golang日志操作

记录日志很方便~

package mainimport (    "fmt"    "log"    "os")func main() {    fmt.Println("start")    log.Println("start test log")    fp, err := os.Create("test.log")    if err != nil {        log.Fatalln("create file faild")        os.Exit(-1)    }    defer fp.Close()    aLoger := log.New(fp, "", log.LstdFlags|log.Llongfile)    log.Println("step1:")    aLoger.Println("1 step log result")    log.Println("step2:")    //aLoger.SetFlags(log.LstdFlags)    aLoger.Println("2 step log result")    log.Println("step3:")    aLoger.Fatalln("3 step log result")}