Java 目录和文件的复制

1.复制一个目录及其子目录、文件到另外一个目录

//复制一个目录及其子目录、文件到另外一个目录

public void copyFolder(File src, File dest) throws IOException {

if (src.isDirectory()) {

if (!dest.exists()) {

dest.mkdir();

}

String files[] = src.list();

for (String file : files) {

File srcFile = new File(src, file);

File destFile = new File(dest, file);

// 递归复制

copyFolder(srcFile, destFile);

}

} else {

InputStream in = new FileInputStream(src);

OutputStream out = new FileOutputStream(dest);

byte[] buffer = new byte[1024];

int length;

while ((length = in.read(buffer)) > 0) {

out.write(buffer, 0, length);

}

in.close();

out.close();

}

}

1. private void copyFolder(File src, File dest) throws IOException {
2.  
   if (src.isDirectory()) {
3.  
   if (!dest.exists()) {
4.  
   dest.mkdir();
5.  
   }
6.  
   String files[] = src.list();
7.  
   for (String file : files) {
8.  
   File srcFile = new File(src, file);
9.  
   File destFile = new File(dest, file);
10.  
    // 递归复制
11.  
    copyFolder(srcFile, destFile);
12.  
    }
13.  
    } else {
14.  
    InputStream in = new FileInputStream(src);
15.  
    OutputStream out = new FileOutputStream(dest);
16.  
     
17.  
    byte[] buffer = new byte[1024];
18.  
     
19.  
    int length;
20.  
     
21.  
    while ((length = in.read(buffer)) > 0) {
22.  
    out.write(buffer, 0, length);
23.  
    }
24.  
    in.close();
25.  
    out.close();
26.  
    }
27.  
    }