小结
Spring Boot报错：没有配置数据源（url属性未设置），进行解决。
问题
Spring Boot报错：
ERROR 2024-08-28 17:24:43.734 [main] -
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APPLICATION FAILED TO START
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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 (the profiles default are currently active).
解决
办法一
具体原因，项目调用FeignClient数据源，因此不需要配置数据源，在主应用里关闭数据源的设置。将注@SpringBootApplication修改如下：
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class })
办法二
修改build.gradle配置文件，将以下设置从implementation改为compileOnly：
// implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
compileOnly 'org.springframework.boot:spring-boot-starter-data-jpa'
以上，问题解决。