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25 lines
388 B
25 lines
388 B
package tools
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import (
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"math/rand"
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"time"
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)
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func init() {
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// 随机数种子
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rand.Seed(time.Now().UnixNano())
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}
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// RandStr 生成随机数
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func RandStr(n int, str ...string) string {
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s := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
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if len(str) > 0 {
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s = str[0]
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}
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res := ""
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for i := 0; i < n; i++ {
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res += string(s[rand.Intn(len(s))])
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}
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return res
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}
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