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//检测邮箱地址是否合法
bool HuFuns::HuBase::CheckEmail(string strEmail)
{
    std::tr1::regex reg("([0-9A-Za-z\\-_\\.]+)@([0-9a-z]+\\.[a-z]{2,3}(\\.[a-z]{2})?)");
    std::tr1::smatch results;
    std::string search_string(strEmail.c_str());
    bool bRet = std::tr1::regex_match(search_string, results, reg);
    strEmail.clear();
    return bRet;
}