Mybatis map value 等于null无法获取值

在mybatis config.xml中

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//my batis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 开启缓存支持 -->
<setting name="cacheEnabled" value="false" />
<!-- 解决map value 等于null无法获取值-->
<setting name="callSettersOnNulls" value="true"/>
</settings>
<plugins>
<plugin interceptor="com.github.miemiedev.mybatis.paginator.OffsetLimitInterceptor">
<property name="dialectClass" value="com.github.miemiedev.mybatis.paginator.dialect.MySQLDialect"/>
</plugin>
</plugins>
</configuration>