• 👏 全面、高效、可复用
• 💪 100+常用go工具函数，支持string、slice、datetime、net、crypt...
• 💅 只依赖go标准库
• 🌍 所有导出函数单元测试覆盖率100%

go get github.com/duke-git/lancet

lancet是以包的结构组织代码的，使用时需要导入相应的包名。例如：如果使用字符串相关函数，需要导入strutil包:

import "github.com/duke-git/lancet/strutil"

此处以字符串工具函数ReverseStr（逆序字符串）为例，需要导入strutil包:

package main

import (
    "fmt"
    "github.com/duke-git/lancet/strutil"
)

func main() {
    s := "hello"
    rs := strutil.ReverseStr(s)
    fmt.Println(rs) //olleh
}

API文档

1. convertor数据转换包

• 转换函数支持常用数据类型之间的转换
• 导入包：import "github.com/duke-git/lancet/convertor"

package main

import (
    "fmt"
    "github.com/duke-git/lancet/convertor"
)

func main() {
    s := "12.3"
    f, err := convertor.ToFloat(s)
    if err != nil {
        fmt.Errorf("error is %s", err.Error())
    }
    fmt.Println(f) // 12.3
}

• 函数列表：

func ColorHexToRGB(colorHex string) (red, green, blue int) //颜色值16进制转rgb
func ColorRGBToHex(red, green, blue int) string //颜色值rgb转16进制
func ToBool(s string) (bool, error)  //字符串转成Bool
func ToBytes(data interface{}) ([]byte, error) //interface转成byte slice
func ToChar(s string) []string //字符串转成字符slice
func ToFloat(value interface{}) (float64, error) //interface转成float64
func ToInt(value interface{}) (int64, error) //interface转成int64
func ToJson(value interface{}) (string, error) //interface转成json string
func ToString(value interface{}) string //interface转成string
func StructToMap(value interface{}) (map[string]interface{}, error) //struct串转成map, 需要设置struct tag `json`

2. cryptor加解密包

• 加密函数支持md5, hmac, aes, des, ras
• 导入包：import "github.com/duke-git/lancet/cryptor"

package main

import (
    "fmt"
    "github.com/duke-git/lancet/cryptor"
)

func main() {
    data := "hello"
    key := "abcdefghijklmnop"

    encrypted := cryptor.AesCbcEncrypt([]byte(data), []byte(key))
    decrypted := cryptor.AesCbcDecrypt(encrypted, []byte(key))
    fmt.Println(string(decrypted)) // hello
}

• 函数列表：

func AesEcbEncrypt(data, key []byte) []byte //AES ECB模式加密
func AesEcbDecrypt(encrypted, key []byte) []byte //AES ECB模式解密
func AesCbcEncrypt(data, key []byte) []byte //AES CBC模式加密
func AesCbcDecrypt(encrypted, key []byte) []byte //AES CBC模式解密
func AesCtrCrypt(data, key []byte) []byte //AES CTR模式加密/解密
func AesCfbEncrypt(data, key []byte) []byte //AES CFB模式加密
func AesCfbDecrypt(encrypted, key []byte) []byte //AES CFB模式解密
func AesOfbEncrypt(data, key []byte) []byte //AES OFB模式加密
func AesOfbDecrypt(data, key []byte) []byte //AES OFB模式解密
func Base64StdEncode(s string) string //base64编码
func Base64StdDecode(s string) string //base64解码
func DesCbcEncrypt(data, key []byte) []byte //DES CBC模式加密
func DesCbcDecrypt(encrypted, key []byte) []byte //DES CBC模式解密
func DesCtrCrypt(data, key []byte) []byte //DES CTR模式加密/解密
func DesCfbEncrypt(data, key []byte) []byte //DES CFB模式加密
func DesCfbDecrypt(encrypted, key []byte) []byte //DES CFB模式解密
func DesOfbEncrypt(data, key []byte) []byte //DES OFB模式加密
func DesOfbDecrypt(data, key []byte) []byte //DES OFB模式解密
func HmacMd5(data, key string) string //获取hmac md5值
func HmacSha1(data, key string) string //获取hmac sha1值
func HmacSha256(data, key string) string //获取hmac sha256值
func HmacSha512(data, key string) string //获取hmac sha512值
func Sha1(data string) string //获取sha1值
func Sha256(data string) string //获取sha256值
func Sha512(data string) string //获取sha512值
func GenerateRsaKey(keySize int, priKeyFile, pubKeyFile string) //生成RSA私钥文件
func RsaEncrypt(data []byte, pubKeyFileName string) []byte //RSA加密
func RsaDecrypt(data []byte, privateKeyFileName string) []byte //RSA解密

