IDEA 提示Caused by: java.lang.ClassNotFoundException: org.apache.ibatis.session.SqlSession

启动项目，控制台打印错误信息，其中一条如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.mybatis.spring.mapper.MapperScannerConfigurer#0' defined in class path resource [applicationContext.xml]: Initialization of bean failed; nested exception is java.lang.NoClassDefFoundError: org/apache/ibatis/session/SqlSession

Caused by: java.lang.ClassNotFoundException: org.apache.ibatis.session.SqlSession
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1328)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1156)
    ... 79 more

很明显，缺少SqlSession这个bean

问题一：缺少jar包

解决方法：在pom.xml文件导入jar包

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.7</version>
    </dependency>
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.2</version>
    </dependency>

问题二：配置sqlSessionFactory不正确

解决方法：配置sqlSessionFactory

<!-- 配置sqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml"></property>
        <property name="mapperLocations">
            <array>
                <value>classpath:mybatis.base/*Mapper.xml</value>
                <value>classpath:mybatis.expert/*Mapper.xml</value>
            </array>
        </property>
        <!-- 指定别名包 -->
        <property name="typeAliasesPackage" value="com.base.entity,com.base.entityVo,com.expert.entity,com.expert.entityVo" />
    </bean>

问题三：jar已经导入，配置也正常，但把项目拉到其他地方运行报错

解决方法：问题出现在artifacts里出现多个部署文件，导致冲突。最简单的就是把之前的部署文件删除，重新build。