package utils import ( "bufio" "crypto/cipher" "crypto/des" "crypto/md5" "crypto/sha1" "encoding/base64" "encoding/hex" "encoding/json" "errors" "fmt" "image" "image/png" "io" "math" "math/rand" "net" "net/http" "os" "os/exec" "path" "regexp" "strconv" "strings" "time" "github.com/shopspring/decimal" ) // 随机数种子 var rnd = rand.New(rand.NewSource(time.Now().UnixNano())) func GetRandString(size int) string { allLetterDigit := []string{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "!", "@", "#", "$", "%", "^", "&", "*"} randomSb := "" digitSize := len(allLetterDigit) for i := 0; i < size; i++ { randomSb += allLetterDigit[rnd.Intn(digitSize)] } return randomSb } func GetRandStringNoSpecialChar(size int) string { allLetterDigit := []string{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"} randomSb := "" digitSize := len(allLetterDigit) for i := 0; i < size; i++ { randomSb += allLetterDigit[rnd.Intn(digitSize)] } return randomSb } func StringsToJSON(str string) string { rs := []rune(str) jsons := "" for _, r := range rs { rint := int(r) if rint < 128 { jsons += string(r) } else { jsons += "\\u" + strconv.FormatInt(int64(rint), 16) // json } } return jsons } // 序列化 func ToString(v interface{}) string { data, _ := json.Marshal(v) return string(data) } // md5加密 func MD5(data string) string { m := md5.Sum([]byte(data)) return hex.EncodeToString(m[:]) } // 获取数字随机字符 func GetRandDigit(n int) string { return fmt.Sprintf("%0"+strconv.Itoa(n)+"d", rnd.Intn(int(math.Pow10(n)))) } // 获取随机数 func GetRandNumber(n int) int { return rnd.Intn(n) } func GetRandInt(min, max int) int { if min >= max || min == 0 || max == 0 { return max } return rand.Intn(max-min) + min } func GetToday(format string) string { today := time.Now().Format(format) return today } // 获取今天剩余秒数 func GetTodayLastSecond() time.Duration { today := GetToday(FormatDate) + " 23:59:59" end, _ := time.ParseInLocation(FormatDateTime, today, time.Local) return time.Duration(end.Unix()-time.Now().Local().Unix()) * time.Second } // 处理出生日期函数 func GetBrithDate(idcard string) string { l := len(idcard) var s string if l == 15 { s = "19" + idcard[6:8] + "-" + idcard[8:10] + "-" + idcard[10:12] return s } if l == 18 { s = idcard[6:10] + "-" + idcard[10:12] + "-" + idcard[12:14] return s } return GetToday(FormatDate) } // 处理性别 func WhichSexByIdcard(idcard string) string { var sexs = [2]string{"女", "男"} length := len(idcard) if length == 18 { sex, _ := strconv.Atoi(string(idcard[16])) return sexs[sex%2] } else if length == 15 { sex, _ := strconv.Atoi(string(idcard[14])) return sexs[sex%2] } return "男" } // 截取小数点后几位 func SubFloatToString(f float64, m int) string { n := strconv.FormatFloat(f, 'f', -1, 64) if n == "" { return "" } if m >= len(n) { return n } newn := strings.Split(n, ".") if m == 0 { return newn[0] } if len(newn) < 2 || m >= len(newn[1]) { return n } return newn[0] + "." + newn[1][:m] } // 截取小数点后几位 func SubFloatToFloat(f float64, m int) float64 { newn := SubFloatToString(f, m) newf, _ := strconv.ParseFloat(newn, 64) return newf } // 截取小数点后几位 func SubFloatToFloatStr(f float64, m int) string { newn := SubFloatToString(f, m) return newn } // 获取相差时间-年 func GetYearDiffer(start_time, end_time string) int { t1, _ := time.ParseInLocation("2006-01-02", start_time, time.Local) t2, _ := time.ParseInLocation("2006-01-02", end_time, time.Local) age := t2.Year() - t1.Year() if t2.Month() < t1.Month() || (t2.Month() == t1.Month() && t2.Day() < t1.Day()) { age-- } return age } // 获取相差时间-秒 func GetSecondDifferByTime(start_time, end_time time.Time) int64 { diff := end_time.Unix() - start_time.Unix() return diff } func FixFloat(f float64, m int) float64 { newn := SubFloatToString(f+0.00000001, m) newf, _ := strconv.ParseFloat(newn, 64) return newf } // 将字符串数组转化为逗号分割的字符串形式 ["str1","str2","str3"] >>> "str1,str2,str3" func StrListToString(strList []string) (str string) { if len(strList) > 0 { for k, v := range strList { if k == 0 { str = v } else { str = str + "," + v } } return } return "" } // 数据没有记录 func ErrNoRow() string { return " no row found" } // 校验邮箱格式 func ValidateEmailFormatat(email string) bool { reg := regexp.MustCompile(RegularEmail) return reg.MatchString(email) } // 验证是否是手机号 func ValidateMobileFormatat(mobileNum string) bool { reg := regexp.MustCompile(RegularMobile) return reg.MatchString(mobileNum) } // 判断文件是否存在 func FileIsExist(filePath string) bool { _, err := os.Stat(filePath) return err == nil || os.IsExist(err) } // 获取图片扩展名 func GetImgExt(file string) (ext string, err error) { var headerByte []byte headerByte = make([]byte, 8) fd, err := os.Open(file) if err != nil { return "", err } defer fd.Close() _, err = fd.Read(headerByte) if err != nil { return "", err } xStr := fmt.Sprintf("%x", headerByte) switch { case xStr == "89504e470d0a1a0a": ext = ".png" case xStr == "0000010001002020": ext = ".ico" case xStr == "0000020001002020": ext = ".cur" case xStr[:12] == "474946383961" || xStr[:12] == "474946383761": ext = ".gif" case xStr[:10] == "0000020000" || xStr[:10] == "0000100000": ext = ".tga" case xStr[:8] == "464f524d": ext = ".iff" case xStr[:8] == "52494646": ext = ".ani" case xStr[:4] == "4d4d" || xStr[:4] == "4949": ext = ".tiff" case xStr[:4] == "424d": ext = ".bmp" case xStr[:4] == "ffd8": ext = ".jpg" case xStr[:2] == "0a": ext = ".pcx" default: ext = "" } return ext, nil } // 保存图片 func SaveImage(path string, img image.Image) (err error) { //需要保持的文件 imgfile, err := os.Create(path) defer imgfile.Close() // 以PNG格式保存文件 err = png.Encode(imgfile, img) return err } // 下载图片 func DownloadImage(imgUrl string) (filePath string, err error) { imgPath := "./static/imgs/" fileName := path.Base(imgUrl) res, err := http.Get(imgUrl) if err != nil { fmt.Println("A error occurred!") return } defer res.Body.Close() // 获得get请求响应的reader对象 reader := bufio.NewReaderSize(res.Body, 32*1024) filePath = imgPath + fileName file, err := os.Create(filePath) if err != nil { return } // 获得文件的writer对象 writer := bufio.NewWriter(file) written, _ := io.Copy(writer, reader) fmt.Printf("Total length: %d \n", written) return } // 保存base64数据为文件 func SaveBase64ToFile(content, path string) error { data, err := base64.StdEncoding.DecodeString(content) if err != nil { return err } f, err := os.Create(path) defer f.Close() if err != nil { return err } f.Write(data) return nil } func SaveBase64ToFileBySeek(content, path string) (err error) { data, err := base64.StdEncoding.DecodeString(content) exist, err := PathExists(path) if err != nil { return } if !exist { f, err := os.Create(path) if err != nil { return err } n, _ := f.Seek(0, 2) // 从末尾的偏移量开始写入内容 _, err = f.WriteAt([]byte(data), n) defer f.Close() } else { f, err := os.OpenFile(path, os.O_WRONLY, 0644) if err != nil { return err } n, _ := f.Seek(0, 2) // 从末尾的偏移量开始写入内容 _, err = f.WriteAt([]byte(data), n) defer f.Close() } return nil } func PathExists(path string) (bool, error) { _, err := os.Stat(path) if err == nil { return true, nil } if os.IsNotExist(err) { return false, nil } return false, err } func StartIndex(page, pagesize int) int { if page > 1 { return (page - 1) * pagesize } return 0 } func PageCount(count, pagesize int) int { if count%pagesize > 0 { return count/pagesize + 1 } else { return count / pagesize } } func TrimHtml(src string) string { //将HTML标签全转换成小写 re, _ := regexp.Compile("\\<[\\S\\s]+?