What is the method for updating a list in MyBatis?

In MyBatis, to update multiple objects in a List, you can use the updateBatch method. This method is defined in the Mapper interface and can be implemented through XML mapping files or annotations.

The writing format of XML mapping file is as follows:

<update id="updateBatch" parameterType="java.util.List">
  update table_name
  set column1 = #{list[0].property1},
      column2 = #{list[0].property2},
      ...
  where id = #{list[0].id}
</update>

The format for annotations is as follows:

@UpdateProvider(type = MyProvider.class, method = "updateBatch")
void updateBatch(@Param("list") List<YourObject> list);

The above are two commonly used methods, you can choose the appropriate method to update the objects in the list based on your project requirements.