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。
@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=com.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: com.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。
