Mybatis Exception getting JDBC Driver

在pom.xml中添加mysql的依赖：

<build>
    <plugins>
      <plugin>
        <dependencies>
          <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>xxx</version>
            <scope>runtime</scope>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>