/*将originStr字符串中的searchStr替换成replaceStr*/

std::string str_replace(std::string originStr,std::string searchStr,std::string replaceStr){

    std::string::size_type pos = ;

    while((pos = originStr.find(searchStr, pos)) != std::string::npos) {

        originStr.replace(pos, searchStr.size(), replaceStr);

        pos++;

    }

    return originStr;

}