3. datetime日期时间处理包

• 处理日期时间
• 导入包：import "github.com/duke-git/lancet/datetime"

package main

import (
    "fmt"
    "github.com/duke-git/lancet/datetime"
)

func main() {
    now := time.Now()
    s := datetime.FormatTimeToStr(now, "yyyy-mm-dd hh:mm:ss")
    fmt.Println(s) // 2021-11-24 11:16:55
}

• 函数列表：

func AddDay(t time.Time, day int64) time.Time //加减天数
func AddHour(t time.Time, hour int64) time.Time //加减小时数
func AddMinute(t time.Time, minute int64) time.Time //加减分钟数
func GetNowDate() string  //获取当天日期 格式yyyy-mm-dd
func GetNowTime() string //获取当前时间 格式hh:mm:ss
func GetNowDateTime() string //获取当前日期时间 格式yyyy-mm-dd hh:mm:ss
func GetZeroHourTimestamp() int64 //获取当天零时时间戳（00:00)
func GetNightTimestamp() int64 //获取当天23时时间戳（23:59)
func FormatTimeToStr(t time.Time, format string) string //时间格式化字符串
func FormatStrToTime(str, format string) time.Time //字符串转换成时间

4. fileutil文件处理包

• 文件处理常用函数
• 导入包：import "github.com/duke-git/lancet/fileutil"

package main

import (
    "fmt"
    "github.com/duke-git/lancet/fileutil"
)

func main() {
    fmt.Println(fileutil.IsDir("./")) // true
}

• 函数列表：

func IsExist(path string) bool  //判断文件/目录是否存在
func CreateFile(path string) bool //创建文件
func IsDir(path string) bool //判断是否为目录
func RemoveFile(path string) error //删除文件
func CopyFile(srcFilePath string, dstFilePath string) error //复制文件
func ListFileNames(path string) ([]string, error) //列出目录下所有文件名称

5. formatter格式化处理包

• 格式化相关处理函数
• 导入包：import "github.com/duke-git/lancet/formatter"

package main

import (
    "fmt"
    "github.com/duke-git/lancet/formatter"
)

func main() {
     fmt.Println(formatter.Comma("12345", ""))   // "12,345"
     fmt.Println(formatter.Comma(12345.67, "¥")) // "¥12,345.67"
}

• 函数列表：

func Comma(v interface{}, symbol string) string  //用逗号每隔3位分割数字/字符串

6. netutil网络处理包

• 处理ip, http请求相关函数
• 导入包：import "github.com/duke-git/lancet/netutil"
• http方法params参数顺序：header, query string, body, httpclient

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "github.com/duke-git/lancet/netutil"
)

func main() {
    url := "https://gutendex.com/books?"
    header := make(map[string]string)
    header["Content-Type"] = "application/json"
    queryParams := make(map[string]interface{})
    queryParams["ids"] = "1"

    resp, err := netutil.HttpGet(url, header, queryParams)
    if err != nil {
       log.Fatal(err)
    }

    body, _ := ioutil.ReadAll(resp.Body)
    fmt.Println("response: ", resp.StatusCode, string(body))
}

• 函数列表：

func GetInternalIp() string //获取内部ip
func GetPublicIpInfo() (*PublicIpInfo, error) //获取公共ip信息: country, region, isp, city, lat, lon, ip
func IsPublicIP(IP net.IP) bool //判断ip是否为公共ip
func HttpGet(url string, params ...interface{}) (*http.Response, error) //http get请求
func HttpPost(url string, params ...interface{}) (*http.Response, error) //http post请求
func HttpPut(url string, params ...interface{}) (*http.Response, error) //http put请求
func HttpDelete(url string, params ...interface{}) (*http.Response, error) //http delete请求
func HttpPatch(url string, params ...interface{}) (*http.Response, error) //http patch请求
func ConvertMapToQueryString(param map[string]interface{}) string //将map转换成url query string

7. random随机数处理包

• 生成和处理随机数
• 导入包：import "github.com/duke-git/lancet/random"

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "github.com/duke-git/lancet/random"
)

func main() {
    randStr := random.RandString(6)
    fmt.Println(randStr)
}

• 函数列表：

func RandBytes(length int) []byte //生成随机[]byte
func RandInt(min, max int) int //生成随机int
func RandString(length int) string //生成随机string

8. slice切片操作包

• 切片操作相关函数
• 导入包：import "github.com/duke-git/lancet/slice"
• 由于go目前对范型支持不稳定，slice处理函数参数和返回值大部分为interface{}, 待范型特性稳定后，会重构相关函数

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "github.com/duke-git/lancet/slice"
)

func main() {
    nums := []int{1, 4, 3, 4, 6, 7, 3}
    uniqueNums, _ := slice.IntSlice(slice.Unique(nums))
    fmt.Println(uniqueNums) //[1 4 3 6 7]
}