\\>") src = re.ReplaceAllStringFunc(src, strings.ToLower) re, _ = regexp.Compile("\\") src = re.ReplaceAllString(src, "[图片]") re, _ = regexp.Compile("class[\\S\\s]+?>") src = re.ReplaceAllString(src, "") re, _ = regexp.Compile("\\<[\\S\\s]+?\\>") src = re.ReplaceAllString(src, "") return strings.TrimSpace(src) } //1556164246 -> 2019-04-25 03:50:46 +0000 //timestamp func TimeToTimestamp() { fmt.Println(time.Unix(1556164246, 0).Format("2006-01-02 15:04:05")) } func ToUnicode(text string) string { textQuoted := strconv.QuoteToASCII(text) textUnquoted := textQuoted[1 : len(textQuoted)-1] return textUnquoted } func VersionToInt(version string) int { version = strings.Replace(version, ".", "", -1) n, _ := strconv.Atoi(version) return n } func IsCheckInList(list []int, s int) bool { for _, v := range list { if v == s { return true } } return false } func round(num float64) int { return int(num + math.Copysign(0.5, num)) } func toFixed(num float64, precision int) float64 { output := math.Pow(10, float64(precision)) return float64(round(num*output)) / output } // GetWilsonScore returns Wilson Score func GetWilsonScore(p, n float64) float64 { if p == 0 && n == 0 { return 0 } return toFixed(((p+1.9208)/(p+n)-1.96*math.Sqrt(p*n/(p+n)+0.9604)/(p+n))/(1+3.8416/(p+n)), 2) } // 将中文数字转化成数字,比如 第三百四十五章,返回第345章 不支持一亿及以上 func ChangeWordsToNum(str string) (numStr string) { words := ([]rune)(str) num := 0 n := 0 for i := 0; i < len(words); i++ { word := string(words[i : i+1]) switch word { case "万": if n == 0 { n = 1 } n = n * 10000 num = num*10000 + n n = 0 case "千": if n == 0 { n = 1 } n = n * 1000 num += n n = 0 case "百": if n == 0 { n = 1 } n = n * 100 num += n n = 0 case "十": if n == 0 { n = 1 } n = n * 10 num += n n = 0 case "一": n += 1 case "二": n += 2 case "三": n += 3 case "四": n += 4 case "五": n += 5 case "六": n += 6 case "七": n += 7 case "八": n += 8 case "九": n += 9 case "零": default: if n > 0 { num += n n = 0 } if num == 0 { numStr += word } else { numStr += strconv.Itoa(num) + word num = 0 } } } if n > 0 { num += n n = 0 } if num != 0 { numStr += strconv.Itoa(num) } return } func Sha1(data string) string { sha1 := sha1.New() sha1.Write([]byte(data)) return hex.EncodeToString(sha1.Sum([]byte(""))) } func GetVideoPlaySeconds(videoPath string) (playSeconds float64, err error) { cmd := `ffmpeg -i ` + videoPath + ` 2>&1 | grep 'Duration' | cut -d ' ' -f 4 | sed s/,//` out, err := exec.Command("bash", "-c", cmd).Output() if err != nil { return } outTimes := string(out) fmt.Println("outTimes:", outTimes) if outTimes != "" { timeArr := strings.Split(outTimes, ":") h := timeArr[0] m := timeArr[1] s := timeArr[2] hInt, err := strconv.Atoi(h) if err != nil { return playSeconds, err } mInt, err := strconv.Atoi(m) if err != nil { return playSeconds, err } s = strings.Trim(s, " ") s = strings.Trim(s, "\n") sInt, err := strconv.ParseFloat(s, 64) if err != nil { return playSeconds, err } playSeconds = float64(hInt)*3600 + float64(mInt)*60 + float64(sInt) } return } func GetMaxTradeCode(tradeCode string) (maxTradeCode string, err error) { tradeCode = strings.Replace(tradeCode, "W", "", -1) tradeCode = strings.Trim(tradeCode, " ") tradeCodeInt, err := strconv.Atoi(tradeCode) if err != nil { return } tradeCodeInt = tradeCodeInt + 1 maxTradeCode = fmt.Sprintf("W%06d", tradeCodeInt) return } // excel日期字段格式化 