59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
/* Copyright 2015 sky<skygangsta@hotmail.com>. All rights reserved.
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*
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* Licensed under the Apache License, version 2.0 (the "License").
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* You may not use this work except in compliance with the License, which is
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* available at www.apache.org/licenses/LICENSE-2.0
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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* either express or implied, as more fully set forth in the License.
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*
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* See the NOTICE file distributed with this work for information regarding copyright ownership.
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*/
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package helper
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import (
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"fmt"
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"math/rand"
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"strconv"
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"time"
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)
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var Rand = NewRandHelper()
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type RandHelper struct{}
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func NewRandHelper() *RandHelper {
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return &RandHelper{}
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}
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func (this *RandHelper) Num(length int) int64 {
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var s string
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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p := r.Perm(length)
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for i := 0; i < length; i++ {
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s = fmt.Sprintf("%s%d", s, p[i])
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}
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num, _ := strconv.ParseInt(s, 10, 64)
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return num
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}
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//生成随机字符串
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func (this *RandHelper) Bytes(length int) []byte {
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buf := make([]byte, 0)
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str := []byte("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+=/")
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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for i := 0; i < length; i++ {
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buf = append(buf, str[r.Intn(len(str))])
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}
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return buf
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}
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//生成随机字符串
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func (this *RandHelper) String(length int) string {
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buf := this.Bytes(length)
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return string(buf)
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}
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