IDEA 启动失败原因

IDEA启动spring 项目的时候报错内容如下.

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).

解决方案有2个, 一个是在启动类的头部加一个注解.
不建议这么干, 这样干了就不能自动更新数据库表结构了.

@SpringBootApplication(exclude= {
    
    DataSourceAutoConfiguration.class})

第二个是真正的去解决这个问题产生的原因.
这原因就很多了,
一 有可能是你的配置没配.

二 有可能是数据库的驱动类没有.
检查pom.xml中是否有驱动类的配置
例如我的配置是

	<dependencies> 
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
	</dependencies> 

然后在IDEA中,更新一下配置, maven会自动去下载驱动类的jar包的.

祝你成功