public QnAController()
        {
            ElasticSearchEnvInfo envInfo = new ElasticSearchEnvInfo()
            {
                SearchUrl    = "http://hynamick-qa.chinacloudapp.cn/api/search",
                SearchSource = "hwfaq"
            };

            this.qnaProvider     = new QnAProviderElasticSearchImpl(envInfo);
            this.answerFormatter = new SimpleAnswerFormatter();
        }
 public QnAProviderElasticSearchImpl(ElasticSearchEnvInfo envInfo)
 {
     this.envInfo = envInfo;
 }