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

方法一：

创建一个spring boot demo，启动main方法出现如下错误

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

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).

Process finished with exit code 1

原因：由于创建的spring boot的时候在pom.xml上引入了mybatis包的原因，而在配置文件中没有涉及，所以之后在pom.xml上删除mybatis包的引入就行。

方法二：

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class BdservoApplication {
 
    public static void main(String[] args) {
        SpringApplication.run(BdservoApplication.class, args);
    }
}