WooYun.org

String fileid = "Ewv";
    String readonly = "";
    boolean isCreate = false;
    if(StringHelper.isEmpty(fileName)) {
    	Date ndate = new Date();
    	SimpleDateFormat sf = new SimpleDateFormat("yyyyMMddHHmmss");
    	String datetime = sf.format(ndate);
    	fileid = fileid + datetime;
    	fileName= fileid + "." + filetype;
    	isCreate = true;
    } else {
        int pointIndex = fileName.indexOf(".");
        if(pointIndex > -1) {
            fileid = fileName.substring(0,pointIndex);
        }
        
    }