## Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is java.sql.SQLException: interrupt
### The error may exist in com/zbkj/service/dao/StoreCouponUserDao.java (best guess)
### The error may involve com.zbkj.service.dao.StoreCouponUserDao.selectList
### The error occurred while executing a query