1 public class CopyDir {
2
3 public static void main(String[] args) {
4 copyDir(new File("d:\\a"), new File("d:\\b"));
5 }
6
7
8 //file1为被复制目录， file2为目标目录
9 public static void copyDir(File file1 ,File file2) {
10 //目标目录不存在则创建
11 if(!file2.exists()) {
12 file2.mkdir();
13 }
14 //将源目录所有对象取出存入File[]数组中
15 File[] fList =file1.listFiles();
16 //遍历源目录
17 for (File f : fList) {
18 //当子对象为目录时在目标目录中创建此目录
19 if(f.isDirectory()) {
20 File file =new File(file2,f.getName());
21 file.mkdir();
22 //调用自己
23 copyDir(f, file);
24 }else if(f.isFile()) {
25 //当子对象为文件时用字节流读取并写入目标目录中（复制）
26 BufferedInputStream bis = null ;
27 BufferedOutputStream bos = null;
28 try {
29 bis = new BufferedInputStream(new FileInputStream(f));
30 bos = new BufferedOutputStream(new FileOutputStream(new File(file2,f.getName())));
31 int len = 0;
32 byte[] bytes = new byte[1024];
33 while((len = bis.read(bytes)) != -1) {
34 bos.write(bytes, 0, len);
35 }
36 } catch (IOException e) {
37 throw new RuntimeException("操作失败！");
38 }finally {
39 try {
40 bis.close();
41 bos.close();
42 } catch (IOException e) {
43 throw new RuntimeException("关闭失败！");
44 }
45 }
46 }
47 }
48 }
49 }
