Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2021-10-28 13:48:06.381 ERROR 276 --- [ 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). 2021-10-28 13:48:06.392 ERROR 276 --- [ main] o.s.test.context.TestContextManager : Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@434a63ab] to prepare test instance [com.abtu.ApiApplicationTests@49a71302] java.lang.IllegalStateException: Failed to load ApplicationContext at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132) ~[spring-test-5.3.5.jar:5.3.5] at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124) ~[spring-test-5.3.5.jar:5.3.5] at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190) ~[spring-test-5.3.5.jar:5.3.5] at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132) ~[spring-test-5.3.5.jar:5.3.5] at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244) ~[spring-test-5.3.5.jar:5.3.5] at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138) [spring-test-5.3.5.jar:5.3.5] at org.junit.jupiter.engine.descriptor.ClassbasedTestDescriptor.lambda$invokeTestInstancePostProcessors$6(ClassbasedTestDescriptor.java:350) [junit-jupiter-engine-5.7.1.jar:5.7.1] at org.junit.jupiter.engine.descriptor.ClassbasedTestDescriptor.executeAndMaskThrowable(ClassbasedTestDescriptor.java:355) [junit-jupiter-engine-5.7.1.jar:5.7.1] at org.junit.jupiter.engine.descriptor.ClassbasedTestDescriptor.lambda$invokeTestInstancePostProcessors$7(ClassbasedTestDescriptor.java:350) [junit-jupiter-engine-5.7.1.jar:5.7.1] at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_221] at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_221] at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382) ~[na:1.8.0_221] at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482) ~[na:1.8.0_221]
聚合工程的大坑：
有两个application.yml
默认yml级别高于properties，两个yml，则执行最先加载的yml。下一个yml不执行。我的第一个yml为空，配置再第二个yml中，配置不被加载，就报错。解决方法，将配置放到第一个yml中，或者将第一个yml改为properties
绿色不报错！！！
