- 使用标准库log输出日志:
package main
import (
"log"
)
func main() {
log.Println("This is a log message")
}
- 使用file包将日志输出到文件:
package main
import (
"log"
"os"
)
func main() {
file, err := os.OpenFile("logfile.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
if err != nil {
log.Fatal(err)
}
defer file.Close()
logger := log.New(file, "", log.LstdFlags)
logger.Println("This is a log message")
}
- 使用file-rotate包实现日志轮转:
package main
import (
"github.com/lestrrat-go/file-rotatelogs"
"log"
"time"
)
func main() {
rotateLogs, err := rotatelogs.New(
"/var/log/app.log.%Y%m%d%H%M",
rotatelogs.WithLinkName("/var/log/app.log"),
rotatelogs.WithMaxAge(time.Hour*24),
rotatelogs.WithRotationTime(time.Hour),
)
if err != nil {
panic(err)
}
logger := log.New(rotateLogs, "", log.LstdFlags)
logger.Println("This is a log message")
}
以上三种方式都可以用于输出日志,具体选择哪一种取决于项目需求和个人偏好。




