pub/ToproPublic/topro-base/target/classes/config/mybatis-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
	<settings>
		<!--解决插入null的时候报错问题-->
		<setting name="jdbcTypeForNull" value="NULL"/>

        <!--解决mysql返回结果Map集合子段为null不显示问题-->
        <setting name="callSettersOnNulls" value="true"/>
	</settings>

</configuration>