文件的复制和删除

  /**
	 * 删除文件,通过文件的类型
	 * @param filePath
	 * @param type
	 */
	
	public static  void deleteType(String filePath,String type){
		File file = new File(filePath);
		if(!file.isDirectory())
			return;
		String[] list = file.list();
		if(list==null)
			return;
		for(int i=0;i<list.length;i++){
			File f = new File(file,list[i]);
			String panth = f.getPath();
			if(f.isDirectory()){
				deleteType(panth,type);
			}
			if(panth.endsWith(type)){
				System.out.println(f.getFreeSpace()+","+panth);
				//f.delete();
			}
		}
		file.delete();
	}


/**
	 * 复制文件
	 * @param fromFilepath
	 * @param toFilepath
	 */
	public static void copyFile(File fromFile,File tofile){
		if(tofile!=null&&tofile.isDirectory()){
			tofile = new File(tofile,fromFile!=null?fromFile.getName():"");
		}
		InputStream inputs =null;
		OutputStream output =null;
		try {
			inputs = new FileInputStream(fromFile);
			output = new FileOutputStream(tofile);
			byte[] b = new byte[1024];
			int len = inputs.read(b);
			while(len!=-1){
				output.write(b, 0, len);
				len = inputs.read(b);
			}
			//System.out.println("----------copy successful-------------");
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}
	
	/**
	 * 复制文件夹
	 * @param fromFilepath
	 * @param toFilepath
	 */
	public static void copyDir(String fromFilepath,String toFilepath){
		File fromFile = new File(fromFilepath);
		File toFile = new File(toFilepath);
		if(fromFile.isDirectory()&&flag){
			toFilepath = toFilepath+"/"+fromFile.getName();
			toFile = new File(toFilepath);
			if(!toFile.exists())
				toFile.mkdirs();
			flag = false;
		}
			
		String[] list = fromFile.list();
		if(list==null)
			return;
		for(int i=0;i<list.length;i++){
			File file = new File(fromFile,list[i]);
			
			
			if(file!=null&&file.isDirectory()){
				toFile = new File(toFilepath,list[i]);
				if(!toFile.exists())
					toFile.mkdirs();
				System.out.println("--------"+file.getPath()+"-------------i="+i+"----->"+list[i]);
				System.out.println("++++++++"+toFile.getPath()+"+++++++++++++");
				copyDir(file.getPath(),toFile.getPath());
				
			}else
				copyFile(file, toFile);
		}
		
	}