diff --git a/custom.go b/custom.go
index 103ada9..8b217aa 100644
--- a/custom.go
+++ b/custom.go
@@ -1,203 +1,58 @@
 package gostring
 
 import (
-	"errors"
-	"fmt"
-	"go.dtapp.net/gorandom"
 	"go.dtapp.net/gotime"
 )
 
-// GenerateId 生成18一编号
+// GenerateId 生成18位编号
 func GenerateId(customId string) string {
 	currentTime := gotime.Current().Format()
-	one, err := generateIdOne(customId, currentTime)
+	one, err := generateIdOne(customId, currentTime, 18)
 	if err == nil {
 		return one
 	}
-	two, err := generateIdTwo(customId, currentTime)
+	two, err := generateIdTwo(customId, currentTime, 18)
 	if err == nil {
 		return two
 	}
-	three, err := generateIdThree(customId, currentTime)
+	three, err := generateIdThree(customId, currentTime, 18)
 	if err == nil {
 		return three
 	}
-	four, err := generateIdFour(customId, currentTime)
+	four, err := generateIdFour(customId, currentTime, 18)
 	if err == nil {
 		return four
 	}
-	five, err := generateIdFive(customId, currentTime)
+	five, err := generateIdFive(customId, currentTime, 18)
 	if err == nil {
 		return five
 	}
-	six, err := generateIdSix(customId)
+	six, err := generateIdSix(customId, 18)
 	return six
 }
 
-// GenerateIdAndTime 生成18一编号
+// GenerateIdAndTime 生成18位编号
 func GenerateIdAndTime(customId, customTime string) string {
-	one, err := generateIdOne(customId, customTime)
+	one, err := generateIdOne(customId, customTime, 18)
 	if err == nil {
 		return one
 	}
-	two, err := generateIdTwo(customId, customTime)
+	two, err := generateIdTwo(customId, customTime, 18)
 	if err == nil {
 		return two
 	}
-	three, err := generateIdThree(customId, customTime)
+	three, err := generateIdThree(customId, customTime, 18)
 	if err == nil {
 		return three
 	}
-	four, err := generateIdFour(customId, customTime)
+	four, err := generateIdFour(customId, customTime, 18)
 	if err == nil {
 		return four
 	}
-	five, err := generateIdFive(customId, customTime)
+	five, err := generateIdFive(customId, customTime, 18)
 	if err == nil {
 		return five
 	}
-	six, err := generateIdSix(customId)
+	six, err := generateIdSix(customId, 18)
 	return six
 }
-
-// 生成18位时间[年月日时分]唯一编号
-func generateIdOne(customId, setTime string) (string, error) {
-
-	var (
-		newRandomLength = 0             // 随机数据长度
-		customIdLength  = len(customId) // 自定义长度
-	)
-
-	const (
-		randomLength     = 5               // 随机数据长度
-		dataLength       = 18              // 默认数据长度
-		dateFormat       = "200601021504"  // 时间格式
-		dateFormatLength = len(dateFormat) // 时间格式长度
-	)
-
-	// 重新计算随机数据长度
-	newRandomLength = dataLength - (dateFormatLength + customIdLength)
-
-	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
-		return "", errors.New("没有满足条件")
-	}
-	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
-}
-
-// 生成18位时间[年月日时]唯一编号
-func generateIdTwo(customId, setTime string) (string, error) {
-
-	var (
-		newRandomLength = 0             // 随机数据长度
-		customIdLength  = len(customId) // 自定义长度
-	)
-
-	const (
-		randomLength     = 5               // 随机数据长度
-		dataLength       = 18              // 默认数据长度
-		dateFormat       = "2006010215"    // 时间格式
-		dateFormatLength = len(dateFormat) // 时间格式长度
-	)
-
-	// 重新计算随机数据长度
-	newRandomLength = dataLength - (dateFormatLength + customIdLength)
-
-	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
-		return "", errors.New("没有满足条件")
-	}
-	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
-}
-
-// 生成18位时间[年月日]唯一编号
-func generateIdThree(customId, setTime string) (string, error) {
-
-	var (
-		newRandomLength = 0             // 随机数据长度
