文件夹的拷贝

 1 package com.IO;
 2 import java.io.*;
 3 public class CopyUtil {
 4     /**
 5      * 拷贝文件夹
 6      * @param src
 7      * @param dest
 8      */
 9     public static void copyDirectory(String srcPath,String destPath){//重载copyDirectory()方法
10         File src=new File(srcPath);
11         File dest=new File(destPath);
12         copyDirectory(src, dest);
13     }
14     public static void copyDirectory(File src,File dest){
15         if(src.isDirectory()){
16             dest=new File(dest,src.getName());//在dest目录下创建一个src同名的文件
17         }
18         copyDir(src, dest);
19     }
20     public static void copyDir(File src,File dest){
21         if(src.isDirectory()){
22             dest.mkdirs();
23             for(File file:src.listFiles()){
24                 copyDir(file, new File(dest,file.getName()));//重点！！
25             }
26         }else if(src.isFile()){
27             copyFile(src, dest);
28         }
29     }
30     /**
31      * 拷贝文件
32      * @param src
33      * @param dest
34      */
35     public static void copyFile(String srcPath,String destPath){
36         File src=new File(srcPath);
37         File dest=new File(destPath);
38         copyFile(src, dest);
39     }
40     public static void copyFile(File src,File dest){
41         BufferedInputStream bis=null;
42         BufferedOutputStream bos = null;
43         try {
44             bis = new BufferedInputStream(new FileInputStream(src));
45             bos = new BufferedOutputStream(new FileOutputStream(dest));
46             byte[] flush=new byte[1024];
47             int len=0;//实际获取的数据长度
48             while(-1!=(len=bis.read(flush))){
49                 bos.write(flush);//写入数据
50             }
51             bos.flush();
52         } catch (FileNotFoundException e) {
53             System.out.println("文件找不到");
54             e.printStackTrace();
55         } catch (IOException e) {
56             System.out.println("读取流失败");
57             e.printStackTrace();
58         }finally{
59             
60             try {
61                 if(null!=bos){
62                     bos.close();
63                 }
64                 if(null!=bis){
65                     bis.close();
66                 }
67             } catch (IOException e) {
68                 System.out.println("关闭流失败！");
69                 e.printStackTrace();
70             }
71             
72         }
73     }
74 }