s=boost::regex_replace(s,expression,"");

    boost::regex expression1("(<style.*?>)(.*?)(</style>)",Para); //去除样式

    s=boost::regex_replace(s,expression1,"");

    boost::regex expression2("(<!--.*?-->)",Para); //去除注释

    s=boost::regex_replace(s,expression2,"");

    htmlcode=s.c_str(); //stirng类型转换为CString类型

    return htmlcode;

}

CString CHtmlcodeIE::ExtractAllText(CString htmlcode)

{

    std::string s=(string)htmlcode;

    boost::regex expression("(.*?)(<.*?>)(.*?)",Para);

    s=boost::regex_replace(s,expression,"$1$3");  //$2为保留标记

    htmlcode=s.c_str();

    return htmlcode;

}

CString CHtmlcodeIE::ExtractTextA(CString htmlcode)

{

    CString str,ret,retstr,groupstr; 

    boost::regex express("((?:option .*?value=[\"|\'](.*?)[\"|\'].*?)|(?:a .*?href=[\"|\'](.*?)[\"|\'].*?))>([^>]+)<",Para);

    boost::cmatch result;   //匹配结果变量

    str=htmlcode;

    while(boost::regex_search(str, result, express))

    {  

        groupstr="";

        for(int i=result.size()-1; i>=2; i--)

        {           

            ret = result[i].str().c_str();

            if(i==result.size()-1)

            {

                    ret=DeleteTag(ret); //如果是文本，过滤其中的无用代码

                if(ret=="")

                {  break;}

            }

            if(ret!="")

            {  groupstr=groupstr+ret+" "; }

        }

        if(groupstr!="")

        {  retstr=retstr+groupstr+"\r\n"; }

        str = result[result.size()].second;