golang zap日志库使用 golang日志

1.安装zap

go get go.uber.org/zapgo get github.com/natefinch/lumberjack//日志文件分割包

2.基本使用

func main() { logger, _ := zap.NewProduction() //生产环境实例 defer logger.Sync()//将缓存中的日志同步到文件中url := "http://xiayuedu.com" logger.Info("info",//info级别的日志 zap.String("url",url), zap.Bool("bool",true), ) logger.Info("info", zap.Namespace("namespace-1"),//定义多级日志 zap.String("url",url),//使用对应的类型 zap.Bool("bool",true), ) logger.Info("info", zap.Namespace("namespace-2"), zap.String("url",url), zap.Bool("bool",true), ) logger.Error("password is error",//error级别 zap.String("username","zhangsan"), zap.String("password","123456"), ) logger.Debug("record user info",//debug级别 zap.String("username","zhangsan"), zap.String("password","123456"), )sugar := logger.Sugar()//使用非zap.xxxx类型进行输出，性能较低，非核心代码处可以使用 sugar.Info("sugar info",true,"123q342534",time.Second) sugar.Error("sugar info",true,"123q342534",time.Second) sugar.Debug("sugar info",true,"123q342534",time.Second) sugar.Warn("sugar info",true,"123q342534",time.Second)}

【golang zap日志库使用】输出结果

{"level":"info","ts":1627910714.8048513,"caller":"golangdemo/main.go:357","msg":"info","url":"http://xiayuedu.com","bool":true} {"level":"info","ts":1627910714.805827,"caller":"golangdemo/main.go:361","msg":"info","namespace-1":{"url":"http://xiayuedu.com","bool":true}} {"level":"info","ts":1627910714.806803,"caller":"golangdemo/main.go:366","msg":"info","namespace-2":{"url":"http://xiayuedu.com","bool":true}} {"level":"error","ts":1627910714.806803,"caller":"golangdemo/main.go:371","msg":"password is error","username":"zhangsan","password":"123456","stacktrace":"main.ma in\n\tC:/Users/admin/xiayuedu/golangdemo/main.go:371\nruntime.main\n\tC:/Program Files/Go/src/runtime/proc.go:203"} {"level":"info","ts":1627910714.8077793,"caller":"golangdemo/main.go:381","msg":"sugar infotrue123q3425341s"} {"level":"error","ts":1627910714.8077793,"caller":"golangdemo/main.go:382","msg":"sugar infotrue123q3425341s","stacktrace":"main.main\n\tC:/Users/admin/xiayuedu/go langdemo/main.go:382\nruntime.main\n\tC:/Program Files/Go/src/runtime/proc.go:203"} {"level":"warn","ts":1627910714.8087556,"caller":"golangdemo/main.go:384","msg":"sugar infotrue123q3425341s"}

3.定制化使用
拷贝来自https://www.jianshu.com/p/910...，大佬写的很不错很详细，可以满足生产使用

import ( "fmt" "github.com/natefinch/lumberjack" "go.uber.org/zap" "go.uber.org/zap/zapcore" "os" "net/http" )var log *zap.Loggerfunc main() { var coreArr []zapcore.Core//获取编码器 encoderConfig := zap.NewProductionEncoderConfig()//NewJSONEncoder()输出json格式，NewConsoleEncoder()输出普通文本格式 encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder//指定时间格式 encoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder//按级别显示不同颜色，不需要的话取值zapcore.CapitalLevelEncoder就可以了 //encoderConfig.EncodeCaller = zapcore.FullCallerEncoder//显示完整文件路径 encoder := zapcore.NewConsoleEncoder(encoderConfig)//日志级别 highPriority := zap.LevelEnablerFunc(func(lev zapcore.Level) bool{//error级别 return lev >= zap.ErrorLevel }) lowPriority := zap.LevelEnablerFunc(func(lev zapcore.Level) bool {//info和debug级别,debug级别是最低的 return lev < zap.ErrorLevel && lev >= zap.DebugLevel })//info文件writeSyncer infoFileWriteSyncer := zapcore.AddSync(&lumberjack.Logger{ Filename:"./log/info.log",//日志文件存放目录，如果文件夹不存在会自动创建 MaxSize:2,//文件大小限制,单位MB MaxBackups: 100,//最大保留日志文件数量 MaxAge:30,//日志文件保留天数 Compress:false,//是否压缩处理 }) infoFileCore := zapcore.NewCore(encoder, zapcore.NewMultiWriteSyncer(infoFileWriteSyncer,zapcore.AddSync(os.Stdout)), lowPriority) //第三个及之后的参数为写入文件的日志级别,ErrorLevel模式只记录error级别的日志 //error文件writeSyncer errorFileWriteSyncer := zapcore.AddSync(&lumberjack.Logger{ Filename:"./log/error.log",//日志文件存放目录 MaxSize:1,//文件大小限制,单位MB MaxBackups: 5,//最大保留日志文件数量 MaxAge:30,//日志文件保留天数 Compress:false,//是否压缩处理 }) errorFileCore := zapcore.NewCore(encoder, zapcore.NewMultiWriteSyncer(errorFileWriteSyncer,zapcore.AddSync(os.Stdout)), highPriority) //第三个及之后的参数为写入文件的日志级别,ErrorLevel模式只记录error级别的日志coreArr = append(coreArr, infoFileCore) coreArr = append(coreArr, errorFileCore) log = zap.New(zapcore.NewTee(coreArr...), zap.AddCaller()) //zap.AddCaller()为显示文件名和行号，可省略log.Info("hello info") log.Debug("hello debug") log.Error("hello error") }