yyyy-mm-dd func ConvertToFormatDay(excelDaysString string) string { // 2006-01-02 距离 1900-01-01的天数 baseDiffDay := 38719 //在网上工具计算的天数需要加2天,什么原因没弄清楚 curDiffDay := excelDaysString b, _ := strconv.Atoi(curDiffDay) // 获取excel的日期距离2006-01-02的天数 realDiffDay := b - baseDiffDay //fmt.Println("realDiffDay:",realDiffDay) // 距离2006-01-02 秒数 realDiffSecond := realDiffDay * 24 * 3600 //fmt.Println("realDiffSecond:",realDiffSecond) // 2006-01-02 15:04:05距离1970-01-01 08:00:00的秒数 网上工具可查出 baseOriginSecond := 1136185445 resultTime := time.Unix(int64(baseOriginSecond+realDiffSecond), 0).Format("2006-01-02") return resultTime } func CheckPwd(pwd string) bool { compile := `([0-9a-z]+){6,12}|(a-z0-9]+){6,12}` reg := regexp.MustCompile(compile) flag := reg.MatchString(pwd) return flag } func GetMonthStartAndEnd(myYear string, myMonth string) (startDate, endDate string) { // 数字月份必须前置补零 if len(myMonth) == 1 { myMonth = "0" + myMonth } yInt, _ := strconv.Atoi(myYear) timeLayout := "2006-01-02 15:04:05" loc, _ := time.LoadLocation("Local") theTime, _ := time.ParseInLocation(timeLayout, myYear+"-"+myMonth+"-01 00:00:00", loc) newMonth := theTime.Month() t1 := time.Date(yInt, newMonth, 1, 0, 0, 0, 0, time.Local).Format("2006-01-02") t2 := time.Date(yInt, newMonth+1, 0, 0, 0, 0, 0, time.Local).Format("2006-01-02") return t1, t2 } // 移除字符串中的空格 func TrimStr(str string) (str2 string) { return strings.Replace(str, " ", "", -1) } // 字符串转换为time func StrTimeToTime(strTime string) time.Time { timeLayout := "2006-01-02 15:04:05" //转化所需模板 loc, _ := time.LoadLocation("Local") //重要:获取时区 resultTime, _ := time.ParseInLocation(timeLayout, strTime, loc) return resultTime } // GetOrmInReplace 获取orm的in查询替换?的方法 func GetOrmInReplace(num int) string { template := make([]string, num) for i := 0; i < num; i++ { template[i] = "?" } return strings.Join(template, ",") } // RevSlice 反转切片 func RevSlice(slice []int) []int { for i, j := 0, len(slice)-1; i < j; i, j = i+1, j-1 { slice[i], slice[j] = slice[j], slice[i] } return slice } // GetTimeSubDay 计算两个时间的自然日期差 func GetTimeSubDay(t1, t2 time.Time) int { var day int swap := false if t1.Unix() > t2.Unix() { t1, t2 = t2, t1 swap = true } t1_ := t1.Add(time.Duration(t2.Sub(t1).Milliseconds()%86400000) * time.Millisecond) day = int(t2.Sub(t1).Hours() / 24) // 计算在t1+两个时间的余数之后天数是否有变化 if t1_.Day() != t1.Day() { day += 1 } if swap { day = -day } return day } // GetDaysBetween2Date 计算两个日期之间相差几天 func GetDaysBetween2Date(format, date1Str, date2Str string) (int, error) { // 将字符串转化为Time格式 date1, err := time.ParseInLocation(format, date1Str, time.Local) if err != nil { return 0, err } // 将字符串转化为Time格式 date2, err := time.ParseInLocation(format, date2Str, time.Local) if err != nil { return 0, err } //计算相差天数 return int(date1.Sub(date2).Hours() / 24), nil } // MapSorter 对于map 排序 type MapSorter []Item type Item struct { Key int Val float64 } func NewMapSorter(m map[int]float64) MapSorter { ms := make(MapSorter, 0, len(m)) for k, v := range m { ms = append(ms, Item{k, v}) } return ms } func (ms MapSorter) Len() int { return len(ms) } func (ms MapSorter) Less(i, j int) bool { return ms[i].Val > ms[j].Val // 按值排序 //return ms[i].Key < ms[j].Key // 按键排序 } func (ms MapSorter) Swap(i, j int) { ms[i], ms[j] = ms[j], ms[i] } // InArrayByInt php中的in_array(判断Int类型的切片中是否存在该int值) func InArrayByInt(idIntList []int, searchId int) (has bool) { for _, id := range idIntList { if id == searchId { has = true return } } return } // InArrayByStr php中的in_array(判断String类型的切片中是否存在该string值) func InArrayByStr(idStrList []string, searchId