-		customIdLength  = len(customId) // 自定义长度
-	)
-
-	const (
-		randomLength     = 5               // 随机数据长度
-		dataLength       = 18              // 默认数据长度
-		dateFormat       = "20060102"      // 时间格式
-		dateFormatLength = len(dateFormat) // 时间格式长度
-	)
-
-	// 重新计算随机数据长度
-	newRandomLength = dataLength - (dateFormatLength + customIdLength)
-
-	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
-		return "", errors.New("没有满足条件")
-	}
-	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
-}
-
-// 生成18位时间[年月]唯一编号
-func generateIdFour(customId, setTime string) (string, error) {
-
-	var (
-		newRandomLength = 0             // 随机数据长度
-		customIdLength  = len(customId) // 自定义长度
-	)
-
-	const (
-		randomLength     = 5               // 随机数据长度
-		dataLength       = 18              // 默认数据长度
-		dateFormat       = "200601"        // 时间格式
-		dateFormatLength = len(dateFormat) // 时间格式长度
-	)
-
-	// 重新计算随机数据长度
-	newRandomLength = dataLength - (dateFormatLength + customIdLength)
-
-	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
-		return "", errors.New("没有满足条件")
-	}
-	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
-}
-
-// 生成18位时间[年]唯一编号
-func generateIdFive(customId, setTime string) (string, error) {
-
-	var (
-		newRandomLength = 0             // 随机数据长度
-		customIdLength  = len(customId) // 自定义长度
-	)
-
-	const (
-		randomLength     = 5               // 随机数据长度`
-		dataLength       = 18              // 默认数据长度
-		dateFormat       = "2006"          // 时间格式
-		dateFormatLength = len(dateFormat) // 时间格式长度
-	)
-
-	// 重新计算随机数据长度
-	newRandomLength = dataLength - (dateFormatLength + customIdLength)
-
-	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
-		return "", errors.New("没有满足条件")
-	}
-	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
-}
-
-// 生成18位随机唯一编号
-func generateIdSix(customId string) (string, error) {
-
-	var (
-		newRandomLength = 0             // 随机数据长度
-		customIdLength  = len(customId) // 自定义长度
-	)
-
-	const (
-		randomLength = 5  // 随机数据长度
-		dataLength   = 18 // 默认数据长度
-	)
-
-	// 重新计算随机数据长度
-	newRandomLength = dataLength - customIdLength
-
-	if (customIdLength > dataLength) || (customIdLength == dataLength) || (newRandomLength < randomLength) {
-		return "", errors.New("没有满足条件")
-	}
-	return fmt.Sprintf("%v%s", customId, gorandom.Numeric(newRandomLength)), nil
-}
diff --git a/custom_common.go b/custom_common.go
new file mode 100644
index 0000000..613b597
--- /dev/null
+++ b/custom_common.go
@@ -0,0 +1,144 @@
+package gostring
+
+import (
+	"errors"
+	"fmt"
+	"go.dtapp.net/gorandom"
+	"go.dtapp.net/gotime"
+)
+
+// 生成18位时间[年月日时分]唯一编号
+func generateIdOne(customId, setTime string, dataLength int) (string, error) {
+
+	var (
+		newRandomLength = 0             // 随机数据长度
+		customIdLength  = len(customId) // 自定义长度
+	)
+
+	const (
+		randomLength     = 5               // 随机数据长度
+		dateFormat       = "200601021504"  // 时间格式
+		dateFormatLength = len(dateFormat) // 时间格式长度
+	)
+
+	// 重新计算随机数据长度
+	newRandomLength = dataLength - (dateFormatLength + customIdLength)
+
+	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
+		return "", errors.New("没有满足条件")
+	}
+	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
+}
+
+// 生成18位时间[年月日时]唯一编号
+func generateIdTwo(customId, setTime string, dataLength int) (string, error) {
+
+	var (
+		newRandomLength = 0             // 随机数据长度
+		customIdLength  = len(customId) // 自定义长度
+	)
+
+	const (
+		randomLength     = 5               // 随机数据长度
+		dateFormat       = "2006010215"    // 时间格式
+		dateFormatLength = len(dateFormat) // 时间格式长度
+	)
+
+	// 重新计算随机数据长度
