package com.demo.test1; import java.security.NoSuchAlgorithmException; import java.security.SecureRandom; import java.util.regex.Matcher; import java.util.regex.Pattern; public class HighArray { private final static int OFFSET = 538309; public static

将8位字符串转换成日期型,方法如下: ),)

此工具类用于生成24位字符串ID,唯一不重复.直接通过 IdGenerator.get() 获取. 源码如下:(点击下载源码 - IdGenerator.java ) import java.net.NetworkInterface; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.util.Enumeration; /** * 生成24位字符串ID * */ public class IdGenerator

整理几个经常使用GUID转换成16位字符串或19位唯一字符串方法: /// <summary> /// 依据GUID获取16位的唯一字符串 /// Author : 付义方 /// </summary> /// <param name=\"guid\"></param> /// <returns></returns> public static string GuidTo16String() { long i =

将int型数字转换成6位字符串,不足的时候,前面补0 方法一: int num = 123; num.ToString("000000"); 方法二: int num = 123; num.ToString().PadLeft(6, '0'); 方法三: int num = 123; num.ToString("d6"); 方法四: int num = 123; string.Format("{0:d6}", num); 方法五: int num

[root@localhost wyb]# cat user10.sh #!/bin/bash #批量创建10个系统帐号wangyb01-wangyb10并设置密码(密码为随机8位字符串). >user.list ` do useradd wangyb$user password=`-` echo $password|passwd wangyb$user --stdin echo wangyb$user $password >> user.list done [root@localhos

import java.text.ParseException; import java.text.SimpleDateFormat; /** * 校验8位字符串是否为正确的日期格式 * @author [J.H] * 参考:https://blog.csdn.net/cc_yy_zh/article/details/73181010 */ public class Demo1 { //校验8位字符串是否为正确的日期格式 private static boolean isValidDate(St

import org.springframework.util.Base64Utils; import javax.imageio.ImageIO; import java.awt.*; import java.awt.image.BufferedImage; import java.io.*; import java.util.HashMap; import java.util.Map; import java.util.Random; public class CaptchaPic { pu

/// <summary> /// 根据GUID获取16位的唯一字符串 /// </summary> /// <param name=\"guid\"></param> /// <returns></returns> public static string GuidTo16String() { ; foreach (byte b in Guid.NewGuid().ToByteArray()) i *= (();

// <summary> /// 根据GUID获取16位的唯一字符串 /// </summary> /// <param name=\"guid\"></param> /// <returns></returns> public static string GuidTo16String() { long i = 1; foreach (byte b in Guid.NewGuid().ToByteArray())

工作中遇到通过图片的url获取图片base64位的需求.一开始是用网上的方法,通过工具类Toolkit,虽然实现的代码比较简短,不过偶尔会遇到图片转成base64位不正确的情况,至今不知道为啥. 之后,又去网上搜了通过获取图片的二进制流转换成base64的方式,两种方式,都是亲测有效,通过Toolkit偶尔会出现,转base64后,展示不完整的问题.所以建议用通过下载二进制流转换的方式进行转换. 下面附上代码: import java.awt.image.BufferedImage; impor

HTML: <div class="ai-item upload-id-img"> <p>上传身份证照片</p> <div class="img-box"> <div class="positive-img"> <input type="file" id="img1" name="zm" class="input

def code_get(self): source = ['] #数字验证码 # source = [ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H','I','J', 'K','L', 'M', 'N','O','P','Q','R', # 'S', 'T', 'U', 'V', 'W', 'Z','X', 'Y'] #字母验证码 return ''.join(random.sample(source, number)) # number是生成验证码的位数

.netcore文件上传Api接口,和正常的webForm提交类似,只是用postman测试接口时,记得给form表单命名,否则获取上传文件数量一直为0 后端代码 using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Http; using Microsoft.AspNe

Golang: func RandomString(n int) string { var letters = []byte("ABCDEFGHIGKLMNOPQRSTUVWXYZabcdefghigklmnopqrstuvwxyz0123456789") result := make([]byte, n) //设置随机数种⼦,加上这⾏代码,可以保证每次随机都是随机 rand.Seed(time.Now().Unix()) for i := range result { //如果不加上

if(! function_exists ('get_rand_string') ) { function get_rand_string($len=6,$format='ALL') { switch($format) { case 'ALL': $chars='ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-@#~'; break; case 'CHAR': $chars='ABCDEFGHIJKLMNOPQRSTU

byte[] getImageByte = HttpHelper.getImageByte(HttpContext.Current.Server.MapPath(("~/UploadFiles/StuImgs/" + result_Model.StuImage))); if (getImageByte != null) { student.StuImage = result_Model.StuImage; student.pic_data = Convert.ToBase64Strin

const pattern = /(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/; const newDate = new Date(timeEnd.replace(pattern, '$1-$2-$3 $4:$5:$6'));

package org.changneng.util; import java.util.Random; public class A { public static void main(String args[]){ for(int i=0;i<100;i++){ System.out.println(GetRandomString(10)); } } public static String GetRandomString(int Len) { String[] baseString={&quo

private string VerifyCode() { Random random = new Random(); , ).ToString(); }

#!/usr/bin/env pyhton # coding:utf-8 # @Time : 2020-02-16 10:07 # @Author : LeoShi # @Site : # @File : demo.py # @Software : MacOS Python 3.7 import string import random # 随机生成1个浮点数 # 0.34131937605072793 print(random.random()) # 随机生成浮点数范围 # 2.6912496