急急。是不是电脑的锅？ - 黑马程序员技术交流社区

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.IOException;
import java.io.InputStream;
public class copy2 {
/**
* 把某盘中的一个多层文件夹拷贝到某盘中。用高效的方法
*
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
File yuan = new File("e:\\qwer");
File mudi = new File("f:\\qwer");
copyfile(yuan,mudi);
}
private static void copyfile(File yuan, File mudi) throws IOException {
// TODO Auto-generated method stub
File[] file = yuan.listFiles();
for(File f : file){
//System.out.println(f);
/*File yuandir =yuan;
File mudidir = mudi;*/
if(f.isDirectory()){
File yuandir = new File(yuan+"\\"+f.getName());
File mudidir = new File(mudi+"\\"+f.getName());
copyfile(yuandir,mudidir);
}
else{
File yuanfile = new File(yuan+"\\"+f.getName());
File mudifile = new File(mudi+"\\"+f.getName());
mudi.mkdirs();
copyoi(yuanfile,mudifile);
}
}
}
private static void copyoi(File yuandir, File mudidir) throws IOException {
// TODO Auto-generated method stub
BufferedInputStream bufin = new BufferedInputStream(new FileInputStream(yuandir));
BufferedOutputStream bufou = new BufferedOutputStream(new FileOutputStream(mudidir));
byte[] buf = new byte[1024];
int line =0;
while((line = bufin.read(buf))!=-1){
bufou.write(buf,0,line);
bufou.flush();
}
bufin.close();
bufou.close();
}
}

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