chore: 初始开源发布
iotlcm-admin-svr：管理后台服务。 - Go module：iotlcm → git.5iot.com/iotlcm-public/iotlcm-admin-svr（729 文件） - 凭据与地址脱敏：JWT signingKey（含代码里的 MustGet 默认值）、 MySQL DSN、Redis 口令、告警邮件发件人邮箱全部改为占位； 私网 IP → 文档地址段；库名 xiujie_admin → iotlcm - 真实手机号/邮箱 → 合法 11 位编造号 / example.com - 移除内部资产：CI 触发器、过时 DDL（sql/db_iotlcm.sql）、 私有依赖 go get 行、明文 registry 登录口令 - 启动 banner 统一 IOTLCM 方块字 + 社区惯例署名 - Dockerfile 改用公共基础镜像 - 拼错的 RADEME.md → README.md，README 重写 - 需要真实数据库的用例改为可用 IOTLCM_TEST_WITH_DB=1 显式启用 - 补 Apache-2.0 LICENSE，LF 行尾 + .gitattributes 数据库 schema 不随本仓发布（生产 DDL 已过时），README 已说明。
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MiFaZhan
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// package utility
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// @Link https://github.com/xiujiecn/xiu-admin
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// @Copyright Copyright (c) 2025 LiXiujie
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// @Author Lxj <li@xiujie.cn>
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// @License https://github.com/xiujiecn/xiu-admin/blob/master/LICENSE
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package utility
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import (
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"context"
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"fmt"
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"net"
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"os"
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"path/filepath"
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"slices"
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"strconv"
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"strings"
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"time"
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"github.com/gogf/gf/v2/crypto/gmd5"
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"github.com/gogf/gf/v2/net/ghttp"
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"github.com/gogf/gf/v2/os/gfile"
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"github.com/gogf/gf/v2/os/gtime"
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"github.com/mileusna/useragent"
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"golang.org/x/exp/rand"
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)
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func Md5(str string) string {
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return gmd5.MustEncryptString(str)
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}
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// 密码加密
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func PasswordEncrypt(password string, salt string) string {
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return Md5(password + salt)
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}
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// 解析时间
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func ParseDuration(d string) (time.Duration, error) {
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d = strings.TrimSpace(d)
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dr, err := time.ParseDuration(d)
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if err == nil {
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return dr, nil
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}
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if strings.Contains(d, "d") {
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index := strings.Index(d, "d")
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hour, _ := strconv.Atoi(d[:index])
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dr = time.Hour * 24 * time.Duration(hour)
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ndr, err := time.ParseDuration(d[index+1:])
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if err != nil {
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return dr, nil
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}
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return dr + ndr, nil
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}
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dv, err := strconv.ParseInt(d, 10, 64)
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return time.Duration(dv), err
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}
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// 随机生成5位字符
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func RandomString(n int) string {
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letters := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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b := make([]byte, n)
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for i := range b {
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b[i] = letters[rand.Intn(len(letters))]
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}
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return string(b)
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}
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// 获取客户端IP
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func GetClientIp(ctx context.Context) string {
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if ctx == nil {
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return ""
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}
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if ghttp.RequestFromCtx(ctx) == nil {
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return ""
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}
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return ghttp.RequestFromCtx(ctx).GetClientIp()
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}
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// 获取user-agent
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func GetUserAgent(ctx context.Context) string {
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return ghttp.RequestFromCtx(ctx).Header.Get("User-Agent")
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}
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// 获取操作系统
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func GetOs(ctx context.Context) string {
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userAgent := GetUserAgent(ctx)
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ua := useragent.Parse(userAgent)
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return ua.OS
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}
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// 获取浏览器
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func GetBrowser(ctx context.Context) string {
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userAgent := GetUserAgent(ctx)
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ua := useragent.Parse(userAgent)
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return ua.Name
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}
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// 获取ip所属城市
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func GetCityByIp(ip string) string {
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parsed := net.ParseIP(strings.Trim(strings.TrimSpace(ip), "[]"))
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if parsed == nil {
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return ""
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}
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if parsed.IsPrivate() || parsed.IsLoopback() || parsed.IsLinkLocalUnicast() || parsed.IsLinkLocalMulticast() || parsed.IsUnspecified() {
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return "内网IP"
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}
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return cityLookup.Get(parsed.String())
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}
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// 时间戳转 yyyy-MM-dd HH:mm:ss
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func TimeStampToDateTime(timeStamp int64) string {
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tm := gtime.NewFromTimeStamp(timeStamp)
