package main import ( "fmt" "log" "os" ) func main(){ logfile,err := os.OpenFile("d:/workspace/golang/test.log",os.O_RDWR|os.O_CREATE|os.O_APPEND,0); if err!=nil { fmt.Printf("%s\r\n",err.Error()); os.Exit(-1); } defer logfile.Close(); logger := log.New(logfile,"\r\n",log.Ldate|log.Ltime|log.Llongfile); logger.Println("hello"); logger.Println("oh...."); logger.Fatal("test"); logger.Fatal("test2"); }
这里打开日志文件的时候,同时使用了””os.O_APPEND”这个,这样的话,日志会一直在文件最后面打印出来.
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