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go-logger's Introduction

go-logger 是golang 的日志库 ,基于对golang内置log的封装。
用法类似java日志工具包log4j

打印日志有5个方法 Debug,Info,Warn, Error ,Fatal  日志级别由低到高

设置日志级别的方法为:logger.SetLevel() 如:logger.SetLevel(logger.WARN)
则:logger.Debug(....),logger.Info(...) 日志不会打出,而 
 logger.Warn(...),logger.Error(...),logger.Fatal(...)日志会打出。
设置日志级别的参数有7个,分别为:ALL,DEBUG,INFO,WARN,ERROR,FATAL,OFF
其中 ALL表示所有调用打印日志的方法都会打出,而OFF则表示都不会打出。


日志文件切割有两种类型:1为按日期切分。2为按日志大小切分。
按日期切分时:每天一个备份日志文件,后缀为 .yyyy-MM-dd 
过0点是生成前一天备份文件

按大小切分是需要3个参数,1为文件大小,2为单位,3为文件数量
文件增长到指定限值时,生成备份文件,结尾为依次递增的自然数。
文件数量增长到指定限制时,新生成的日志文件将覆盖前面生成的同名的备份日志文件。

示例:

	//指定是否控制台打印,默认为true
	logger.SetConsole(true)
	//指定日志文件备份方式为文件大小的方式
	//第一个参数为日志文件存放目录
	//第二个参数为日志文件命名
	//第三个参数为备份文件最大数量
	//第四个参数为备份文件大小
	//第五个参数为文件大小的单位 KB,MB,GB TB
	//logger.SetRollingFile("d:/logtest", "test.log", 10, 5, logger.KB)

	//指定日志文件备份方式为日期的方式
	//第一个参数为日志文件存放目录
	//第二个参数为日志文件命名
	logger.SetRollingDaily("d:/logtest", "test.log")

	//指定日志级别  ALL,DEBUG,INFO,WARN,ERROR,FATAL,OFF 级别由低到高
	//一般习惯是测试阶段为debug,生成环境为info以上
	logger.SetLevel(logger.DEBUG)


打印日志:
func log(i int) {
	logger.Debug("Debug>>>>>>>>>>>>>>>>>>>>>>" + strconv.Itoa(i))
	logger.Info("Info>>>>>>>>>>>>>>>>>>>>>>>>>" + strconv.Itoa(i))
	logger.Warn("Warn>>>>>>>>>>>>>>>>>>>>>>>>>" + strconv.Itoa(i))
	logger.Error("Error>>>>>>>>>>>>>>>>>>>>>>>>>" + strconv.Itoa(i))
	logger.Fatal("Fatal>>>>>>>>>>>>>>>>>>>>>>>>>" + strconv.Itoa(i))
}

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