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【Asp.Net】判断是否搜索引擎访问网站

作者:Dezai.CN / 发布于2012/5/21/ 600

判断是否搜索引擎访问网站

<div><font color="#008000"><span class="note">/// <summary></span>
</font> <font color="#008000"><span class="note">/// 判断是否为搜索引擎访问</span>
</font> <font color="#008000"><span class="note">/// </summary></span>
</font> <font color="#008000"><span class="note">/// <param name="useragent"></param></span>
</font> <font color="#008000"><span class="note">/// <returns></returns></span>
</font> <span class="kw"><font color="#0000ff">public</font></span> <span class="kw"><font color="#0000ff">bool</font></span> IsSearchEngine(<span class="kw"><font color="#0000ff">string</font></span> useragent)
 {
 <span class="kw"><font color="#0000ff">bool</font></span> engine = <span class="kw"><font color="#0000ff">false</font></span>;
 <span class="kw"><font color="#0000ff">if</font></span> (!<span class="kw"><font color="#0000ff">string</font></span>.IsNullOrEmpty(useragent))
 {
 System.Text.RegularExpressions.<span class="phpVar"><font color="#0066cc">Regex </font></span>rx = <span class="kw"><font color="#0000ff">new</font></span> System.Text.RegularExpressions.Regex(@<span class="str"><font color="#a31515">"Googlebot|Feedfetcher-Google|Baiduspider|Yahoo\s*\!\s*Slurp|YodaoBot|Sosoimagespider|Sosospider|Sogou\s*Web\s*Sprider"</font></span>, RegexOptions.IgnoreCase | RegexOptions.Compiled);
 engine = rx.IsMatch(useragent);
 }
 <span class="kw"><font color="#0000ff">return</font></span> engine;
 }

<font color="#008000"><span class="note">//使用方法</span>
</font><span class="kw"><font color="#0000ff">bool</font></span> engine = IsSearchEngine(Request.ServerVariables[<span class="str"><font color="#a31515">"Http_User_Agent"</font></span>]);
Response.Write(engine);</div>

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