Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/mavens
问题：可能是导入的mybatis包出错，
我原来使用：
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
改为
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.5</version>
</dependency>
运行没有出现