获取搜索引擎关键字代码,CSharp代码库,德仔网

代码语言
代码分类
【CSharp】获取搜索引擎关键字
作者:dezai / 发布于2014/6/20/ 481

	C#获取搜索引擎关键字

	using System;
	using System.Collections;
	using System.Configuration;
	using System.Data;
	using System.Linq;
	using System.Web;
	using System.Web.Security;
	using System.Web.UI;
	using System.Web.UI.HtmlControls;
	using System.Web.UI.WebControls;
	using System.Web.UI.WebControls.WebParts;
	using System.Xml.Linq;

	using System.Text;
	using System.Text.RegularExpressions;

	public partial class Default2 : System.Web.UI.Page
	{

	private void Page_Load(object sender, System.EventArgs e)
	{
	if (!IsPostBack)
	Response.Write(SearchKey("="));
	}

	private string[][] _Enginers = new string[][] {
	new string[]{"google","utf8","q"},
	new string[]{"baidu","gb2312","wd"},
	new string[]{"yahoo","utf8","p"},
	new string[]{"yisou","utf8","search"},
	new string[]{"live","utf8","q"},
	new string[]{"tom","gb2312","word"},
	new string[]{"163","gb2312","q"},
	new string[]{"iask","gb2312","k"},
	new string[]{"soso","gb2312","w"},
	new string[]{"sogou","gb2312","query"},
	new string[]{"zhongsou","gb2312","w"},
	new string[]{"3721","gb2312","p"},
	new string[]{"openfind","utf8","q"},
	new string[]{"alltheweb","utf8","q"},
	new string[]{"lycos","utf8","query"},
	new string[]{"onseek","utf8","q"}
	};

	//搜索引擎名称
	private string _EngineName = "";
	public string EngineName
	{
	get { return _EngineName; }
	}
	private string _Coding = "utf8";
	public string Coding
	{
	get { return _Coding; }
	}
	private string _RegexWord = "";
	public string RegexWord
	{
	get { return _RegexWord; }
	}

	private string _Regex = @"(";

	//搜索引擎关键字
	public void EngineRegEx(string myString)
	{
	for (int i = 0, j = _Enginers.Length; i < j; i++)
	if (myString.Contains(_Enginers[i][0]))
	_EngineName = _Enginers[i][0];
	_Coding = _Enginers[i][1];
	_RegexWord = _Enginers[i][2];
	_Regex += _EngineName + @".+.*[?/&]" + _RegexWord + @"[=:])(?<key>[^&]*)";
	break;
	}

	//得到搜索引擎关键字
	public string SearchKey(string myString)
	{
	EngineRegEx(myString.ToLower());
	if (_EngineName != "")
	{
	Regex myReg = new Regex(_Regex, RegexOptions.IgnoreCase);
	Match matche = myReg.Match(myString);
	myString = matche.Groups["key"].Value;
	myString = myString.Replace("+", " ");
	if (_Coding == "gb2312")
	myString = GetUTF8String(myString);
	else
	myString = Uri.UnescapeDataString(myString);
	}
	return myString;
	}

	//整句转码
	public string GetUTF8String(string myString)
	{
	Regex myReg = new Regex("(?<key>%..%..)", RegexOptions.IgnoreCase);
	MatchCollection matches = myReg.Matches(myString);
	string myWord;
	for (int i = 0, j = matches.Count; i < j; i++)
	{
	myWord = matches[i].Groups["key"].Value.ToString();
	myString = myString.Replace(myWord, GB2312ToUTF8(myWord));
	return myString;
	}
	}

	//单字GB2312转UTF8 URL编码

	public string GB2312ToUTF8(string myString)
	{
	string[] myWord = myString.Split("%");
	byte[] myByte = new byte[]
	{
	Convert.ToByte(myWord[1], 16), Convert.ToByte(myWord[2], 16)
	};
	Encoding GB = Encoding.GetEncoding("GB2312");
	Encoding U8 = Encoding.UTF8;
	myByte = Encoding.Convert(GB, U8, myByte);
	char[] Chars = new char[U8.GetCharCount(myByte, 0, myByte.Length)];
	U8.GetChars(myByte, 0, myByte.Length, Chars, 0);
	return new string(Chars);
	}

	//判断否为搜索引擎爬虫,并返回其类型
	public string isCrawler(string SystemInfo)
	{
	string[] BotList = new string[] { "Google", "Baidu", "MSN", "Yahoo", "TMCrawler", "iask", "Sogou" };
	foreach (string Bot in BotList)
	if (SystemInfo.ToLower().Contains(Bot.ToLower()))
	return Bot;

	return "null";
	}
	}
试试其它关键字
　搜索引擎　　关键字　
同语言下
可能有用的
dezai贡献的其它代码(1065)