If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.

Description:
 
Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource could be configured.
//无法配置数据库，没有指定url属性，并且无法配置embedded datasource
Reason: Failed to determine a suitable driver class
//原因：无法明确指定正确的驱动类（driver.class）
 
Action:
 
Consider the following:
    If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
    If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).
 
//建议：
//如果如果需要加载嵌入式的数据库，请将他放入路径中
//如果有数据库设置需要从指定配置文件中加载，需要调用该配置文件（目前没有活动的配置文件）
 
Process finished with exit code 1

程序入口处:
 
@SpringBootApplication
public class DemoApplication {
 
修改为:
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class DemoApplication {
}