要被解析遍历的json（存放在BaccaratBettingBoard.json文件中）：

{
"1001":[271,3,536,171],"1002":[3,269,"1003":[173,173,357,297],"1006":[360,"1007":[3,171,297]
}

    std::string load_str;
    load_str = FileUtils::getInstance()->getStringFromFile("BaccaratBettingBoard.json");
 
    rapidjson::Document readdoc;
    readdoc.Parse<0>(load_str.c_str());
    if(readdoc.HasParseError())
    {
        log("GetParseError%s\n",readdoc.GetParseError());
    }
    CCASSERT(readdoc.IsObject(),"bettingBoard::initBettingBoard: 读取json失败，无法初始化下注区！");
    
    for(auto iter = readdoc.MemberonBegin(); iter != readdoc.MemberonEnd(); ++iter)
    {
        auto key = (iter->name).GetString();
        log("key:%s",key);
        log("value:");
        //auto& v = readdoc[key]
        for(auto i = 0; i < readdoc[key].Size(); ++i)
        {
            log("%0.2f",readdoc[key][i].GetDouble());
        }
    }