Spring+Mybatis整合报错Mapped Statements collection does not contain value原因之一

报错如下：

### Error updating database.  Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.xxx.entity.UserMapper.insert
### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for com.xxx.entity.UserMapper.insert
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:75)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:371)
    at com.sun.proxy.$Proxy10.insert(Unknown Source)
    at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:240)

可能的原因是：mapperLocations的value值classpath缺少了*号

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <property name="mapperLocations" value="classpath:com/xxx/*/mapper/*.xml" />
    </bean>

修改如下：

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 -->
        <property name="mapperLocations" value="classpath*:com/xxx/*/mapper/*.xml" />
    </bean>