Go语言实现IP段范围校验示例

package main

import (
 "fmt"
 "strconv"
 "strings"
)

func main() {
 ipVerifyList := "192.168.1.0-192.172.3.255"
 ip := "192.170.223.1"
 ipSlice := strings.Split(ipVerifyList, `-`)
 if len(ipSlice) < 0 {
  return
 }
 if ip2Int(ip) >= ip2Int(ipSlice[0]) && ip2Int(ip) <= ip2Int(ipSlice[1]) {
  fmt.Println("ip in iplist")
  return
 }
 fmt.Println("ip not in iplist")
}

func ip2Int(ip string) int64 {
 if len(ip) == 0 {
  return 0
 }
 bits := strings.Split(ip, ".")
 if len(bits) < 4 {
  return 0
 }
 b0 := string2Int(bits[0])
 b1 := string2Int(bits[1])
 b2 := string2Int(bits[2])
 b3 := string2Int(bits[3])

 var sum int64
 sum += int64(b0) << 24
 sum += int64(b1) << 16
 sum += int64(b2) << 8
 sum += int64(b3)

 return sum
}

func string2Int(in string) (out int) {
 out, _ = strconv.Atoi(in)
 return
}