复制一个目录下所有的文件夹到另一个目录下，一个目录另一个,import java.

复制一个目录下所有的文件夹到另一个目录下，一个目录另一个,import java.

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();        }    }}//该片段来自于http://byrx.net