SpringBoot整合Mybatis-generator报错Exception getting JDBC Driver

SpringBoot整合Mybatis-generator出错：Failed to execute goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.6:generate (default-cli) on project user-center: Execution default-cli of goal org.mybatis.generator:mybatis-generator-maven-plugin:1.3.6:generate failed: Exception getting JDBC Driver

整合时提示获取JDBC 驱动时出现异常，检查generatorConfig.xml是否写错，如果从文档内复制的(可忽略)

 <jdbcConnection driverClass="${jdbc.driverClass}"
                        connectionURL="${jdbc.url}"
                        userId="${jdbc.user}"
                        password="${jdbc.password}">
</jdbcConnection>

如果还是异常检查驱动名称是否正确

jdbc.driverClass= com.mysql.jdbc.Driver
jdbc.url= jd