public String getWritedFileInfo(String key){
		if(_iwidth == null)return null;
		if(key.equals("x-upyun-width"))return _iwidth;
		if(key.equals("x-upyun-height"))return _iheight;
		if(key.equals("x-upyun-frames"))return _iframes;
		if(key.equals("x-upyun-file-type"))return _itype;
		return null;
	}