下面是解决方法，快速搞定。
场景
初始化创建的 SpringBoot ，什么都没改怎么就报错了？
错误信息
2023-11-06 22:09:42.132 INFO 2364 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-11-06 22:09:42.144 ERROR 2364 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
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
解决方案
方案1
如果项目不需要数据库相关信息就排除此类的autoconfig
在 @SpringBootApplication 注解上加上 exclude ，解除自动加载DataSourceAutoConfiguration。
java">@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})
springboot启动类加上这个启动以后就可以正常运行。完整代码：
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application, args);
}
}
方案2
配置文件添加数据库链接信息
.properties 文件添加数据库配置信息（以mysql为例）：
spring.datasource.name=test
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=***.mysql.jdbc.Driver
.yml 文件添加数据库配置信息（已mysql为例）：
spring:
datasource:
name: test
url: jdbc:mysql://localhost:3306/test
username: root
password: 123456
driver-class-name: ***.mysql.jdbc.Driver
方案三：
配置pom.xml中yml或者properties扫描
需要在 pom 文件中 中添加如下来保证文件都能正常被扫描到并且加载成功。
<!-- 如果不添加此节点mybatis的mapper.xml文件都会被漏掉。 -->
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.yml</include>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.yml</include>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
<filtering>false</filtering>
</resource>
</resources>
原因
根据报错日志分析是在 SpringBoot 项目启动的时候没有找到 database 数据库连接地址，我们知道在 SpringBoot 启动的时候会默认加载org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration 这个类，而 DataSourceAutoConfiguration 类使用了 @Configuration 注解向spring注入了dataSource bean，又因为项目中并没有关于 dataSource 相关的配置信息，所以当spring创建dataSource bean时因缺少相关的信息就会报错。
