zap是一个高性能日志库，下面简单介绍一下zap的使用。

1.下载zap包 (推荐学习：go)

因为zap是uber开源的，zap内使用的包是在go.uber.org/zap，如果直接go get这个包，可能会提示get不下来。

可以go get github.com/uber-go/zap，然后再把zap目录复制到src/go.uber.org下(可能还会需要go.uber.org/atomic和go.uber.org/multierr，均可参考该方法get下来)

2.zap简单封装示例。package logger

import (

"go.uber.org/zap"

"go.uber.org/zap/zapcore"

"gopkg.in/natefinch/lumberjack.v2"

)

// error logger

var errorLogger *zap.SugaredLogger

var levelMap = map[string]zapcore.Level{

"debug": zapcore.DebugLevel,

"info": zapcore.InfoLevel,

"warn": zapcore.WarnLevel,

"error": zapcore.ErrorLevel,

"dpanic": zapcore.DPanicLevel,

"panic": zapcore.PanicLevel,

"fatal": zapcore.FatalLevel,

}

func getLoggerLevel(lvl string) zapcore.Level {

if level, ok := levelMap[lvl]; ok {

return level

}

return zapcore.InfoLevel

}

func init() {

fileName := "zap.log"

level := getLoggerLevel("debug")

syncWriter := zapcore.AddSync(&lumberjack.Logger{

Filename: fileName,

MaxSize: 1 << 30, //1G

LocalTime: true,

Compress: true,

})

encoder := zap.NewProductionEncoderConfig()

encoder.EncodeTime = zapcore.ISO8601TimeEncoder

core := zapcore.NewCore(zapcore.NewJSONEncoder(encoder), syncWriter, zap.NewAtomicLevelAt(level))

logger := zap.New(core, zap.AddCaller(), zap.AddCallerSkip(1))

errorLogger = logger.Sugar()

}

func Debug(args ...interface{}) {

errorLogger.Debug(args...)

}

func Debugf(template string, args ...interface{}) {

errorLogger.Debugf(template, args...)

}

func Info(args ...interface{}) {

errorLogger.Info(args...)

}

func Infof(template string, args ...interface{}) {

errorLogger.Infof(template, args...)

}

func Warn(args ...interface{}) {

errorLogger.Warn(args...)

}

func Warnf(template string, args ...interface{}) {

errorLogger.Warnf(template, args...)

}

func Error(args ...interface{}) {

errorLogger.Error(args...)

}

func Errorf(template string, args ...interface{}) {

errorLogger.Errorf(template, args...)

}

func DPanic(args ...interface{}) {

errorLogger.DPanic(args...)

}

func DPanicf(template string, args ...interface{}) {

errorLogger.DPanicf(template, args...)

}

func Panic(args ...interface{}) {

errorLogger.Panic(args...)

}

func Panicf(template string, args ...interface{}) {

errorLogger.Panicf(template, args...)

}

func Fatal(args ...interface{}) {

errorLogger.Fatal(args...)

}

func Fatalf(template string, args ...interface{}) {

errorLogger.Fatalf(template, args...)

}

简单封装后使用示例：package main

import (

"logger"

)

func main() {

logger.Infof("simple zap logger example")

}