C# IP位址與數位(長整數)之間的轉換(參考JAVA 改過來的)

C# IP位址與數位(長整數)之間的轉換(參考JAVA 改過來的)

C# IP位址與數位(長整數)之間的轉換(參考JAVA 改過來的)

 

資料來源: http://www.iteye.com/topic/254742

https://github.com/jash-git/CS-IP-Int64-Conversion-

 

using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Text;
   
  namespace CS_IP_Long
  {
  /*
  JAVA code-http://www.iteye.com/topic/254742
  public static long ip2long(String ip) {
  String[] ips = ip.split(“[.]”);
  long num = 16777216L*Long.parseLong(ips[0]) + 65536L*Long.parseLong(ips[1]) + 256*Long.parseLong(ips[2]) + Long.parseLong(ips[3]);
  return num;
  }
   
  public static String long2ip(long ipLong) {
  //long ipLong = 1037591503;
  long mask[] = {0x000000FF,0x0000FF00,0x00FF0000,0xFF000000};
  long num = 0;
  StringBuffer ipInfo = new StringBuffer();
  for(int i=0;i<4;i++){
  num = (ipLong & mask[i])>>(i*8);
  if(i>0) ipInfo.insert(0,”.”);
  ipInfo.insert(0,Long.toString(num,10));
  }
  return ipInfo.toString();
  }
  */
  class Program
  {
  public static Int64 ip2long(String ip)
  {
  String[] ips = ip.Split(.);
  Int64 num = 16777216L * Convert.ToInt64(ips[0], 10) + 65536L * Convert.ToInt64(ips[1], 10) + 256 * Convert.ToInt64(ips[2], 10) + Convert.ToInt64(ips[3], 10);
  return num;
  }
  public static String long2ip(Int64 ipLong)
  {
  //long ipLong = 1037591503;
  Int64[] mask = new Int64[] { 0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000 };
  Int64 num = 0;
  string Buf = ;
  for(int i=0;i<4;i++){
  num = (ipLong & mask[i])>>(i*8);
  Buf = .+num + Buf;
  }
   
  return Buf.Substring(1);
  }
  public static void pause()
  {
  Console.Write(Press any key to continue . . . );
  Console.ReadKey(true);
  }
  static void Main(string[] args)
  {
  Int64 val01 = ip2long(1.2.3.4);
  String Str01 = long2ip(val01);
  Int64 val02 = ip2long(1.2.3.10);
  String Str02 = long2ip(val02);
  Int64 val03 = ip2long(192.168.0.5);
  String Str03 = long2ip(val03);
  //–
  String Str04 = long2ip(3439438016);//驗證API數字
  Int64 val04 = ip2long(Str04);
  pause();
  }
  }
  }

發表迴響

你的電子郵件位址並不會被公開。 必要欄位標記為 *