在启动类加上@SpringBootApplication exclude = {DataSourceAutoConfiguration.class}

仍然出现

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

后来发现，由于项目中引入了

    <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>

druid-spring-boot-starter 会再次扫描数据源

解决方案：

@SpringBootApplication(exclude= {
        DataSourceAutoConfiguration.class,
        DruidDataSourceAutoConfigure.class
})