代码结构:

spring.xml:

<import resource="classpath:spring/spring-jdbc.xml"/>
<context:component-scan base-package="com.my.test.spring"/>
spring-jdbc.xml:

<context:property-placeholder location="classpath:conf/jdbc.properties" file-encoding="UTF-8"/>

<bean id="dataSourceCW" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
    <property name="url" value="${jdbc.url}"/>
    <property name="username" value="${jdbc.username}"/>
    <property name="password" value="${jdbc.password}"/>

    <property name="initialSize" value="${jdbc.initialSize}"/>
    <property name="minIdle" value="${jdbc.minIdle}"/>
    <property name="maxActive" value="${jdbc.maxActive}"/>
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSourceCW"/>
    <property name="configLocation" value="classpath:mybatis/configuration.xml"/>
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    <property name="basePackage" value="com.my.test.spring.ioc.mapper"/>
</bean>
configuration.xml只配置了驼峰映射

<configuration>
    <settings>
        <!-- 驼峰自动映射-->
<setting name="mapUnderscoreToCamelCase" value="true" />
    </settings>
</configuration>
测试类

public class TestMapperBean {


    @Test
public void testMapper111(){
        ApplicationContext context = new ClassPathXmlApplicationContext("spring/spring.xml");

        TestMapper mapper = context.getBean("testMapper", TestMapper.class);
        List<TestBean> beanList = mapper.getTestBeanList();//报错代码
        System.out.println("test id and number is : " + JSON.toJSONString(beanList));
    }
}

相关类和xml

public interface TestMapper {

   List<TestBean> getTestBeanList();
}

<mapper namespace="com.my.test.spring.ioc.mapper.TestMapper">

    <select id="getTestBeanList" resultType="com.my.test.spring.ioc.bean.TestBean">
      select * from test
</select>

</mapper>