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
// <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())
.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