平常我们的ip地址存入计算机并不是点分形式,而是uint32类型的。下面使用C#实现IP地址与数字之间的转换。
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
namespace Test3
{
class Program
{
static void Main(string[] args)
{
//1.写出一个函数将IP地址字符串转成一个数字表示
Console.WriteLine(IpToInt1("192.168.0.1"));
Console.WriteLine(IpToInt2("192.168.0.1"));
Console.WriteLine(IntToIp(3232235521));
}
//IP转数字
static UInt32 IpToInt1(string ip)
{
IPAddress ipaddress = IPAddress.Parse(ip);
byte[] addbuffer = ipaddress.GetAddressBytes();
Array.Reverse(addbuffer);
return System.BitConverter.ToUInt32(addbuffer, 0);
}
//IP转数字
static long IpToInt2(string ip)
{
long intIp = 0;
string[] ips = ip.Split('.');
intIp = long.Parse(ips[0]) << 24 | long.Parse(ips[1]) << 16 | long.Parse(ips[2]) << 8 | long.Parse(ips[3]);
return intIp;
}
//数字转化为IP
static string IntToIp(long ipInt)
{
StringBuilder sb = new StringBuilder();
sb.Append((ipInt >> 24) & 0xFF).Append(".");
sb.Append((ipInt >> 16) & 0xFF).Append(".");
sb.Append((ipInt >> 8) & 0xFF).Append(".");
sb.Append(ipInt & 0xFF);
return sb.ToString();
}
}
}
转载自:https://www.cnblogs.com/testsec/p/6095832.html |