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44 lines
1011 B
44 lines
1011 B
20 hours ago
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package publicmethod
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import (
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"fmt"
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"math/rand"
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"time"
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)
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/*
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*
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@ 作者: 秦东
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@ 时间: 2025-12-06 11:05:40
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@ 功能: 随机字符串
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*/
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func GenerateRandomString(length int) (string, error) {
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if length <= 0 {
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return "", fmt.Errorf("长度必须大于0")
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}
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// 定义所有可能的字符：数字0-9，大写字母A-Z，小写字母a-z
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allChars := "123456789ABCDEFGHIJKLMNPQRSTUVWXYZabcdefghijklmnpqrstuvwxyz"
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allCharsLen := len(allChars)
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// 检查请求的长度是否超过可用字符数
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if length > allCharsLen {
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return "", fmt.Errorf("请求的长度(%d)超过了可用字符总数(%d)", length, allCharsLen)
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}
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// 将字符串转换为字节切片以便随机选择
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chars := []byte(allChars)
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// 使用当前时间作为随机种子
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rand.Seed(time.Now().UnixNano())
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// 随机打乱字符顺序
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rand.Shuffle(allCharsLen, func(i, j int) {
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chars[i], chars[j] = chars[j], chars[i]
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})
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// 取前length个字符作为结果
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result := string(chars[:length])
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return result, nil
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}
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