遞歸拷貝一個文件夾（java實現）

package yuqiao.basic;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class FloderDtoE {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			copyDirectory("D:\\xxxx","E:\\xxx");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	public static boolean copyDirectory(String sourceFile,String desFile) throws IOException{
		File source=new File(sourceFile);
		if(!source.exists())
		{
			System.out.println(source.getAbsolutePath()+"=======源文件不存在=======");
			return false;
		}
		File des=new File(desFile);
		if(!des.exists()){
			des.mkdirs();
		}
		File[] file=source.listFiles();
		FileInputStream input=null;
		FileOutputStream output=null;
		for(int i=0;i<file.length;i++)
		{
			try {
				if(file[i].isFile()){
					input=new FileInputStream(file[i]);
					output=new FileOutputStream(new File(desFile+"/"+file[i].getName()));
					byte[] b=new byte[1024];
					int len;
					while((len=input.read(b))!=-1){
						output.write(b,0,len);
					}
					input.close();
					output.flush();
					output.close();
					
				}else if(file[i].isDirectory()){
					copyDirectory(sourceFile+"/"+file[i].getName(),desFile+"/"+file[i].getName());
				}
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				return false;
			}
		}
		
			if(input!=null)input.close();
			if(output!=null)output.close();
		return true;
		
	}
	

}