golang log4go 使用说明及丢失日志原因

1. 描述

log4golog4goJavalog4j

仓库地址：

https://github.com/jeanphorn/log4go.git

2. 特点

json

3. 使用示例

1. 下载源码

go get github.com/jeanphorn/log4go

2. 导入进工程

import log "github.com/jeanphorn/log4go"

3. 具体步骤，请查看

https://github.com/jeanphorn/log4go

4. 不用配置文件使用

log

package mainimport (l4g "github.com/jeanphorn/log4go"
)var (Log l4g.Logger = make(l4g.Logger)
)func InitLog(filename string) {_, err := os.Stat("./log/")if  os.IsNotExist(err) {os.Mkdir("./log/", 0755)}flw := l4g.NewFileLogWriter("./log/"+filename, false, false)flw.SetFormat("[%D %T] [%L] (%S) %M")flw.SetRotate(true)flw.SetRotateSize(1 * 1024 * 1024) // 10Mflw.SetRotateMaxBackup(10)         // 备份的日志文件数量flw.SetRotateDaily(false)	// 不按天回滚flw.SetSanitize(true)Log.AddFilter("file", l4g.INFO, flw)Log.Info("Log init done")time.Sleep(100 * time.Microsecond)
}func main() {InitLog("test.log")Log.Info("this is info")
}

但是运行之后，log 文件中没有日志打印，原因是：

log4gochannelgoroutinegoroutinegoroutinechannel

5. 解决方法

time.Sleep(time.Microsecond)sleep()goroutine

func main() {InitLog("test.log")Log.Error("this is error")time.Sleep(100 * time.Microsecond)Log.Info("this is info")time.Sleep(100 * time.Microsecond)
}

6. 其它 log 库

1. https://github.com/hhkbp2/go-logging.git
2. https://github.com/cihub/seelog

参考：

1. https://stackoverrun.com/cn/q/3852638
2. https://www.v2ex.com/amp/t/239039