logstash. Logs fields asLogstashEvents. caption-json-formatter. logrus's message json formatter with human-readable caption added. powerful-logrus-formatter. get fileName, log's line number and the latest function's name when print log; Sava log to files. 等等 设置日志级别# logrus日志一共7级...
file,err:=os.OpenFile("golang.log",os.O_CREATE|os.O_WRONLY,1) iferr==nil{ log.Out=file }else{ log.Info("failed to log to file") } log.WithFields(logrus.Fields{ "filename":"123.txt", }).Info("将日志信息输出到文件中") } 以上就是logrus日志框架的简单了解和使用...
package main import ( "fmt" "github.com/hpcloud/tail" "time" ) func main() { fileName := "./my.log" config := tail.Config{ ReOpen: true, // 重新打开 Follow: true, // 是否跟随 Location: &tail.SeekInfo{Offset: 0, Whence: 2}, // 从文件的哪个地方开始读 MustExist: false, //...
func isFileEmpty(filePath string) (bool, error) { fileInfo, err := os.Stat(filePath) if err != nil { return false, err } return fileInfo.Size() == 0, nil } func main() { filename := "1.log" f, err := os.OpenFile(filename, os.O_RDWR|os.O_CREATE, 0666) if err !=...
out :日志的输出目标,需要是一个实现了 io.Writer接口的对象,如:os.Stdout,os.Stderr,os.File等等 buf :用于缓存数据 flag可选值 其中flag的值在log包中定义了一些常量,它的作用主要是用于标识日志信息附加携带的信息: 代码语言:javascript 复制 // These flags define which text to prefix to each log entr...
log基本日志格式 代码语言:javascript 复制 1Ldate=1<<iota// 形如 2009/01/23 的⽇期2Ltime// 形如 01:23:23 的时间3Lmicroseconds// 形如 01:23:23.123123 的时间4Llongfile// 全路径⽂件名和⾏号: /a/b/c/d.go:235Lshortfile// ⽂件名和⾏号: d.go:236LstdFlags=Ldate|Ltime// ...
{"file":"/Users/xiaohe/go/src/github.com/he2121/log_test/main.go:14","func":"main.main","level":"error","msg":"error msg","time":"2021-11-09T17:37:27+08:00"}{"file":"/Users/xiaohe/go/src/github.com/he2121/log_test/main.go:15","func":"main.main","level":"fatal",...
使用file方式输出日志非常简单,只需要在logrus初始化时设置好输出路径即可: import ( "github.com/sirupsen/logrus" ) func main() { logFile, err := os.OpenFile("log.txt", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666) if err != nil { ...
如果返回的错误类型使用 os.IsNotExist() 判断为 true,说明文件或文件夹不存在 示例代码: packagemainimport("log""os")funcmain(){fileInfo,err:=os.Stat("/Users/ruby/Documents/pro/a/aa.txt")iferr!=nil{ifos.IsNotExist(err){log.Fatalln("file does not exist")}}log.Println(...
logLevel, suc := xlog.ParseLevel(strLogLevel) if suc == false { // failed to parse log level, will use the default level[INFO] instead." } xlog.SetLevel(logLevel) // write log to file. w2f, err := xlog.NewW2FileListener("") if err != nil { xlog.Fatal(err) } else { ...