英文:
slice bounds out of range error and i don't have any slice variable
问题
我正在处理一个项目,但是出现了一个错误,错误提示是“切片索引超出范围”,但是与该错误相关的代码行似乎并没有使用切片变量:
bt.blockDateTime = bt.getDate(bt.getDateBlockHeader(header[10:22]))
serviceType := hex2decimal(record[56:58])
以下是我创建并使用的函数:
func(bt *Hc34) getDateBlockHeader(input string) string{
year := input[0:2]
quant:= hex2decimal(input[3:6])
hour := input[6:len(input)];
/*if err!=nil{
panic(err)
}*/
return "20" + year + bt.getQuantDate(quant) + "" + hour
}
func(bt *Hc34) getDate(date string) string{
year := date[0:4]
month := date[4:6]
day := date[6:8]
hour := date[8:10]
minute := date[10:12]
second := date[12:14]
return year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + second;
}
func(bt *Hc34) getQuantDate(quant int) string{
nanoDayOfYear:=strconv.FormatInt(int64(quant)*24*60*60*1000*1000*1000, 10) + "ns"
durt,err:=time.ParseDuration(nanoDayOfYear)
t := time.Date(2009, time.January, 01, 00, 0, 0, 0, time.UTC)
t=t.Add(durt)
if err!=nil{
panic(err)
}
return string(t.Month())+""+string(t.Day())
}
func hex2decimal(hexStr string) int{
integer,_:=strconv.ParseInt(hexStr,0,64)
return int(integer)
}
以下是出现错误的代码行:
panic: runtime error: slice bounds out of range
goroutine 1 [running]:
github.com/bob96/hc34/beater.(*Hc34).hc34decoderfunc(0xc420238380, 0xc4202cc000, 0x2d128)
/home/hp/src/github.com/bob96/hc34/beater/hc34.go:190 +0xb60
github.com/bob96/hc34/beater.(*Hc34).hc34DataHolderfunc(0xc420238380, 0xc42016e3c0, 0x5e)
/home/hp/src/github.com/bob96/hc34/beater/hc34.go:141 +0xd3
github.com/bob96/hc34/beater.(*Hc34).Run(0xc420238380, 0xc420176000, 0xc4201760a8, 0xb)
/home/hp/src/github.com/bob96/hc34/beater/hc34.go:105 +0x109
github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat.(*Beat).launch(0xc420176000, 0x9a84e8, 0x0, 0x0)
/home/hp/src/github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat/beat.go:211 +0x706
github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat.Run(0x9855d5, 0x4, 0x0, 0x0, 0x9a84e8, 0xc4200001a0, 0xc4200001a0)
/home/hp/src/github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat/beat.go:136 +0x65
main.main()
/home/hp/src/github.com/bob96/hc34/main.go:12 +0x54
请问有人可以帮助我吗?非常感谢!
英文:
i'm working on a project and i had an error taht say slice bounds out of range but the lines that are concerned with this error don't seem to be a slive variable:
bt.blockDateTime =bt.getDate(bt.getDateBlockHeader(header[10:22]))
serviceType := hex2decimal(record[56:58])
and here are the function that i have created that i have used :
func(bt *Hc34) getDateBlockHeader(input string) string{
year := input[0:2]
quant:= hex2decimal(input[3:6])
hour := input[6:len(input)];
/*if err!=nil{
panic(err)
}*/
return "20" + year + bt.getQuantDate(quant) + "" + hour
}
func(bt *Hc34) getDate(date string) string{
year := date[0:4]
month := date[4:6]
day := date[6:8]
hour := date[8:10]
minute := date[10:12]
second := date[12:14]
return year + "-" + month + "-" + day + " " + hour + ":" + minute + ":" + second;
}
func(bt *Hc34) getQuantDate(quant int) string{
nanoDayOfYear:=strconv.FormatInt(int64(quant)*24*60*60*1000*1000*1000, 10) + "ns"
durt,err:=time.ParseDuration(nanoDayOfYear)
t := time.Date(2009, time.January, 01, 00, 0, 0, 0, time.UTC)
t=t.Add(durt)
if err!=nil{
panic(err)
}
return string(t.Month())+""+string(t.Day())
}
func hex2decimal(hexStr string) int{
integer,_:=strconv.ParseInt(hexStr,0,64)
return int(integer)
}
here is the error lines:
panic: runtime error: slice bounds out of range
goroutine 1 [running]:
github.com/bob96/hc34/beater.(*Hc34).hc34decoderfunc(0xc420238380, 0xc4202cc000, 0x2d128)
/home/hp/src/github.com/bob96/hc34/beater/hc34.go:190 +0xb60
github.com/bob96/hc34/beater.(*Hc34).hc34DataHolderfunc(0xc420238380, 0xc42016e3c0, 0x5e)
/home/hp/src/github.com/bob96/hc34/beater/hc34.go:141 +0xd3
github.com/bob96/hc34/beater.(*Hc34).Run(0xc420238380, 0xc420176000, 0xc4201760a8, 0xb)
/home/hp/src/github.com/bob96/hc34/beater/hc34.go:105 +0x109
github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat.(*Beat).launch(0xc420176000, 0x9a84e8, 0x0, 0x0)
/home/hp/src/github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat/beat.go:211 +0x706
github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat.Run(0x9855d5, 0x4, 0x0, 0x0, 0x9a84e8, 0xc4200001a0, 0xc4200001a0)
/home/hp/src/github.com/bob96/hc34/vendor/github.com/elastic/beats/libbeat/beat/beat.go:136 +0x65
main.main()
/home/hp/src/github.com/bob96/hc34/main.go:12 +0x54
can some one help me please it will be a bless!
答案1
得分: 2
一个字符串在Go语言中是字符的切片。这就是为什么你可以像record[56:58]
那样对字符串进行切片。
在切片之前,你需要检查字符串的长度,以避免出现错误。
可以像这样进行检查:
if len(string) < requiredLen {
return
}
a := string[requiredLen-2:requiredLen]
英文:
A string is a slice of characters in Go. That is why you are able to slice the string like record[56:58]
.
You need to check the length of the string before slicing it to avoid panics.
Something like
if len(string)<requiredLen{
return
}
a := string[requiredLen-2:requiredLen]
答案2
得分: 2
好的,以下是翻译好的内容:
当你编写如下的代码时:
x := y[a:b]
实际上是在进行切片操作。我建议在对"header"和"record"进行任何处理之前,先检查它们的长度。
希望对你有帮助。
英文:
Well, whenever you write code like
x := y[a:b]
you are effectively slicing. I suggest you check the length of the "header" and "record" before you do any processing on it.
Hope it helps.
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