code: public boolean existIndice(String indiceName) throws ElasticSearchException{
  		try {
  			executeHttp(indiceName, ClientInterface.HTTP_HEAD);
  			return true;
  		}
  		catch(ElasticSearchException e){
  			return ResultUtil.hand404HttpRuntimeException(e,boolean.class,ResultUtil.OPERTYPE_existIndice);
  		}
  
  	}
docs: 判断索引是否存在
  @param indiceName
  @return
  @throws ElasticSearchException