go 生成随机字符串

RandStr

//生成随机字符串
func RandStr(strlen int) string {
    rand.Seed(time.Now().Unix())
    data := make([]byte, strlen)
    var num int 
    for i := 0; i < strlen; i++ {
        num = rand.Intn(57) + 65
        for {
            if num>90 && num<97 {
                num = rand.Intn(57) + 65
            } else {
                break
            }   
        }   
        data[i] = byte(num)
    }   
    return string(data)
}

rand.Seed(time.Now().Unix()) --> rand.Seed(time.Now().UnixNano()), 否则调用频繁的时候回返回同一个值

another version: https://gist.github.com/DavadDi/8944292b59d7e74812cb91788218a246