Mybatis integrates Oracle query and reports an error in the datetime type field

Question:

The same SQL statement can be executed normally in Oracle, but an error will be reported in the mybatis framework: ora-01722: invalid number or string does not match the data type

solve

Convert variable to string type:

g.UPDATETIME >= TO_CHAR(TRUNC (SYSDATE))，
g.CHECKDATE >= TO_CHAR('2021-01-01 00:00:00'))