折腾:
【已解决】go语言中实现log信息同时输出到文件和控制台(命令行)
期间,已经通过io的MultiWriter搞定了同时输出信息到文件和console,但是不支持level。
所以,再去试试这个log4go。
github.com/keepeye/log4go
【折腾过程】
1.大概看了看,貌似功能很强大。
有点类似于之前的C#的NLog,为C#的log功能扩展;
此处log4go,是针对go语言的log功能的扩展。
2.此log4go,是go语言的第三方的包,所以,先要去搞懂:
【记录】go语言中安装第三方包package(库):log4go
3.安装完毕后,再去参考官网的:
http://code.google.com/p/log4go/wiki/GettingStarted
去看看如何使用。
4.先去导入:
1 2 | //import l4g "log4go.googlecode.com/hg" import l4g "code.google.com/p/log4go" |
结果是:
1 2 3 | E:\Dev_Root\go\src\EmulateLoginBaidu>go run EmulateLoginBaidu.go # command-line-arguments .\EmulateLoginBaidu.go:34: imported and not used: "code.google.com/p/log4go" |
这说明:
正确导入了(但只是暂时还没去使用而已)
5.接着去使用。
用如下代码:
1 2 3 4 5 6 7 8 9 10 11 | //do some init for crifanLib func initCrifanLib(){ l4g.Info( "init for crifanLib" ) //gLogger.Println("init for crifanLib"); gCurCookies = nil return } //init for logger func initLogger(){ l4g.Debug( "in initLogger" ) |
效果是:
6.看到其解释了:
上述用的,是默认的,已经实现了的,对于console的log
默认配置为:DEBUG的level:debug及以上的level都显示。
所有的level,依次是:Finest, Fine, Debug, Trace, Info, Warning, Error, Critical
而此处,我想要实现:
(1)重新更改此console的level为Info
(2)添加此处的log文件作为输出,且设置level所有,即最低一级的Finest
7.先去添加log文件:
但是想要去看对应的文档的,结果原先作者的说明:
先去:
1 | godoc -http=:6060 |
(我此处实际上本身已经打开godoc的server了)
再去打开地址:
http://localhost:6060/pkg/log4go.googlecode.com/svn/stable/
结果肯定不对的。
后来经过自己的分析,去访问:
http://localhost:6060/pkg/code.google.com/p/log4go/
就可以了。
8.去看看对应的:
http://localhost:6060/pkg/code.google.com/p/log4go/#AddFilter
内容是:
func AddFilterfunc AddFilter(name string, lvl level, writer LogWriter) Wrapper for (*Logger).AddFilter |
去试试代码。
结果基本实现了所要的效果:
即:
对于代码中debug信息,只在文件中显示
对于info及以上的信息,console和文件,都显示。
实现了level的自定义。
9.目前,唯一一个小问题,不是我喜欢的:
对于,我经常调试程序,
希望每次重新运行时,对于log文件,都自动清空。
而不要对于log文件是APPEND模式:
每次的输出,都添加到后面。
而不清空log文件。
10.所以,再去想办法,新建log时,判断是否已经存在文件,如果存在去删除掉:
【已解决】go语言中判断文件是否存在如果有已存在则删除
【总结】
最终,基本实现了全部的效果:
1.每次运行程序,可以OVERWRITE旧的log文件,而不是APPEND
2.可以同时输出内容到log文件和console
3.且console和log文件的输出level都可以配置:
此处要的是:
INFO及以上的,都可以在console中显示;
全部信息(包括debug),都可以在log文件中显示。
全部代码如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | /* * [File] * EmulateLoginBaidu.go * * [Function] * 【记录】用go语言实现模拟登陆百度 * http://www.crifan.com/emulate_login_baidu_using_go_language/ * * [Version] * 2013-09-19 * * [Contact] * http://www.crifan.com/about/me/ */ package main import ( //"fmt" //"builtin" //"log" "os" "runtime" "path" "strings" //"io" "time" "io/ioutil" "net/http" //"net/http/cookiejar" //"sync" //"net/url" ) //import l4g "log4go.googlecode.com/hg" //import l4g "code.google.com/p/log4go" github.com/keepeye/log4go " /*************************************************************************************************** Global Variables ***************************************************************************************************/ var gCurCookies []*http.Cookie; //var gLogger *log.Logger; var gLogger log4go.Logger; /*************************************************************************************************** Functions ***************************************************************************************************/ //do init before all others func initAll(){ gCurCookies = nil gLogger = nil initLogger() initCrifanLib() } //de-init for all func deinitAll(){ gCurCookies = nil if (nil == gLogger) { gLogger.Close(); gLogger = nil } } //do some init for crifanLib func initCrifanLib(){ gLogger.Debug( "init for crifanLib" ) gCurCookies = nil return } //init for logger func initLogger(){ var filenameOnly string filenameOnly = GetCurFilename() var logFilename string = filenameOnly + ".log" ; //gLogger = log4go.NewLogger() gLogger = make(log4go.Logger) //for console //gLogger.AddFilter("stdout", log4go.INFO, log4go.NewConsoleLogWriter()) gLogger.AddFilter( "stdout" , log4go.INFO, log4go.NewConsoleLogWriter()) //for log file if _, err := os.Stat(logFilename); err == nil { //fmt.Printf("found old log file %s, now remove it\n", logFilename) os.Remove(logFilename) } //gLogger.AddFilter("logfile", log4go.FINEST, log4go.NewFileLogWriter(logFilename, true)) gLogger.AddFilter( "logfile" , log4go.FINEST, log4go.NewFileLogWriter(logFilename, false )) gLogger.Info( "Current time is : %s" , time.Now().Format( "15:04:05 MST 2006/01/02" )) return } // GetCurFilename // Get current file name, without suffix func GetCurFilename() string { _, fulleFilename, _, _ := runtime.Caller( 0 ) //fmt.Println(fulleFilename) var filenameWithSuffix string filenameWithSuffix = path.Base(fulleFilename) //fmt.Println("filenameWithSuffix=", filenameWithSuffix) var fileSuffix string fileSuffix = path.Ext(filenameWithSuffix) //fmt.Println("fileSuffix=", fileSuffix) var filenameOnly string filenameOnly = strings.TrimSuffix(filenameWithSuffix, fileSuffix) //fmt.Println("filenameOnly=", filenameOnly) return filenameOnly } //get url response html func GetUrlRespHtml(url string) string{ gLogger.Debug( "GetUrlRespHtml, url=%s" , url) var respHtml string = "" ; resp, err := http.Get(url) if err != nil { gLogger.Warn( "http get url=%s response errror=%s\n" , url, err) } defer resp.Body.Close() body, err := ioutil.ReadAll(resp.Body) //gLogger.Debug("body=%s\n", body) gCurCookies = resp.Cookies() respHtml = string(body) return respHtml } func printCurCookies() { var cookieNum int = len(gCurCookies); gLogger.Info( "cookieNum=%d" , cookieNum) for i := 0 ; i < cookieNum; i++ { var curCk *http.Cookie = gCurCookies[i]; //gLogger.Info("curCk.Raw=%s", curCk.Raw) gLogger.Info( "------ Cookie [%d]------" , i) gLogger.Info( "Name\t=%s" , curCk.Name) gLogger.Info( "Value\t=%s" , curCk.Value) gLogger.Info( "Path\t=%s" , curCk.Path) gLogger.Info( "Domain\t=%s" , curCk.Domain) gLogger.Info( "Expires\t=%s" , curCk.Expires) gLogger.Info( "RawExpires=%s" , curCk.RawExpires) gLogger.Info( "MaxAge\t=%d" , curCk.MaxAge) gLogger.Info( "Secure\t=%t" , curCk.Secure) gLogger.Info( "HttpOnly=%t" , curCk.HttpOnly) gLogger.Info( "Raw\t=%s" , curCk.Raw) gLogger.Info( "Unparsed=%s" , curCk.Unparsed) } } func main() { initAll() gLogger.Info( "this is EmulateLoginBaidu.go" ) var baiduMainUrl string baiduMainUrl = "http://www.baidu.com/" ; //baiduMainUrl := "http://www.baidu.com/"; //var baiduMainUrl string = "http://www.baidu.com/"; gLogger.Info( "baiduMainUrl=%s" , baiduMainUrl) respHtml := GetUrlRespHtml(baiduMainUrl) gLogger.Debug( "respHtml=%s" , respHtml) printCurCookies() deinitAll() } |
效果是:
console中输出的内容:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | E:\Dev_Root\go\src\EmulateLoginBaidu>go run EmulateLoginBaidu.go [09/20/13 18:39:40] [INFO] Current time is : 18:39:40 +0800 2013/09/20 [09/20/13 18:39:40] [INFO] this is EmulateLoginBaidu.go [09/20/13 18:39:40] [INFO] baiduMainUrl=http://www.baidu.com/ [09/20/13 18:39:40] [INFO] cookieNum=3 [09/20/13 18:39:40] [INFO] ------ Cookie [0]------ [09/20/13 18:39:40] [INFO] Name =BDSVRTM [09/20/13 18:39:40] [INFO] Value =3 [09/20/13 18:39:40] [INFO] Path =/ [09/20/13 18:39:40] [INFO] Domain = [09/20/13 18:39:40] [INFO] Expires =0001-01-01 00:00:00 +0000 UTC [09/20/13 18:39:40] [INFO] RawExpires= [09/20/13 18:39:40] [INFO] MaxAge =0 [09/20/13 18:39:40] [INFO] Secure =false [09/20/13 18:39:40] [INFO] HttpOnly=false [09/20/13 18:39:40] [INFO] Raw =BDSVRTM=3; path=/ [09/20/13 18:39:40] [INFO] Unparsed=[] [09/20/13 18:39:40] [INFO] ------ Cookie [1]------ [09/20/13 18:39:40] [INFO] Name =H_PS_PSSID [09/20/13 18:39:40] [INFO] Value =3415_1431_2975_2981 [09/20/13 18:39:40] [INFO] Path =/ [09/20/13 18:39:40] [INFO] Domain =.baidu.com [09/20/13 18:39:40] [INFO] Expires =0001-01-01 00:00:00 +0000 UTC [09/20/13 18:39:40] [INFO] RawExpires= [09/20/13 18:39:40] [INFO] MaxAge =0 [09/20/13 18:39:40] [INFO] Secure =false [09/20/13 18:39:40] [INFO] HttpOnly=false [09/20/13 18:39:40] [INFO] Raw =H_PS_PSSID=3415_1431_2975_2981; path=/; domain=.baidu.com [09/20/13 18:39:40] [INFO] Unparsed=[] [09/20/13 18:39:40] [INFO] ------ Cookie [2]------ [09/20/13 18:39:40] [INFO] Name =BAIDUID [09/20/13 18:39:40] [INFO] Value =AF99372EE54C9816618EED94475DDD26:FG=1 [09/20/13 18:39:40] [INFO] Path =/ [09/20/13 18:39:40] [INFO] Domain =.baidu.com [09/20/13 18:39:40] [INFO] Expires =0001-01-01 00:00:00 +0000 UTC [09/20/13 18:39:40] [INFO] RawExpires=Fri, 20-Sep-43 10:39:32 GMT E:\Dev_Root\go\src\EmulateLoginBaidu> |
