将日期时间从 javascript 客户端发送到 ASP.NET 核心到 SQL 服务器时出现问题

Question

我从 JS 开始：

var startDate = new Date("Thu Nov 19 2020 00:00:01 GMT+1100 (Australian Eastern Daylight Time)");
var unixStartDate = startDate.getTime(); // 1605704401000

var endDate = new Date("Thu Nov 19 2020 23:59:59 GMT+1100 (Australian Eastern Daylight Time)");
var unixEndtDate = endDate.getTime(); // 1605790799000

我现在将 unixStartDate unixEndtDate 发送到我的 .NET5 EF 核心服务器 在同一台机器上 作为 JS 客户端和 SQL我所在的服务器：

var startDateUTC = DateTimeOffset.FromUnixTimeMilliseconds(unixStartDate); 
var startDateStr = startDateUTC.ToString(); // {18-Nov-20 1:00:01 PM +00:00}

var endDateUTC = DateTimeOffset.FromUnixTimeMilliseconds(unixEndDate); 
var endDateStr = endDateUTC.ToString(); // {19-Nov-20 12:59:59 PM +00:00}

dbc.SystemLogs
  .Where(v => startDateUTC <= v.LogTime)
  .Where(v => v.LogTime <= endDateUTC)
  .ToList()

在我的 EF 日志中，我看到：

Executed DbCommand (947ms) [Parameters=[@__startDateUTC_1='2020-11-18T13:00:01.0000000+00:00' (Nullable = true), @__endDateUTC_2='2020-11-19T12:59:59.0000000+00:00' (Nullable = true)], CommandType='Text', CommandTimeout='30']
      SELECT [s].[LogText], [s].[LogTime]
      FROM [SystemLog] AS [s]
      WHERE (@__startDateUTC_1 <= CAST([s].[LogTime] AS datetimeoffset))) AND (CAST([s].[LogTime] AS datetimeoffset) <= @__endDateUTC_2)

请注意，SQL服务器

上的 LogTime 类型为 datetime 但是我得到的结果来自错误的日期：

{SystemLog { LogTime = 18-Nov-20 4:13:36 PM, LogText = User Session Expired. }} 
{SystemLog { LogTime = 18-Nov-20 4:10:47 PM, LogText = User Login Success. }}

那是我从 11 月 18 日而不是 11 月 19 日得到的结果我在这里错过了什么？

我也试过：

DateTimeOffset startDate = TimeZoneInfo.ConvertTime(startDateUTC, TimeZoneInfo.Local);
DateTimeOffset endDate = TimeZoneInfo.ConvertTime(endDateUTC, TimeZoneInfo.Local);

dbc.SystemLogs
  .Where(v => startDate <= v.LogTime)
  .Where(v => v.LogTime <= endDate)
  .ToList()

然后运行相同的查询。我看到了：

Executed DbCommand (947ms) [Parameters=[@__startDateUTC_1='2020-11-19T00:00:01.0000000+11:00' (Nullable = true), @__endDateUTC_2='2020-11-19T23:59:59.0000000+11:00' (Nullable = true)], CommandType='Text', CommandTimeout='30']
      SELECT [s].[LogText], [s].[LogTime]
      FROM [SystemLog] AS [s]
      WHERE (@__startDateUTC_1 <= CAST([s].[LogTime] AS datetimeoffset))) AND (CAST([s].[LogTime] AS datetimeoffset) <= @__endDateUTC_2)

但我得到了同样错误的结果

Answer 1

好的，问题是我需要 DateTime 而不是 DateTimeOffset 来查询 SQLserver，因为字段类型是 DateTime.

所以这就是全部工作：

JS 客户端：

var startDate = new Date("Thu Nov 19 2020 00:00:01 GMT+1100 (Australian Eastern Daylight Time)");
var unixStartDate = startDate.getTime(); // 1605704401000

var endDate = new Date("Thu Nov 19 2020 23:59:59 GMT+1100 (Australian Eastern Daylight Time)");
var unixEndtDate = endDate.getTime(); // 1605790799000

.NET 核心服务器：

namespace System {
  public static class UnixTime {
    static public DateTime ToLocalDateTime(long unixTimeMs) {
      return DateTimeOffset.FromUnixTimeMilliseconds(unixTimeMs).LocalDateTime;
    }
  }
}

DateTime startDate = UnixTime.ToLocalDateTime(unixStartDate);
DateTime endDate = UnixTime.ToLocalDateTime(unixEndDate);

dbc.SystemLogs.Where(v => startDate <= v.LogTime && v => v.LogTime <= endDate)

将日期时间从 javascript 客户端发送到 ASP.NET 核心到 SQL 服务器时出现问题

Problems sending datetime from javascript client to ASP.NET core to SQL server

javascript

c#

asp.net-core

datetimeoffset