;
    
    public class TestFile {
    
        /** * @param args */
        public static void main(String[] args) throws IOException{
    
                Path testPath = Paths.get("F:/download/test.txt");
                BasicFileAttributeView basicView = Files.
                        getFileAttributeView(testPath, BasicFileAttributeView.class);
                BasicFileAttributes basicFileAttributes = basicView.readAttributes();
    
                System.out.println("创建时间：" + new Date(basicFileAttributes.creationTime()
                        .toMillis()));
    
                System.out.println("最后访问时间：" + new Date(basicFileAttributes.
                        lastAccessTime().toMillis()));
    
                System.out.println("最后修改时间：" + new Date(basicFileAttributes.
                        lastModifiedTime().toMillis()));
    
                System.out.println("文件大小：" + basicFileAttributes.size());
    
                FileOwnerAttributeView ownerView = Files.getFileAttributeView(testPath, 
                        FileOwnerAttributeView.class);
    
                System.out.println("文件所有者：" + ownerView.getOwner());
    
    
        }
    
    
    }

来自《java疯狂讲义》