string) (has bool) { for _, id := range idStrList { if id == searchId { has = true return } } return } // GetDateByDateType 通过dateType获取需要的开始/结束日期 func GetDateByDateType(dateType int, tmpStartDate, tmpEndDate string) (startDate, endDate string) { startDate = tmpStartDate endDate = tmpEndDate switch dateType { case 1: startDate = "2000-01-01" endDate = "" case 2: startDate = "2010-01-01" endDate = "" case 3: startDate = "2015-01-01" endDate = "" case 4: //startDate = strconv.Itoa(time.Now().Year()) + "-01-01" startDate = "2021-01-01" endDate = "" case 5: //startDate = startDate + "-01" //endDate = endDate + "-01" case 6: //startDate = startDate + "-01" endDate = "" case 7: startDate = "2018-01-01" endDate = "" case 8: startDate = "2019-01-01" endDate = "" case 9: startDate = "2020-01-01" endDate = "" case 11: startDate = "2022-01-01" endDate = "" } // 兼容日期错误 { if strings.Count(startDate, "-") == 1 { startDate = startDate + "-01" } if strings.Count(endDate, "-") == 1 { endDate = endDate + "-01" } } return } // GetDateByDateType2 通过dateType获取需要的开始/结束日期(日期类型:1:最近3月;2:最近6月;3:最近1年;4:最近2年;5:最近3年;6:最近5年;7:最近10年,8:自定义时间) func GetDateByDateType2(dateType int, currDate time.Time) (startDate time.Time) { switch dateType { case 1: startDate = currDate.AddDate(0, -3, 0) case 2: startDate = currDate.AddDate(0, -6, 0) case 3: startDate = currDate.AddDate(-1, 0, 0) case 4: startDate = currDate.AddDate(-2, 0, 0) case 5: startDate = currDate.AddDate(-3, 0, 0) case 6: startDate = currDate.AddDate(-5, 0, 0) case 7: startDate = currDate.AddDate(-10, 0, 0) } return } // GetCeilNewNum 保留n位有效数字的向上取整 // @params num 实际数据 // @params baseLen 需要保留的有效位数 func GetCeilNewNum(num float64, baseLen int) (newNum float64) { if num >= 1 { tmpNum := int(math.Ceil(num)) // 向上取整 str := strconv.Itoa(tmpNum) lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] newNumInt, _ := strconv.Atoi(newNumStr) newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) if newNum < num { newNumInt += 1 newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) } } else { newNum = float64(tmpNum) } return } else if num > 0 { // 这是小数 str := strconv.FormatFloat(num, 'f', -1, 64) // 去除小数点和负号 str = removeDecimalPoint(str) // 计算字符串长度 lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] newNumInt, _ := strconv.Atoi(newNumStr) newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() if newNum < num { newNumInt += 1 newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() } } else { newNum = num } } else if num > -1 { // 这是小数 str := strconv.FormatFloat(num, 'f', -1, 64) // 去除小数点和负号 str = removeDecimalPoint(str) // 计算字符串长度 lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] newNumInt, _ := strconv.Atoi(newNumStr) newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() newNum = -newNum if newNum < num { newNumInt -= 1 newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() newNum = -newNum } } else { newNum = num } if newNum == -0 { newNum = 0 } } else { // 小于等于-1 tmpNumFloat := math.Abs(num) tmpNum := int(math.Floor(tmpNumFloat)) // 向上取整 str := strconv.Itoa(tmpNum) lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] //fmt.Println("newNumStr:", newNumStr) newNumInt, _ := strconv.Atoi(newNumStr) newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) newNum = -newNum if newNum < num { newNumInt -= 1 newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) newNum = -newNum } } else { newNum = float64(-tmpNum) } } return } // GetFloorNewNum 保留n位有效数字的向下取整 // @params num 实际数据 // @params baseLen 需要保留的有效位数 func GetFloorNewNum(num