<%@ WebHandler Language="C#" Class="GwStrategyTestHandler" %>
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using System;
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using System.Web;
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using System.Collections.Generic;
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using System.Text.RegularExpressions;
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public class GwStrategyTestHandler : IHttpHandler
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{
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public void ProcessRequest(HttpContext context)
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{
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string srcContent = ToString(context.Request["srcContent"]);
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string wordList = ToString(context.Request["wordList"]);
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IEnumerable<PatternStruct> patternList = ToWordExpressions(wordList);
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PatternStruct pattern = null;
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string resultMessage = "没有找到匹配内容";
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System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
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sw.Start();
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if (MatchContent(srcContent, patternList, ref pattern))
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{
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resultMessage = "匹配关键词：" + pattern.Src;
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}
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sw.Stop();
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resultMessage += "；耗时" + sw.ElapsedTicks / 100 / 1000 + "ms";
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context.Response.ContentType = "application/json";
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context.Response.Write(Newtonsoft.Json.JsonConvert.SerializeObject(new { OK = true, Message = resultMessage }));
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}
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public string ToString(string s)
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{
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if (s == null)
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return string.Empty;
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return s;
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}
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private static bool MatchContent(string srcContent, IEnumerable<PatternStruct> patternList, ref PatternStruct pattern)
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{
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foreach (var p in patternList)
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{
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if (Regex.IsMatch(srcContent, p.Pattern))
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{
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pattern = p;
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return true;
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}
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}
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return false;
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}
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class PatternStruct
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{
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public string Pattern { get;private set; }
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public string Src { get;private set; }
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public PatternStruct(string pattern, string src)
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{
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this.Pattern = pattern;
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this.Src = src;
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}
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}
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private IEnumerable<PatternStruct> ToWordExpressions(string source)
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{
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List<PatternStruct> list = new List<PatternStruct>();
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string[] lineArray = source.Split(";,；，\r\n".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
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foreach (string line in lineArray)
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{
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string temp = line;
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temp = temp.Replace(@"\", @"\\");
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temp = temp.Replace(@"|", @"\|");
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temp = temp.Replace(@"^", @"\^");
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temp = temp.Replace(@"$", @"\$");
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temp = temp.Replace(@"{", @"\{");
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temp = temp.Replace(@"}", @"\}");
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temp = temp.Replace(@"(", @"\(");
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temp = temp.Replace(@")", @"\)");
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temp = temp.Replace(@"[", @"\[");
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temp = temp.Replace(@"]", @"\]");
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temp = temp.Replace(@":", @"\:");
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temp = temp.Replace(@".", @"\.");
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temp = temp.Replace(@"?", @"\?");
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temp = temp.Replace(@"-", @"\-");
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temp = temp.Replace(@",", @"\,");
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string pattern = Regex.Replace(temp, @"(\*+)", delegate(Match m) { return @"[\w\W]{0," + (m.Groups[1].Value.Length * 10) + "}?"; });
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list.Add(new PatternStruct(pattern,line));
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}
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return list;
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}
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public bool IsReusable
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{
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get
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{
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return false;
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}
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}
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}
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