ASP.NET生成Google网站地图的代码

/// <summary>
/// 生成google网站地图
/// </summary>
/// <returns></returns>
public static boolbuildgooglesitemap()
{
try
{
string rootdirectory = appdomain.currentdomain.basedirectory;
xmltextwriter writer = new xmltextwriter(httpcontext.current.server.mappath("~/googlesitemaps.xml"), encoding.getencoding("utf-8"));
writer.formatting = formatting.indented;
writer.writestartdocument();
writer.writestartelement("urlset", "http://www.google.com/schemas/sitemap/0.84");
//遍历扫描网站所有文件
showfiles(rootdirectory, writer);
writer.writeendelement();
writer.writeenddocument();
writer.close();
return true;
}
catch (exception err)
{
return false;
}
}
//遍历扫描网站所有文件
static void showfiles(string dirpath, xmltextwriter writer)
{
bool isread = true;
string[] notread ={ "app_data", "bin", "fckeditor", "js", "myadmin", "powerchatroom" };//排除这些文件夹
foreach (string s in notread)
{
string dirname = dirpath.substring(dirpath.lastindexof(@"\") + 1);
if (dirname == s)
{
isread = false;
break;
}
}
if (!isread)
return;
try
{
directoryinfo dir = new directoryinfo(dirpath);
foreach (fileinfo f in dir.getfiles())
{
string path = dir.fullname.replace(appdomain.currentdomain.basedirectory, "");//文件相对目录
//httpcontext.current.response.write(appdomain.currentdomain.basedirectory + "**********" + dir.fullname + "<br>");
writer.writestartelement("url");
writer.writestartelement("loc");
stringbuilder sb = new stringbuilder("/" + path + "/" + f.name);
sb.replace("//", "/").replace(@"\", "/");
writer.writestring(configurationmanager.appsettings["websiteurl"].tostring() + sb.tostring());
writer.writeendelement();
writer.writestartelement("lastmod");
writer.writestring(string.format("{0:yyyy-mm-dd}", f.lastwritetime));
writer.writeendelement();
writer.writestartelement("changefreq");
writer.writestring("always");//更新频率：always：经常，hourly：小时，daily：天，weekly：周，monthly：月，yearly：年
writer.writeendelement();
writer.writestartelement("priority");
writer.writestring("0.8");//相对于其他页面的优先权，此值定于0.0 - 1.0之间
writer.writeendelement();
writer.writeendelement();
}
foreach (directoryinfo d in dir.getdirectories())
{
showfiles(d.fullname, writer);
}
}
catch (exception) { }
}