最新手机号段归属地数据库高性能dat解析

article/2025/9/24 11:35:30

最新手机号段数据库 2020-08-15 458461条记录号码归属地数据库全面准确规范
字段包括省份城市运营商邮编区号等信息，对于数据分析、号码归属地查询等非常有帮助

名称：手机号码归属地查询 dat高效率查询内存优化版
压缩：原版txt为22M,生成这种dat结构为2.66M
性能：每秒解析300万+号段或者号码,简洁高效
环境：CPU i7-7700K +内存16GB

using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading;namespace qqzeng_phone_dat
{public class PhoneSearchFast{private static readonly Lazy<PhoneSearchFast> lazy = new Lazy<PhoneSearchFast>(() => new PhoneSearchFast());public static PhoneSearchFast Instance { get { return lazy.Value; } }private PhoneSearchFast(){LoadDat();Watch();}private string datPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"qqzeng-phone.dat");private DateTime lastRead = DateTime.MinValue;private long[,] prefmap = new long[200, 2];//  000-199private long[,] phonemap;private byte[] data;private long[] phoneArr;private string[] addrArr;private string[] ispArr;/// <summary>/// 初始化二进制dat数据/// </summary>/// <param name="dataPath"></param>/// private void LoadDat(){data = File.ReadAllBytes(datPath);long PrefSize = BytesToLong(data[0], data[1], data[2], data[3]);long RecordSize = BytesToLong(data[4], data[5], data[6], data[7]);long descLength = BytesToLong(data[8], data[9], data[10], data[11]);long ispLength = BytesToLong(data[12], data[13], data[14], data[15]);//内容数组int descOffset = (int)(16 + PrefSize * 9 + RecordSize * 7);string descString = Encoding.UTF8.GetString(data, descOffset, (int)descLength);addrArr = descString.Split('&');//运营商数组int ispOffset = (int)(16 + PrefSize * 9 + RecordSize * 7 + descLength);string ispString = Encoding.UTF8.GetString(data, ispOffset, (int)ispLength);ispArr = ispString.Split('&');//前缀区int m = 0;for (var k = 0; k < PrefSize; k++){int i = k * 9 + 16;int n = data[i];prefmap[n, 0] = BytesToLong(data[i + 1], data[i + 2], data[i + 3], data[i + 4]);prefmap[n, 1] = BytesToLong(data[i + 5], data[i + 6], data[i + 7], data[i + 8]);if (m < n){for (; m < n; m++){prefmap[m, 0] = 0; prefmap[m, 1] = 0;}m++;}else{m++;}}//索引区phoneArr = new long[RecordSize];phonemap = new long[RecordSize, 2];for (int i = 0; i < RecordSize; i++){long p = 16 + PrefSize * 9 + (i * 7);phoneArr[i] = BytesToLong(data[p], data[1 + p], data[2 + p], data[3 + p]);phonemap[i, 0] = data[4 + p] + ((data[5 + p]) << 8);phonemap[i, 1] = data[6 + p];}}private void Watch(){FileInfo fi = new FileInfo(datPath);FileSystemWatcher watcher = new FileSystemWatcher(fi.DirectoryName){IncludeSubdirectories = false,NotifyFilter = NotifyFilters.LastWrite,Filter = "qqzeng-phone.dat",};watcher.Changed += (s, e) =>{var lastWriteTime = File.GetLastWriteTime(datPath);if (lastWriteTime > lastRead){//延时 解决 正由另一进程使用,因此该进程无法访问此文件Thread.Sleep(1000);LoadDat();lastRead = lastWriteTime;}};watcher.EnableRaisingEvents = true;}/// <summary>/// 号段查询/// </summary>/// <param name="phone">7位或者11位</param>/// <returns></returns>public string Query(string phone){long pref;long val = PhoneToInt(phone, out pref);long low = prefmap[pref, 0], high = prefmap[pref, 1];if (high == 0){return "";}long cur = low == high ? low : BinarySearch(low, high, val);if (cur != -1){return addrArr[phonemap[cur, 0]] + "|" + ispArr[phonemap[cur, 1]];}else{return "";}}/// <summary>/// 二分算法/// </summary>private int BinarySearch(long low, long high, long key){if (low > high)return -1;else{long mid = (low + high) / 2;long phoneNum = phoneArr[mid];if (phoneNum == key)return (int)mid;else if (phoneNum > key)return BinarySearch(low, mid - 1, key);elsereturn BinarySearch(mid + 1, high, key);}}private long PhoneToInt(string phone, out long prefix){//最高性能char ch;long currentValue = 0;long prefval = 0;unsafe{fixed (char* name = phone){for (int current = 0; current < 7; current++){ch = name[current];int digitValue = ch - '0';currentValue = (currentValue * 10) + digitValue;if (current == 2){prefval = currentValue;}}}prefix = prefval;return currentValue;}//prefix = Convert.ToUInt32(phone.Substring(0,3));//return Convert.ToUInt32(phone.Substring(0, 7)); ;}/// <summary>/// 字节转整形 小节序 /// </summary>     private uint BytesToLong(byte a, byte b, byte c, byte d){return (uint)(a | (b << 8) | (c << 16) | (d << 24));}}/*（调用例子）：    string result = PhoneSearchFast.Instance.Query("号段|号码");--> result="省份|城市|区号|邮编|行政区划代码|运营商"*/
}

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