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log4g

在项目如何中使用呢?

如果要把日志输出到文件

只要一步那就是初始化log4g
在项目启动时初始化

添加一行以下代码即可

log4g.Init(
    Config{
    		Stdout:true 1
    		Path: "logs", //2 
    		NameSpace:"knowing",//3 
    	},
)

//记录一般日志
log4g.Info("hjhjhjhj") ; //

//记录错误日志
log4g.Error("hjhjhjhj") ;//

result:=map[int]string{1:"a",2:"v"}

//记录一般日志并且格式化,%s 表示 会替代为字符串,%+v 表示将变量以json形式打印
log4g.InfoFormat("info %s,%+v","ss",result);
//记录错误日志并且格式化,%s 表示 会替代为字符串,%+v 表示将变量以json形式打印
log4g.ErrorFormat("error %s,%+v","ss",result)
  1. 日志是否控制台输出
    1.1 当为true 时会同时在控制台输出
    1.2 当为false 只会在文件中输出

  2. 日志文件存放的目录
    2.1 如果要输出到文件 这个参数必须配置
    如果只是打印到控制台则不配置,不配置些参数时如同fmt.Println功能一样,只做控制台打印

  3. 日志文件所存放的空间,如果配置,会生成 Path+NameSpace 的两级目录
    如上配置 会生成logs/knowing/目录

4.与gin 框架结合

   log4g.Init(log4g.Config{Path:"logs",Stdout:true})
   gin.DefaultWriter = log4g.InfoLog
   gin.DefaultErrorWriter = log4g.ErrorLog

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