log文件中输出的内容:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | [2013/09/20 18:39:40 ] [INFO] (main.initLogger:91) Current time is : 18:39:40 +0800 2013/09/20 [2013/09/20 18:39:40 ] [DEBG] (main.initCrifanLib:68) init for crifanLib [2013/09/20 18:39:40 ] [INFO] (main.main:159) this is EmulateLoginBaidu.go [2013/09/20 18:39:40 ] [INFO] (main.main:165) baiduMainUrl=http://www.baidu.com/ [2013/09/20 18:39:40 ] [DEBG] (main.GetUrlRespHtml:117) GetUrlRespHtml, url=http://www.baidu.com/ [2013/09/20 18:39:40 ] [DEBG] (main.main:167) respHtml=<!DOCTYPE html><!--STATUS OK--><html><head><meta http-equiv="content-type" content="text/html;charset=utf-8"><title>百度一下,你就知道</title><style >html,.......... new Date(_t + 10000).toGMTString()})}catch(e){}</script></html><!--0556c44ca22cac33--> [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:137) cookieNum=3 [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:141) ------ Cookie [0]------ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:142) Name =BDSVRTM [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:143) Value =3 [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:144) Path =/ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:145) Domain = [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:146) Expires =0001-01-01 00:00:00 +0000 UTC [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:147) RawExpires= [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:148) MaxAge =0 [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:149) Secure =false [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:150) HttpOnly=false [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:151) Raw =BDSVRTM=3; path=/ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:152) Unparsed=[] [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:141) ------ Cookie [1]------ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:142) Name =H_PS_PSSID [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:143) Value =3415_1431_2975_2981 [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:144) Path =/ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:145) Domain =.baidu.com [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:146) Expires =0001-01-01 00:00:00 +0000 UTC [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:147) RawExpires= [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:148) MaxAge =0 [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:149) Secure =false [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:150) HttpOnly=false [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:151) Raw =H_PS_PSSID=3415_1431_2975_2981; path=/; domain=.baidu.com [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:152) Unparsed=[] [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:141) ------ Cookie [2]------ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:142) Name =BAIDUID [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:143) Value =AF99372EE54C9816618EED94475DDD26:FG=1 [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:144) Path =/ [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:145) Domain =.baidu.com [2013/09/20 18:39:40 ] [INFO] (main.printCurCookies:146) Expires =0001-01-01 00:00:00 +0000 UTC |
整体效果还不错的说。