2018-09-05 log不输出堆栈信息，写了个测试

    public static void main(String[] args) {


        try {

            throw new Exception();
        }catch (Throwable e){

            StackTraceElement[] stackTraceElements = new StackTraceElement[0];
            e.setStackTrace(stackTraceElements);
            
            logger.error(e.getMessage()，e);

        }