java - Spring boot mybatis custom converter problem

Question

When spring boot is integrated with mybatis, the custom typehandler (converter) is not called
First, the table structure

Entity

Enumeration type

Custom handler

mybatis.type-handlers-package has been configured

Here comes a great assist

Answer 1

Mybatis will use EnumTypeHandler to handle Enum type by default, see the following code:

if (handler == null && type != null && type instanceof Class &&         
       Enum.class.isAssignableFrom((Class<?>) type)) {
    handler = new EnumTypeHandler((Class<?>) type);
}

If you want to use your own typeHandler, you need to register your own typeHandler first, and then set the typeHandler when setting parameters and getting results.