关于mybatis resulttype 返回值异常的问题

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<id column="s_name" jdbcType="VARCHAR" property="name"/>

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<?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> 
        <!-- 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>

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<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="configLocation" value="classpath:/META-INF/spring/mybatis-config.xml" />
    <property name="mapperLocations">
    <array>
    　　<value>classpath*:/com/xxx/mapper/*.xml</value>
    </array>
　　</property>
</bean>

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import org.mybatis.spring.boot.autoconfigure.ConfigurationCustomizer;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.Configuration;  
  
/** 
 * mybatis 注解版  
 * 
 */  
@Configuration  
public class MybatisConfig {  
  
    @Bean  
    public ConfigurationCustomizer configurationCustomizer() {  
        return new ConfigurationCustomizer() {  
  
            @Override  
            public void customize(org.apache.ibatis.session.Configuration configuration) {  
                configuration.setMapUnderscoreToCamelCase(true);//设置驼峰命名规则 
                configuration.setCallSettersOnNulls(true);
            }  
        };  
    }  
}