{"ok":false,"message":"nested exception is org.apache.ibatis.exceptions.PersistenceException: \n### Error querying database.  Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Public Key Retrieval is not allowed\n### The error may exist in cn/nwinfo/exhibition/mapper/CompanyMapper.xml\n### The error may involve cn.nwinfo.exhibition.mapper.CompanyMapper.findById\n### The error occurred while executing a query\n### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Public Key Retrieval is not allowed"}