Saxon

mybatis返回数据类型为map，值为null的key没返回

创建mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"

"https://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>

    <settings> 

        <!-- 当返回数据类型为map，设置callSettersOnNulls会把值为null的key也返回 -->

        <setting name="callSettersOnNulls" value="true"/> 

    </settings>

</configuration>

 重新启动即可