53 lines
1.8 KiB
C#
53 lines
1.8 KiB
C#
namespace LMS.Common.Extensions
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{
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public class BeijingTimeExtension
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{
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/// <summary>
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/// 获取北京时间，将时区转换为北京时间
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/// </summary>
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/// <returns></returns>
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public static DateTime GetBeijingTime()
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{
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return TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow,
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TimeZoneInfo.FindSystemTimeZoneById("China Standard Time"));
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}
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/// <summary>
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/// 智能转换时间为北京时间
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/// 如果是UTC时间则转换，否则直接返回
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/// </summary>
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/// <param name="dateTime">输入的时间</param>
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/// <returns>北京时间</returns>
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public static DateTime TransferUtcToBeijingTime(DateTime dateTime)
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{
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// 只有UTC时间才需要转换
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if (dateTime.Kind == DateTimeKind.Utc)
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{
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try
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{
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// 优先使用系统时区信息
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return TimeZoneInfo.ConvertTimeFromUtc(dateTime,
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TimeZoneInfo.FindSystemTimeZoneById("China Standard Time"));
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}
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catch (TimeZoneNotFoundException)
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{
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try
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{
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// Linux系统可能使用这个ID
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return TimeZoneInfo.ConvertTimeFromUtc(dateTime,
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TimeZoneInfo.FindSystemTimeZoneById("Asia/Shanghai"));
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}
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catch (TimeZoneNotFoundException)
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{
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// 找不到时区就手动加8小时
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return dateTime.AddHours(8);
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}
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}
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}
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// 非UTC时间直接返回
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return dateTime;
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}
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}
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}
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