+	newRandomLength = dataLength - (dateFormatLength + customIdLength)
+
+	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
+		return "", errors.New("没有满足条件")
+	}
+	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
+}
+
+// 生成18位时间[年月日]唯一编号
+func generateIdThree(customId, setTime string, dataLength int) (string, error) {
+
+	var (
+		newRandomLength = 0             // 随机数据长度
+		customIdLength  = len(customId) // 自定义长度
+	)
+
+	const (
+		randomLength     = 5               // 随机数据长度
+		dateFormat       = "20060102"      // 时间格式
+		dateFormatLength = len(dateFormat) // 时间格式长度
+	)
+
+	// 重新计算随机数据长度
+	newRandomLength = dataLength - (dateFormatLength + customIdLength)
+
+	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
+		return "", errors.New("没有满足条件")
+	}
+	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
+}
+
+// 生成18位时间[年月]唯一编号
+func generateIdFour(customId, setTime string, dataLength int) (string, error) {
+
+	var (
+		newRandomLength = 0             // 随机数据长度
+		customIdLength  = len(customId) // 自定义长度
+	)
+
+	const (
+		randomLength     = 5               // 随机数据长度
+		dateFormat       = "200601"        // 时间格式
+		dateFormatLength = len(dateFormat) // 时间格式长度
+	)
+
+	// 重新计算随机数据长度
+	newRandomLength = dataLength - (dateFormatLength + customIdLength)
+
+	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
+		return "", errors.New("没有满足条件")
+	}
+	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
+}
+
+// 生成18位时间[年]唯一编号
+func generateIdFive(customId, setTime string, dataLength int) (string, error) {
+
+	var (
+		newRandomLength = 0             // 随机数据长度
+		customIdLength  = len(customId) // 自定义长度
+	)
+
+	const (
+		randomLength     = 5               // 随机数据长度`
+		dateFormat       = "2006"          // 时间格式
+		dateFormatLength = len(dateFormat) // 时间格式长度
+	)
+
+	// 重新计算随机数据长度
+	newRandomLength = dataLength - (dateFormatLength + customIdLength)
+
+	if (dateFormatLength+customIdLength > dataLength) || (dateFormatLength+customIdLength == dataLength) || (newRandomLength < randomLength) {
+		return "", errors.New("没有满足条件")
+	}
+	return fmt.Sprintf("%v%s%s", customId, gotime.SetCurrentParse(setTime).SetFormat(dateFormat), gorandom.Numeric(newRandomLength)), nil
+}
+
+// 生成18位随机唯一编号
+func generateIdSix(customId string, dataLength int) (string, error) {
+
+	var (
+		newRandomLength = 0             // 随机数据长度
+		customIdLength  = len(customId) // 自定义长度
+	)
+
+	const (
+		randomLength = 5 // 随机数据长度
+	)
+
+	// 重新计算随机数据长度
+	newRandomLength = dataLength - customIdLength
+
+	if (customIdLength > dataLength) || (customIdLength == dataLength) || (newRandomLength < randomLength) {
+		return "", errors.New("没有满足条件")
+	}
+	return fmt.Sprintf("%v%s", customId, gorandom.Numeric(newRandomLength)), nil
+}
diff --git a/custom_length.go b/custom_length.go
new file mode 100644
index 0000000..a17d760
--- /dev/null
+++ b/custom_length.go
@@ -0,0 +1,56 @@
+package gostring
+
+import "go.dtapp.net/gotime"
+
+// GenerateIdLength 生成自定义长度编号
+func GenerateIdLength(customId string, dataLength int) string {
+	currentTime := gotime.Current().Format()
+	one, err := generateIdOne(customId, currentTime, dataLength)
+	if err == nil {
+		return one
+	}
+	two, err := generateIdTwo(customId, currentTime, dataLength)
+	if err == nil {
+		return two
+	}
+	three, err := generateIdThree(customId, currentTime, dataLength)
+	if err == nil {
+		return three
+	}
+	four, err := generateIdFour(customId, currentTime, dataLength)
+	if err == nil {
+		return four
+	}
+	five, err := generateIdFive(customId, currentTime, dataLength)
+	if err == nil {