float64, baseLen int) (newNum float64) { if num >= 1 { tmpNum := int(math.Floor(num)) // 向上取整 str := strconv.Itoa(tmpNum) lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] newNumInt, _ := strconv.Atoi(newNumStr) newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) if newNum < num { newNumInt -= 1 newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) } } else { newNum = float64(tmpNum) } return } else if num > 0 { // 这是小数 str := strconv.FormatFloat(num, 'f', -1, 64) // 去除小数点和负号 str = removeDecimalPoint(str) // 计算字符串长度 lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] newNumInt, _ := strconv.Atoi(newNumStr) newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() if newNum > num { newNumInt -= 1 newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() } } else { newNum = num } } else if num > -1 { // 这是小数 str := strconv.FormatFloat(num, 'f', -1, 64) // 去除小数点和负号 str = removeDecimalPoint(str) // 计算字符串长度 lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] newNumInt, _ := strconv.Atoi(newNumStr) newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() newNum = -newNum if newNum > num { newNumInt += 1 newNum, _ = decimal.NewFromInt(int64(newNumInt)).Div(decimal.NewFromFloat(math.Pow(10, float64(baseLen)))).Float64() newNum = -newNum } } else { newNum = num } if newNum == -0 { newNum = 0 } } else { // 小于等于-1 tmpNumFloat := math.Abs(num) tmpNum := int(math.Ceil(tmpNumFloat)) // 向上取整 str := strconv.Itoa(tmpNum) lenStr := len(str) if lenStr > baseLen { newNumStr := str[0:baseLen] //fmt.Println("newNumStr:", newNumStr) newNumInt, _ := strconv.Atoi(newNumStr) newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) newNum = -newNum if newNum > num { newNumInt += 1 newNum = float64(newNumInt) * math.Pow(10, float64(lenStr-baseLen)) newNum = -newNum } } else { newNum = float64(-tmpNum) } } return } // 去除小数点和负号 func removeDecimalPoint(str string) string { // 去除小数点 str = str[strings.Index(str, ".")+1:] return str } 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 } func GetDateByDateTypeV2(dateType int, tmpStartDate, tmpEndDate string, startYear int, latestDate time.Time) (startDate, endDate string) { startDate = tmpStartDate endDate = tmpEndDate switch dateType { case 1: startDate = "2000-01-01" endDate = "" case 2: startDate = "2010-01-01" endDate = "" case 3: startDate = "2015-01-01" endDate = "" case 4: //startDate = strconv.Itoa(time.Now().Year()) + "-01-01" startDate = "2021-01-01" endDate = "" case 5: //startDate = startDate + "-01" //endDate = endDate + "-01" case 6: //startDate = startDate + "-01" endDate = "" case 7: startDate = "2018-01-01" endDate = "" case 8: startDate = "2019-01-01" endDate = "" case 9: startDate = "2020-01-01" endDate = "" case 11: startDate = "2022-01-01" endDate = "" case 12: startDate = "2023-01-01" endDate = "" case 13: startDate = "2024-01-01" endDate = "" case DateTypeNYears: if startYear == 0 { //默认取最近5年 startYear = 5 } if latestDate.IsZero() { return } startDate = latestDate.AddDate(-startYear, 0, 0).Format(FormatDate) endDate = "" } // 兼容日期错误 { if strings.Count(startDate, "-") == 1 { startDate = startDate + "-01" } if strings.Count(endDate, "-") == 1 { endDate = endDate + "-01" } } return } func GetColorMap() map[int]string { colorMap := make(map[int]string) colors := []string{"#0000FF", "#FF0000", "#999999", "#000000", "#7CB5EC", "#90ED7D", "#F7A35C", "#8085E9", "#F15C80", "#E4D354", "#2B908F", "#F45B5B", "#91E8E1", "#FDA8C7", "#8A4294", "#578B5A", "#0033FF", "#849EC1", "#FFDF0C", "#005496", "#00F0FF", "#4D535B", "#4F4C34", "#804141", "#86BABD", "#8AA3FF", "#960000", "#A173DB", "#A39340", "#CE814A", "#D1D2E6", "#EAB7B7", "#FF2E7A", "#FF4AF8", "#FF785B", "#FF9696", "#FFA800", "#FFBC97", "#FFDFDF"} for k, v := range colors { colorMap[k] = v } return colorMap } // GetDaysDiff1900 计算日期距离1900-01-01的天数 func GetDaysDiff1900(date string) int { // 将字符串转换为时间类型 //从1899年12月30日开始是因为Excel的日期计算是基于1900年1月1日的,而1900年并不是闰年,因此Excel日期计算存在一个错误。