What is the purpose of TypeHandler in MyBatis?

In MyBatis, the purpose of a TypeHandler is to convert Java types to database types, facilitating the mapping between Java objects and database fields. TypeHandlers can be used to handle various data type conversions, such as converting a string type in the database to a Date type in Java or converting a numeric type in the database to an enum type in Java. By customizing TypeHandlers, one can flexibly manage conversions between different data types to better meet business requirements.