+		return five
+	}
+	six, err := generateIdSix(customId, dataLength)
+	return six
+}
+
+// GenerateIdAndTimeLength 生成自定义长度编号
+func GenerateIdAndTimeLength(customId, customTime string, dataLength int) string {
+	one, err := generateIdOne(customId, customTime, dataLength)
+	if err == nil {
+		return one
+	}
+	two, err := generateIdTwo(customId, customTime, dataLength)
+	if err == nil {
+		return two
+	}
+	three, err := generateIdThree(customId, customTime, dataLength)
+	if err == nil {
+		return three
+	}
+	four, err := generateIdFour(customId, customTime, dataLength)
+	if err == nil {
+		return four
+	}
+	five, err := generateIdFive(customId, customTime, dataLength)
+	if err == nil {
+		return five
+	}
+	six, err := generateIdSix(customId, dataLength)
+	return six
+}
diff --git a/go.mod b/go.mod
index c9e80c7..6c940c3 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,21 @@ module go.dtapp.net/gostring
 go 1.18
 
 require (
-	go.dtapp.net/gorandom v1.0.1
-	go.dtapp.net/gotime v1.0.5
+	go.dtapp.net/gojson v1.0.2
+	go.dtapp.net/gorandom v1.0.2
+	go.dtapp.net/gotime v1.0.6
+)
+
+require (
+	github.com/bytedance/sonic v1.10.2 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d // indirect
+	github.com/chenzhuoyu/iasm v0.9.1 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	golang.org/x/arch v0.6.0 // indirect
+	golang.org/x/sys v0.15.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 6ce97d6..efdb861 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,59 @@
-go.dtapp.net/gorandom v1.0.1 h1:IWfMClh1ECPvyUjlqD7MwLq4mZdUusD1qAwAdsvEJBs=
-go.dtapp.net/gorandom v1.0.1/go.mod h1:ZPdgalKpvFV/ATQqR0k4ns/F/IpITAZpx6WkWirr5Y8=
-go.dtapp.net/gotime v1.0.5 h1:12aNgB2ULpP6QgQHEUkLilZ4ASvhpFxMFQkBwn0par8=
-go.dtapp.net/gotime v1.0.5/go.mod h1:Gq7eNLr2iMLP18UNWONRq4V3Uhf/ADp4bIrS+Tc6ktY=
+github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
+github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
+github.com/bytedance/sonic v1.10.2 h1:GQebETVBxYB7JGWJtLBi07OVzWwt+8dWA00gEVW2ZFE=
+github.com/bytedance/sonic v1.10.2/go.mod h1:iZcSUejdk5aukTND/Eu/ivjQuEL0Cu9/rf50Hi0u/g4=
+github.com/chenzhuoyu/base64x v0.0.0-20211019084208-fb5309c8db06/go.mod h1:DH46F32mSOjUmXrMHnKwZdA8wcEefY7UVqBKYGjpdQY=
+github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311/go.mod h1:b583jCggY9gE99b6G5LEC39OIiVsWj+R97kbl5odCEk=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d h1:77cEq6EriyTZ0g/qfRdp61a3Uu/AWrgIq2s0ClJV1g0=
+github.com/chenzhuoyu/base64x v0.0.0-20230717121745-296ad89f973d/go.mod h1:8EPpVsBuRksnlj1mLy4AWzRNQYxauNi62uWcE3to6eA=
+github.com/chenzhuoyu/iasm v0.9.0/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
+github.com/chenzhuoyu/iasm v0.9.1 h1:tUHQJXo3NhBqw6s33wkGn9SP3bvrWLdlVIJ3hQBL7P0=
+github.com/chenzhuoyu/iasm v0.9.1/go.mod h1:Xjy2NpN3h7aUqeqM+woSuuvxmIe6+DDsiNLIrkAmYog=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
+github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
+github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
+github.com/klauspost/cpuid/v2 v2.2.6 h1:ndNyv040zDGIDh8thGkXYjnFtiN02M1PVVF+JE/48xc=
+github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/knz/go-libedit v1.10.1/go.mod h1:MZTVkCWyz0oBc7JOWP3wNAzd002ZbM/5hgShxwh4x8M=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd h1:TRLaZ9cD/w8PVh93nsPXa1VrQ6jlwL5oN8l14QlcNfg=
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diff --git a/random.string.go b/random.string.go
new file mode 100644
index 0000000..3cd4033
--- /dev/null
+++ b/random.string.go
@@ -0,0 +1,74 @@
+package gostring
+
+import (
