Go语言从字符串中匹配IPV6公网地址

title: Go语言从字符串中匹配IPV6公网地址
date: 2024-04-14 10:46:59.0
updated: 2024-04-14 10:46:59.0
url: https://liumou.site/doc/704
categories:

• 开发
• GO
  tags:

• Go

package main

import (
    "fmt"
    "net"
    "regexp"
)

func Ipv6PatternStr(data string) []net.IP {
    var ips []net.IP
    // 使用正则表达式匹配以240开头，可能包含::的IPv6地址部分
    // 注意：这个正则表达式不会确保整个IPv6地址的合法性，只是匹配部分字符串
    ipv6Pattern := `240[0-9a-fA-F]+(:[0-9a-fA-F]+)*(::([0-9a-fA-F]+:)*[0-9a-fA-F]+)?`
    re := regexp.MustCompile(ipv6Pattern)

    // 查找所有匹配的IPv6地址部分
    matches := re.FindAllString(data, -1)

    // 输出结果
    for _, match := range matches {
        ip := net.ParseIP(match)
        if ip != nil {
            ips = append(ips, ip)
        }
    }
    return ips
}
func main() {
    // 假设这是从某个源获取的数据字符串
    data := `eth0@if31: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000  
    inet6 240e:350:8947:c401::3bf/128 scope global dynamic noprefixroute   
       valid_lft 2729sec preferred_lft 2729sec  
    inet6 240e:350:8947:c401:8c92:99ff:fe1f:eaaf/64 scope global dynamic mngtmpaddr noprefixroute   
       valid_lft 2728sec preferred_lft 2728sec  
    inet6 fe80::8c92:99ff:fe1f:eacf/64 scope link   
       valid_lft forever preferred_lft forever`

    ips := Ipv6PatternStr(data)
    if len(ips) == 0 {
        fmt.Println("No IPv6 address found")
        return
    }
    fmt.Println("IPv6 addresses found:")
    for _, ip := range ips {
        fmt.Println(ip)
    }
}

效果如下

PS C:\Users\Y\GolandProjects\tt> go run .\main.go
IPv6 addresses found:
240e:350:8947:c401::3bf
240e:350:8947:c401:8c92:99ff:fe1f:eaaf
PS C:\Users\Y\GolandProjects\tt>