• 函数列表：

func Contain(slice interface{}, value interface{}) bool //判断slice是否包含value
func Chunk(slice []interface{}, size int) [][]interface{} //均分slice
func ConvertSlice(originalSlice interface{}, newSliceType reflect.Type) interface{} //将originalSlice转换为 newSliceType
func Difference(slice1, slice2 interface{}) interface{} //返回
func DeleteByIndex(slice interface{}, start int, end ...int) (interface{}, error) //删除切片中start到end位置的值
func Filter(slice, function interface{}) interface{} //过滤slice, 函数签名：func(index int, value interface{}) bool
func IntSlice(slice interface{}) ([]int, error) //转成int切片
func InterfaceSlice(slice interface{}) []interface{} //转成interface{}切片
func InsertByIndex(slice interface{}, index int, value interface{}) (interface{}, error) //在切片中index位置插入value
func Map(slice, function interface{}) interface{} //遍历切片, 函数签名：func(index int, value interface{}) interface{}
func ReverseSlice(slice interface{}) //反转切片
func Reduce(slice, function, zero interface{}) interface{} //切片reduce操作， 函数签名：func(index int, value1, value2 interface{}) interface{}
func SortByField(slice interface{}, field string, sortType ...string) error //对struct切片进行排序
func StringSlice(slice interface{}) []string //转为string切片
func Unique(slice interface{}) interface{} //去重切片
func UpdateByIndex(slice interface{}, index int, value interface{}) (interface{}, error) //在切片中index位置更新value

9. strutil字符串处理包

• 字符串操作相关函数
• 导入包：import "github.com/duke-git/lancet/strutil"

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "github.com/duke-git/lancet/strutil"
)

func main() {
    str := "Foo-Bar"
    camelCaseStr := strutil.CamelCase(str)
    fmt.Println(camelCaseStr) //fooBar
}

• 函数列表：

func After(s, char string) string //截取字符串中char第一次出现之后的字符串
func AfterLast(s, char string) string //截取字符串中char最后一次出现之后的字符串
func Before(s, char string) string //截取字符串中char第一次出现之前的字符串
func BeforeLast(s, char string) string //截取字符串中char最后一次出现之前的字符串
func CamelCase(s string) string //字符串转为cameCase, "foo bar" -> "fooBar"
func Capitalize(s string) string //字符串转为Capitalize, "fOO" -> "Foo"
func IsString(v interface{}) bool //判断是否是字符串
func KebabCase(s string) string //字符串转为KebabCase, "foo_Bar" -> "foo-bar"
func LowerFirst(s string) string //字符串的第一个字母转为小写字母
func PadEnd(source string, size int, padStr string) string //字符串末尾填充size个字符
func PadStart(source string, size int, padStr string) string//字符串开头填充size个字符
func ReverseStr(s string) string //字符串逆袭
func SnakeCase(s string) string //字符串转为SnakeCase, "fooBar" -> "foo_bar"

10. validator验证器包

• 数据校验相关函数
• 导入包：import "github.com/duke-git/lancet/validator"

package main

import (
    "fmt"
    "io/ioutil"
    "log"
    "github.com/duke-git/lancet/validator"
)

func main() {
    str := "Foo-Bar"
    isAlpha := validator.IsAlpha(str)
    fmt.Println(isAlpha) //false
}

• 函数列表：

func ContainChinese(s string) bool //判断字符串中是否含有中文字符
func IsAlpha(s string) bool //判断字符串是否只含有字母
func IsBase64(base64 string) bool //判断字符串是base64
func IsChineseMobile(mobileNum string) bool //判断字符串是否是手机号
func IsChineseIdNum(id string) bool //判断字符串是否是身份证号
func IsChinesePhone(phone string) bool //判断字符串是否是座机电话号码
func IsCreditCard(creditCart string) bool //判断字符串是否是信用卡
func IsDns(dns string) bool //判断字符串是否是DNS
func IsEmail(email string) bool //判断字符串是否是邮箱
func IsEmptyString(s string) bool //判断字符串是否为空
func IsFloatStr(s string) bool //判断字符串是否可以转成float
func IsNumberStr(s string) bool //判断字符串是否可以转成数字
func IsRegexMatch(s, regex string) bool //判断字符串是否match正则表达式
func IsIntStr(s string) bool //判断字符串是否可以转成整数
func IsIp(ipstr string) bool //判断字符串是否是ip
func IsIpV4(ipstr string) bool //判断字符串是否是ipv4
func IsIpV6(ipstr string) bool //判断字符串是否是ipv6
func IsStrongPassword(password string, length int) bool //判断字符串是否是强密码（大小写字母+数字+特殊字符）
func IsWeakPassword(password string) bool //判断字符串是否是弱密码（只有字母或数字）