为了修正这个错误, //我们将时间回溯到1899年12月30日,这样在进行日期计算时可以正确地处理Excel日期。 tStart, err := time.ParseInLocation(FormatDate, "1899-12-30", time.Local) if err != nil { return 0 } tEnd, err := time.ParseInLocation(FormatDate, date, time.Local) if err != nil { return 0 } // 计算两个日期之间的天数差值 duration := tEnd.Sub(tStart).Hours() / 24 days := int(duration) return days } func ReplaceFormulaByTagMap(valTagMap map[string]int, formulaStr string) string { funMap := getFormulaMap() for k, v := range funMap { formulaStr = strings.Replace(formulaStr, k, v, -1) } replaceCount := 0 for tag, val := range valTagMap { dvStr := fmt.Sprintf("%v", val) formulaStr = strings.Replace(formulaStr, tag, dvStr, -1) replaceCount++ } for k, v := range funMap { formulaStr = strings.Replace(formulaStr, v, k, -1) } return formulaStr } // GetFrequencyEn 获取频度的英文版 func GetFrequencyEn(frequency string) (frequencyEn string) { switch frequency { case "日度": frequencyEn = "day" return case "周度": frequencyEn = "week" return case "旬度": frequencyEn = "ten days" return case "月度": frequencyEn = "month" return case "季度": frequencyEn = "quarter" return case "年度": frequencyEn = "year" return } return } // DateConvMysqlConvMongo // @Description: 将mysql中的日期比较符转换成mongo中的日期比较符 // @author: Roc // @datetime 2024-05-08 11:03:26 // @param dateCon string func DateConvMysqlConvMongo(dateCon string) string { cond := "" switch dateCon { case "=": cond = "$eq" case "<": cond = "$lt" case "<=": cond = "$lte" case ">": cond = "$gt" case ">=": cond = "$gte" } return cond } func DesBase64Decrypt(crypted []byte, desKey string) []byte { result, _ := base64.StdEncoding.DecodeString(string(crypted)) remain := len(result) % 8 if remain > 0 { mod := 8 - remain for i := 0; i < mod; i++ { result = append(result, 0) } } origData, err := TripleDesDecrypt(result, []byte(desKey)) if err != nil { panic(any(err)) } return origData } // // 3DES解密 func TripleDesDecrypt(crypted, key []byte) ([]byte, error) { block, err := des.NewTripleDESCipher(key) if err != nil { return nil, err } blockMode := cipher.NewCBCDecrypter(block, key[:8]) origData := make([]byte, len(crypted)) // origData := crypted blockMode.CryptBlocks(origData, crypted) origData = PKCS5UnPadding(origData) // origData = ZeroUnPadding(origData) return origData, nil } func PKCS5UnPadding(origData []byte) []byte { length := len(origData) // 去掉最后一个字节 unpadding 次 unpadding := int(origData[length-1]) return origData[:(length - unpadding)] } func TimeTransferString(format string, t time.Time) string { str := t.Format(format) if t.IsZero() { return "" } return str } // handleSystemAppointDateT // @Description: 处理系统日期相关的指定频率(所在周/旬/月/季/半年/年的最后/最早一天) // @author: Roc // @datetime2023-10-27 09:31:35 // @param Frequency string // @param Day string // @return date string // @return err error // @return errMsg string func HandleSystemAppointDateT(currDate time.Time, appointDay, frequency string) (date string, err error, errMsg string) { //currDate := time.Now() switch frequency { case "本周": day := int(currDate.Weekday()) if day == 0 { // 周日 day = 7 } num := 0 switch appointDay { case "周一": num = 1 case "周二": num = 2 case "周三": num = 3 case "周四": num = 4 