+	"math/rand"
+	"time"
+)
+
+// GenerateRandomString 生成count个长度length不重复的随机数
+func GenerateRandomString(length, count int) []string {
+	return GenerateRandomStringFunc(length, count, func(num string) bool {
+		return false
+	})
+}
+
+// GenerateRandomStringFunc 生成count个长度length不重复的随机数，支持外部查询
+func GenerateRandomStringFunc(length, count int, dFun func(num string) bool) []string {
+
+	var fI int = 0
+	startStr := "1"
+	endStr := "9"
+	alphabet := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+	rand.Seed(time.Now().UnixNano())
+
+	for {
+		if fI+2 > length {
+			break
+		}
+		startStr += "0"
+		endStr += "9"
+
+		fI = fI + 1
+	}
+
+	return GenerateRandomStringNumber(ToInt(startStr), ToInt(endStr), count, alphabet, length, dFun)
+}
+
+// GenerateRandomStringNumber 生成count个[start,end)结束的不重复的随机数
+func GenerateRandomStringNumber(start, end, count int, alphabet string, length int, dFun func(num string) bool) []string {
+
+	// 范围检查
+	if end < start || len(alphabet) == 0 || (end-start) < count {
+		return nil
+	}
+
+	// 存放结果的slice
+	results := make([]string, 0)
+
+	for len(results) < count {
+
+		// 生成随机字符串
+		str := make([]byte, length)
+		for i := range str {
+			str[i] = alphabet[rand.Intn(len(alphabet))]
+		}
+
+		// 查重
+		exist := false
+		for _, v := range results {
+			if v == string(str) {
+				exist = true
+				break
+			}
+		}
+
+		if !exist {
+			isExist := dFun(string(str))
+			if !isExist {
+				results = append(results, string(str))
+			}
+		}
+	}
+
+	return results
+}
diff --git a/string.go b/string.go
index 0929b2f..c2c2a3b 100644
--- a/string.go
+++ b/string.go
@@ -5,9 +5,11 @@ import (
 	"crypto/sha256"
 	"encoding/hex"
 	"fmt"
+	"go.dtapp.net/gojson"
 	"strconv"
 	"strings"
 	"unicode/utf8"
+	"unsafe"
 )
 
 // ToString 转换成string
@@ -150,3 +152,38 @@ func NumericalToString(value interface{}) (string, bool) {
 	}
 	return val, true
 }
+
+func StringToBytes(s string) []byte {
+	return unsafe.Slice(unsafe.StringData(s), len(s))
+}
+
+func BytesToString(b []byte) string {
+	return unsafe.String(&b[0], len(b))
+}
+
+// ToUpper 转大写
+func ToUpper(s string) string {
+	return strings.ToUpper(s)
+}
+
+// ToLower 转小写
+func ToLower(s string) string {
+	return strings.ToLower(s)
+}
+
+func GetString(i interface{}) string {
+	switch v := i.(type) {
+	case string:
+		return v
+	case []byte:
+		return string(v)
+	case int:
+		return strconv.Itoa(v)
+	case bool:
+		return strconv.FormatBool(v)
+	default:
+
+		bytes, _ := gojson.Marshal(v)
+		return string(bytes)
+	}
+}
diff --git a/url.go b/url.go
new file mode 100644
index 0000000..0f8f297
--- /dev/null
+++ b/url.go
@@ -0,0 +1,45 @@
+package gostring
+
+import (
+	"strings"
+)
+
+// CompleteUrlHttp 补全 URL
+func CompleteUrlHttp(url string) string {
+	if url == "" {
+		return url
+	}
+	if strings.HasPrefix(url, "http://") {
+		return url
+	}
+	if strings.HasPrefix(url, "//") {
+		url = "http:" + url
+	} else if strings.HasPrefix(url, "://") {
+		url = "http" + url
+	} else if strings.HasPrefix(url, "https://") {
+		url = Replace(url, "https://", "http://")
+	} else {
+		url = "http://" + url
+	}
+	return url
+}
+
+// CompleteUrlHttps 补全 URL
+func CompleteUrlHttps(url string) string {
+	if url == "" {
+		return url
+	}
+	if strings.HasPrefix(url, "https://") {
+		return url
+	}
+	if strings.HasPrefix(url, "//") {
+		url = "https:" + url
+	} else if strings.HasPrefix(url, "://") {
+		url = "https" + url
+	} else if strings.HasPrefix(url, "http://") {
+		url = Replace(url, "http://", "https://")
+	} else {
+		url = "https://" + url
+	}
+	return url
+}