在s2sh中遇到的问题 初学者

Question

我就是敲了这些代码之后报的错误private String getCondition() {String whereHQL = "";if (messagestatisticsForm.getSendMobileID() != null) {whereHQL = " where sendMobileID="+ messagestatisticsForm.getSendMobileID();}    if (!StringUtils.isBlank(messagestatisticsForm.getCreateTimeStart())) {         if ("".equals(whereHQL)) {             whereHQL = " where createTimeStart>='"                     + messagestatisticsForm.getCreateTimeStart() + "'";         } else {             whereHQL = " and createTimeStart>='"                     + messagestatisticsForm.getCreateTimeStart() + "'";         }     }     if (!StringUtils.isBlank(messagestatisticsForm.getCreateTimeEnd())) {         if ("".equals(whereHQL)) {             whereHQL = " where createTimeEnd<='"                     + messagestatisticsForm.getCreateTimeEnd() + "'";         } else {             whereHQL = " and createTimeEnd<='"                     + messagestatisticsForm.getCreateTimeEnd() + "'";         }     }     // whereHQL += " order by id";     return whereHQL; }控制台中报的错误ERROR [org.hibernate.hql.PARSER] - line 1:56: unexpected token: and