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return tm.Format("Y-m-d H:i:s")
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}
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// 时间戳转 yyyy-MM-dd
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func TimeStampToDate(timeStamp int64) string {
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tm := gtime.NewFromTimeStamp(timeStamp)
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return tm.Format("Y-m-d")
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}
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// 服务端ip
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func GetLocalIP() (ip string, err error) {
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addrs, err := net.InterfaceAddrs()
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if err != nil {
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return
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}
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for _, addr := range addrs {
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ipAddr, ok := addr.(*net.IPNet)
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if !ok {
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continue
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}
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if ipAddr.IP.IsLoopback() {
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continue
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}
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if !ipAddr.IP.IsGlobalUnicast() {
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continue
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}
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return ipAddr.IP.String(), nil
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}
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return
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}
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func GetPublicIP() (ip string, err error) {
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ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
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defer cancel()
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return lookupPublicIP(ctx)
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}
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// 获取两个字符串之间的字符串
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func GetBetweenStr(str, start, end string) (result string) {
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startIndex := strings.Index(str, start)
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if startIndex == -1 {
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return ""
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}
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// 更新startIndex为开始字符串之后的位置
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startIndex += len(start)
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// 找到结束字符串的位置，从更新后的startIndex开始查找
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endIndex := strings.Index(str[startIndex:], end)
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if endIndex == -1 {
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return ""
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}
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// 切片操作获取中间的字符串
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result = str[startIndex : startIndex+endIndex]
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return
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}
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// A和B两个数组，A数组中存在，B数组中不存在
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func ArrayRightDiff(a, b []int64) []int64 {
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diff := make([]int64, 0)
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for _, v := range a {
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if !slices.Contains(b, v) {
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diff = append(diff, v)
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}
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}
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return diff
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}
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type fileInfo struct {
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name string
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size int64
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}
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// WalkDir 获取目录下文件的名称和大小
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func WalkDir(dirname string) ([]fileInfo, error) {
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var fileInfos []fileInfo
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err := filepath.Walk(dirname, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if !info.IsDir() {
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fileInfos = append(fileInfos, fileInfo{name: path, size: info.Size()})
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}
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return nil
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})
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return fileInfos, err
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}
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func DirSize(dirname string) string {
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var (
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s int64
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files, _ = WalkDir(dirname)
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)
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for _, n := range files {
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s += n.size
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}
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return FileSize(s)
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}
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func MergeAbs(path string, fileName ...string) string {
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var paths = []string{gfile.RealPath(path)}
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paths = append(paths, fileName...)
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return gfile.Join(paths...)
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}
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// FileSize 字节的单位转换 保留两位小数
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func FileSize(fileSize int64) string {
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units := []string{"B", "KB", "MB", "GB", "TB", "EB"}
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var size = float64(fileSize)
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var i int
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for i = 0; size > 1024; i++ {
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size /= 1024
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}
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return fmt.Sprintf("%.2f %s", size, units[i])
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}
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// UniqueSlice 切片去重
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func UniqueSlice[K comparable](languages []K) []K {
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result := make([]K, 0, len(languages))
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temp := map[K]struct{}{}
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for _, item := range languages {
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if _, ok := temp[item]; !ok {
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temp[item] = struct{}{}
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result = append(result, item)
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}
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}
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return result
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}
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