ServiceClient format slow log 无法准确输出毫秒

[z3ronp]

private String formatSlowRequestLog(RequestMessage request, ResponseMessage response, long useTimesMs) { return String.format( "Request cost %d seconds, endpoint %s, resourcePath %s, " + "method %s, Date '%s', statusCode %d, requestId %s.", useTimesMs / 1000, request.getEndpoint(), request.getResourcePath(), request.getMethod(), request.getHeaders().get(HttpHeaders.DATE), response.getStatusCode(), response.getRequestId()); }
%d 输出 useTimesMs / 1000 输出的是取整后的秒，无法精确输出毫秒