package ipUtils

import (
    "bytes"
    "encoding/json"
    "golang.org/x/text/encoding/simplifiedchinese"
    "golang.org/x/text/transform"
    "io/ioutil"
    "net"
    "net/http"
    "time"
)

func GetRealAddressByIP(ip string) string {
    toByteIp := net.ParseIP(ip)
    if isLocalIp(toByteIp) {
        return "服務(wù)器登錄"
    }
    if isLANIp(toByteIp) {
        return "局域網(wǎng)"
    }
    return getLocation(ip)
}

func isLocalIp(IP net.IP) bool {
    if IP.IsLoopback() || IP.IsLinkLocalMulticast() || IP.IsLinkLocalUnicast() {
        return true
    }
    return false
}

func isLANIp(IP net.IP) bool {
    if ip4 := IP.To4(); ip4 != nil {
        switch true {
        case ip4[0] == 10:
            return true
        case ip4[0] == 172 && ip4[1] >= 16 && ip4[1] <= 31:
            return true
        case ip4[0] == 192 && ip4[1] == 168:
            return true
        default:
            return false
        }
    }
    return false
}
func getLocation(ip string) string {
    url := "https://whois.pconline.com.cn/ipJson.jsp?json=true&ip=" + ip
    client := &http.Client{Timeout: 5 * time.Second}
    resp, err := client.Get(url)
    if err != nil {
        return "未知地址"
    }
    defer resp.Body.Close()
    result, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        return "未知地址"
    }
    reader := transform.NewReader(bytes.NewReader(result), simplifiedchinese.GBK.NewDecoder())
    d, err := ioutil.ReadAll(reader)
    if err != nil {
        return "未知地址"
    }
    m := make(map[string]string)
    err = json.Unmarshal(d, &m)
    addr := m["addr"]
    if addr != "" {
        return addr
    } else {
        return "未知地址"
    }
}
func GetLocalIP() (ip string, err error) {
    addrs, err := net.InterfaceAddrs()
    if err != nil {
        return
    }
    for _, addr := range addrs {
        ipAddr, ok := addr.(*net.IPNet)
        if !ok {
            continue
        }
        if ipAddr.IP.IsLoopback() {
            continue
        }
        if !ipAddr.IP.IsGlobalUnicast() {
            continue
        }
        return ipAddr.IP.String(), nil
    }
    return
}

查詢來源
go get github.com/lionsoul2014/ip2region/binding/golang
獲取方法
下載xdh 地址
https://gitee.com/lionsoul/ip2region/tree/master/binding/golang

import (
    "fmt"
    "github.com/lionsoul2014/ip2region/binding/golang/xdb"
    "time"
)

func main() {
    var dbPath = "ip2region.xdb file path"
    searcher, err := xdb.NewWithFileOnly(dbPath)
    if err != nil {
        fmt.Printf("failed to create searcher: %s\n", err.Error())
        return
    }

    defer searcher.Close()

    // do the search
    var ip = "1.2.3.4"
    var tStart = time.Now()
    region, err := searcher.SearchByStr(ip)
    if err != nil {
        fmt.Printf("failed to SearchIP(%s): %s\n", ip, err)
        return
    }

    fmt.Printf("{region: %s, took: %s}\n", region, time.Since(tStart))

    // 備注：并發(fā)使用，每個(gè) goroutine 需要?jiǎng)?chuàng)建一個(gè)獨(dú)立的 searcher 對(duì)象。
}