50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package main
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import (
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"fmt"
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"log"
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"time"
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)
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func TzStrToOffset(ianaZone string) (string, error) {
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loc, err := time.LoadLocation(ianaZone)
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if err != nil {
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return "", fmt.Errorf("无法加载时区 %s: %v", ianaZone, err)
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}
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t := time.Date(2025, time.October, 28, 0, 0, 0, 0, loc)
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_, offsetSeconds := t.Zone()
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offset := time.Duration(offsetSeconds) * time.Second
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// 格式化偏移量。time.Time.Format() 无法直接将 Location 格式化成 UTC+HH:MM，
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// 因此我们需要手动计算并格式化。
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sign := "+"
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if offsetSeconds < 0 {
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sign = "-"
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offset = -offset // 确保偏移量为正值进行计算
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}
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hours := int(offset.Hours())
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minutes := int(offset.Minutes()) % 60
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// 最终的格式化字符串
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utcOffsetString := fmt.Sprintf("%s%02d%02d", sign, hours, minutes)
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return utcOffsetString, nil
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}
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func main() {
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ianaZone := "Asia/Shanghai"
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ianaZone = "UTC"
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utcOffsetString, err := TzStrToOffset(ianaZone)
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if err != nil {
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log.Fatalf("错误: %v", err)
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}
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fmt.Printf("IANA 时区: %s\n", ianaZone)
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fmt.Printf("UTC 偏移量: %s\n", utcOffsetString)
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}
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