java复制目录代码，java复制目录,Java复制一个目录下所

java复制目录代码，java复制目录,Java复制一个目录下所

Java复制一个目录下所有的文件夹到另一个目录下

复制一个目录下所有的文件夹到另一个目录下

        import java.io.*;        import java.util.*;        private static File[] copyfoldersList = new File("C:\\Windows\\System32").listFiles();        for (int k = 0; k < copyfoldersList.length; k++) {            if (copyfoldersList[k].isDirectory()) {                LinkedList<String> copysourcepath = new LinkedList<String>(                        Arrays.asList(copyfoldersList[k].getAbsolutePath()));                LinkedList<String> copytargetpath = new LinkedList<String>(                        Arrays.asList("D:"+ File.separator+ copyfoldersList[k].getAbsolutePath().substring(copyfoldersList[k].getAbsolutePath().lastIndexOf(File.separator))));                while (copysourcepath.size() > 0) {                    (new File(copytargetpath.peek())).mkdirs();                    File folders = new File(copysourcepath.peek());                    String[] file = folders.list();                    File temp = null;                    for (int i = 0; i < file.length; i++) {                        if (copysourcepath.peek().endsWith(File.separator))                            temp = new File(copysourcepath.peek(), file[i]);                        else                            temp = new File(copysourcepath.peek(), file[i]);                        FileInputStream input = null;                        FileOutputStream output = null;                        if (temp.isFile()) {                            try {                                input = new FileInputStream(temp);                                output = new FileOutputStream(new File(copytargetpath.peek(), temp.getName().toString()));                                long filelength=input.length();                                long buffsize=filelength<10485760L?filelength:10485760L;                                byte[] b = new byte[buffsize];                                int len;                                while ((len = input.read(b)) != -1)                                    output.write(b, 0, len);                                output.flush();                            } catch (IOException e) {                                System.err.println("复制单个文件操作出错");                            } finally {                                try {                                    output.close();                                    input.close();                                } catch (IOException e) {                                }                            }                        } else if (temp.isDirectory()) {                            for (File f : temp.listFiles()) {                                if (f.isDirectory()) {                                    copysourcepath.add(f.getPath());                                    copytargetpath.add(copytargetpath.peek()                                            + File.separator + f.getName());                                } else if (f.isFile()) {                                    new File(copytargetpath.peek()+ File.separator+ temp.getName()).mkdirs();                                    FileInputStream input2 = null;                                    FileOutputStream output2 = null;                                    try {                                        input2 = new FileInputStream(f);                                        output2 = new FileOutputStream(copytargetpath.peek()+ File.separator+ temp.getName()+ File.separator+ f.getName());                                        long filelength=input2.length();                                        long buffsize=filelength<10485760L?filelength:10485760L;                                        byte[] b = new byte[buffsize];                                        int len;                                        while ((len = input2.read(b)) != -1)                                            output2.write(b, 0, len);                                        output2.flush();                                    } catch (IOException e) {                                        System.err.println("复制单个文件操作出错");                                    } finally {                                        try {                                            output2.close();                                            input2.close();                                        } catch (IOException e) {                                        }                                    }                                }                            }                        }                    }                    copysourcepath.removeFirst();                    copytargetpath.removeFirst();                }            }        }