case "周五": num = 5 case "周六": num = 6 case "周日": num = 7 } day = num - day date = currDate.AddDate(0, 0, day).Format(FormatDate) case "本旬": day := currDate.Day() var tmpDate time.Time switch appointDay { case "第一天": if day <= 10 { tmpDate = time.Date(currDate.Year(), currDate.Month(), 1, 0, 0, 0, 0, currDate.Location()) } else if day <= 20 { tmpDate = time.Date(currDate.Year(), currDate.Month(), 11, 0, 0, 0, 0, currDate.Location()) } else { tmpDate = time.Date(currDate.Year(), currDate.Month(), 21, 0, 0, 0, 0, currDate.Location()) } case "最后一天": if day <= 10 { tmpDate = time.Date(currDate.Year(), currDate.Month(), 10, 0, 0, 0, 0, currDate.Location()) } else if day <= 20 { tmpDate = time.Date(currDate.Year(), currDate.Month(), 20, 0, 0, 0, 0, currDate.Location()) } else { tmpDate = time.Date(currDate.Year(), currDate.Month()+1, 1, 0, 0, 0, 0, currDate.Location()).AddDate(0, 0, -1) } } date = tmpDate.Format(FormatDate) case "本月": var tmpDate time.Time switch appointDay { case "第一天": tmpDate = time.Date(currDate.Year(), currDate.Month(), 1, 0, 0, 0, 0, currDate.Location()) case "最后一天": tmpDate = time.Date(currDate.Year(), currDate.Month()+1, 1, 0, 0, 0, 0, currDate.Location()).AddDate(0, 0, -1) } date = tmpDate.Format(FormatDate) case "本季": month := currDate.Month() var tmpDate time.Time switch appointDay { case "第一天": if month <= 3 { tmpDate = time.Date(currDate.Year(), 1, 1, 0, 0, 0, 0, currDate.Location()) } else if month <= 6 { tmpDate = time.Date(currDate.Year(), 4, 1, 0, 0, 0, 0, currDate.Location()) } else if month <= 9 { tmpDate = time.Date(currDate.Year(), 7, 1, 0, 0, 0, 0, currDate.Location()) } else { tmpDate = time.Date(currDate.Year(), 10, 1, 0, 0, 0, 0, currDate.Location()) } case "最后一天": if month <= 3 { tmpDate = time.Date(currDate.Year(), 3, 31, 0, 0, 0, 0, currDate.Location()) } else if month <= 6 { tmpDate = time.Date(currDate.Year(), 6, 30, 0, 0, 0, 0, currDate.Location()) } else if month <= 9 { tmpDate = time.Date(currDate.Year(), 9, 30, 0, 0, 0, 0, currDate.Location()) } else { tmpDate = time.Date(currDate.Year(), 12, 31, 0, 0, 0, 0, currDate.Location()) } } date = tmpDate.Format(FormatDate) case "本半年": month := currDate.Month() var tmpDate time.Time switch appointDay { case "第一天": if month <= 6 { tmpDate = time.Date(currDate.Year(), 1, 1, 0, 0, 0, 0, currDate.Location()) } else { tmpDate = time.Date(currDate.Year(), 7, 1, 0, 0, 0, 0, currDate.Location()) } case "最后一天": if month <= 6 { tmpDate = time.Date(currDate.Year(), 6, 30, 0, 0, 0, 0, currDate.Location()) } else { tmpDate = time.Date(currDate.Year(), 12, 31, 0, 0, 0, 0, currDate.Location()) } } date = tmpDate.Format(FormatDate) case "本年": var tmpDate time.Time switch appointDay { case "第一天": tmpDate = time.Date(currDate.Year(), 1, 1, 0, 0, 0, 0, currDate.Location()) case "最后一天": tmpDate = time.Date(currDate.Year(), 12, 31, 0, 0, 0, 0, currDate.Location()) } date = tmpDate.Format(FormatDate) default: errMsg = "错误的日期频度:" + frequency err = errors.New(errMsg) return } return } func CompareFloatByOpStrings(op string, a, b float64) bool { switch op { case "=": return a == b case ">": return a > b case ">=": return a >= b case "<=": return a <= b case "<": return a < b } return false } // RoundNumber 保留小数位数 func RoundNumber(num string, decimalPlaces int, hasPercent bool) string { numDecimal, _ := decimal.NewFromString(num) if hasPercent { numDecimal = numDecimal.Mul(decimal.NewFromInt(100)) } numStr := numDecimal.Round(int32(decimalPlaces)).StringFixed(int32(decimalPlaces)) if hasPercent { numStr += "%" } return numStr }