首次提交：初始化项目代码

time/time_demo_1.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	// 字符串解析为时间对象
+	timeStr := "2026-06-03 20:08:09"
+	parsedTime, err := time.Parse("2006-01-02 15:04:05", timeStr)
+	if err != nil {
+		fmt.Println("解析失败:", err)
+		return
+	}
+	fmt.Println("解析后的时间:", parsedTime)
+
+	// 格式化输出
+	formattedTime := parsedTime.Format("2006年01月02日 15:04:05")
+	fmt.Println("格式化后的时间:", formattedTime)
+
+	// RFC3339 标准格式
+	rfc3339Time := parsedTime.Format(time.RFC3339)
+	fmt.Println("RFC3339格式:", rfc3339Time)
+
+	// Unix 时间戳互转
+	unixTimestamp := int64(1780918245)
+	fromUnix := time.Unix(unixTimestamp, 0)
+	fmt.Println("从时间戳解析:", fromUnix)
+
+	unixTs := parsedTime.Unix()
+	fmt.Println("转为时间戳:", unixTs)
+}

time/time_demo_2.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	now := time.Now()
+	fmt.Println("本地时间:", now)
+
+	// UTC 时区
+	utcLoc, _ := time.LoadLocation("UTC")
+	utcTime := now.In(utcLoc)
+	fmt.Println("UTC时间:", utcTime)
+
+	// 纽约时区
+	nyLoc, _ := time.LoadLocation("America/New_York")
+	nyTime := now.In(nyLoc)
+	fmt.Println("纽约时间:", nyTime)
+
+	// 时区偏移
+	_, offset := now.Zone()
+	fmt.Printf("本地时区偏移: %d 小时\n", offset/3600)
+
+	// 固定偏移时区（不依赖IANA数据）
+	estLoc := time.FixedZone("EST", -5*3600)
+	estTime := now.In(estLoc)
+	fmt.Println("EST时间 (FixedZone):", estTime)
+}

time/time_demo_3.go

@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	fmt.Println("等待 1 秒...")
+	timer := time.NewTimer(1 * time.Second)
+	defer timer.Stop()
+
+	<-timer.C
+	fmt.Println("Timer 触发")
+
+	// 超时控制
+	done := make(chan bool)
+	go func() {
+		time.Sleep(2 * time.Second)
+		done <- true
+	}()
+
+	select {
+	case <-done:
+		fmt.Println("任务完成")
+	case <-time.After(1 * time.Second):
+		fmt.Println("任务超时")
+	}
+}

time/time_demo_4.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	ticker := time.NewTicker(500 * time.Millisecond)
+	defer ticker.Stop()
+	done := make(chan bool)
+	count := 0
+
+	go func() {
+		for {
+			select {
+			case t := <-ticker.C:
+				count++
+				fmt.Println("触发:", t.Format("15:04:05"))
+				if count >= 5 {
+					done <- true
+					return
+				}
+			case <-done:
+				return
+			}
+		}
+	}()
+
+	<-done
+	fmt.Println("Ticker 已停止")
+}

time/time_demo_5.go

@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	base := time.Date(2026, 6, 3, 18, 30, 45, 0, time.UTC)
+
+	// 加减
+	oneDayLater := base.Add(24 * time.Hour)
+	oneHourBefore := base.Add(-time.Hour)
+
+	// 输出使用变量，解决未使用报错
+	fmt.Println("基准时间:", base)
+	fmt.Println("加一天后:", oneDayLater)
+	fmt.Println("减一小时后:", oneHourBefore)
+
+	// 差值
+	diff := oneDayLater.Sub(base)
+	fmt.Println("时间差:", diff)
+
+	// 截断 & 舍入
+	trunc := base.Truncate(time.Hour)
+	round := base.Round(time.Minute)
+
+	fmt.Println("截断到小时:", trunc)
+	fmt.Println("四舍五入到分钟:", round)
+}

time/time_demo_6.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	t1 := time.Date(2026, 6, 3, 18, 30, 0, 0, time.UTC)
+	t2 := time.Date(2026, 6, 3, 18, 31, 0, 0, time.UTC)
+
+	fmt.Println("t1 在 t2 前:", t1.Before(t2))
+	fmt.Println("t2 在 t1 后:", t2.After(t1))
+	fmt.Println("t1 == t2:", t1.Equal(t2))
+
+	// 跨时区比较（同一时刻）
+	utc, _ := time.LoadLocation("UTC")
+	cn, _ := time.LoadLocation("Asia/Shanghai")
+
+	timeUTC := time.Date(2026, 6, 3, 10, 0, 0, 0, utc)
+	timeCN := time.Date(2026, 6, 3, 18, 0, 0, 0, cn)
+
+	fmt.Println("是否同一时刻:", timeUTC.Equal(timeCN)) // true
+}

time/time_demo_7.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+func main() {
+	// 仅日期
+	dateOnly, _ := time.Parse("2006-01-02", "2026-06-03")
+	fmt.Println("仅日期:", dateOnly)
+
+	// 带纳秒
+	nanos, _ := time.Parse("2006-01-02 15:04:05.999999999", "2026-06-03 18:30:45.123456789")
+	fmt.Println("带纳秒:", nanos)
+
+	// 带时区解析
+	tzTime, _ := time.ParseInLocation("2006-01-02 15:04:05 MST", "2026-06-03 18:30:45 CST", time.Local)
+	fmt.Println("带时区解析:", tzTime)
+}