✨ 完成基础脚手架

utils/random.go

@@ -0,0 +1,73 @@
+package utils
+
+import (
+	"bytes"
+	"crypto/rand"
+	"fmt"
+	"math/big"
+	mr "math/rand"
+	"time"
+)
+
+type random struct{}
+
+func Random() *random {
+	return &random{}
+}
+
+// GetRandomInt 获取指定长度的随机数字
+func (r random) GetRandomInt(len int) string {
+	var numbers = []byte{0, 1, 2, 3, 4, 5, 7, 8, 9}
+	var container string
+	length := bytes.NewReader(numbers).Len()
+
+	for i := 1; i <= len; i++ {
+		rd, err := rand.Int(rand.Reader, big.NewInt(int64(length)))
+		if err != nil {
+
+		}
+		container += fmt.Sprintf("%d", numbers[rd.Int64()])
+	}
+	return container
+}
+
+// GetRandomNumber 获取指定范围内的一个随机数
+func (r random) GetRandomNumber(min, max int) int {
+	mr.Seed(time.Now().UnixNano())
+	rn := mr.Intn(max-min) + min
+	return rn
+}
+
+// GetLiveHouseId 获取腾讯TRTC直播间Id
+func (r random) GetLiveHouseId() string {
+	id := r.GetRandomNumber(1, 4294967295)
+	return fmt.Sprintf("%d", id)
+}
+
+// GetRandomString 生成随机字符串
+func (r random) GetRandomString(len int) string {
+	var container string
+	var str = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
+	b := bytes.NewBufferString(str)
+	length := b.Len()
+	bigInt := big.NewInt(int64(length))
+	for i := 0; i < len; i++ {
+		randomInt, _ := rand.Int(rand.Reader, bigInt)
+		container += string(str[randomInt.Int64()])
+	}
+	return container
+}
+
+// GetRandomStringSafe 获取去掉了iI0O1的随机字符串
+func (r random) GetRandomStringSafe(len int) string {
+	var container string
+	var str = "abcdefghjkmnpqrstuvwxyzABCDEFGHJKMNPQRSTUVWXYZ23456789"
+	b := bytes.NewBufferString(str)
+	length := b.Len()
+	bigInt := big.NewInt(int64(length))
+	for i := 0; i < len; i++ {
+		randomInt, _ := rand.Int(rand.Reader, bigInt)
+		container += string(str[randomInt.Int64()])
+	}
+	return container
+}