springboot启动时出现Failed to determine a suitable driver class异常

Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured.
启动时出现此异常 时启动类当中

@SpringBootApplication(exclude={DataSourceAutoConfiguration.class})
@EnableEurekaClient
public class FileApplication {

    public static void main(String[] args) {
        SpringApplication.run(FileApplication.class);
    }
}

缺少exclude={DataSourceAutoConfiguration.class} 次注解可以忽略数据库源的必要