{"success":false,"errMsg":"nested?exception?is?org.apache.ibatis.exceptions.PersistenceException:?
\r\n###?Error?querying?database.??Cause:?org.springframework.jdbc.CannotGetJdbcConnectionException:?
Could?not?get?JDBC?Connection;?nested?exception?is?java.sql.SQLException:?
Connections?could?not?be?acquired?from?the?underlying?database!\r\n###?The?error?may?exist?in?file?
[E:\\demo\\target\\classes\\mapper\\AreaDao.xml]\r\n###
?The?error?may?involve?com.imooc.demo.dao.AreaDao.queryArea\r\n###?The?error?occurred?while?executing?a?query\r\n###?
?Cause:?org.springframework.jdbc.CannotGetJdbcConnectionException:?Could?not?get?JDBC?Connection;?
?nested?exception?is?java.sql.SQLException:?Connections?could?not?be?acquired?from?the?underlying?database!"}