报错记录解决Junit测试报错Failed to retrieve PlatformTransactionManager for @Transactional test: [DefaultTest(代

Posted 2021-07-08 DCTANT

前言：我这个是Junit测试类，希望测试完成后数据能够回滚，不影响之前的数据，但是我看别的教程都没问题，就我这个报错了，然后查了一堆资料也无果，最后还是靠自己解决了

报错信息：java.lang.IllegalStateException: Failed to retrieve PlatformTransactionManager for @Transactional test

java.lang.IllegalStateException: Failed to retrieve PlatformTransactionManager for @Transactional test: [DefaultTestContext@6356695f testClass = SystemServiceTest, testInstance = com.****.****.oc.coresystem.service.SystemServiceTest@716f94c1, testMethod = update@SystemServiceTest, testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@4f18837a testClass = SystemServiceTest, locations = '{}', classes = '{class com.****.****.Application, class com.****.****.Application}', contextInitializerClasses = '[]', activeProfiles = '{dev}', propertySourceLocations = '{}', propertySourceProperties = '{org.springframework.boot.test.context.SpringBootTestContextBootstrapper=true}', contextCustomizers = set[org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@4d3167f4, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@87f383f, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@0, org.springframework.boot.test.web.client.TestRestTemplateContextCustomizer@5891e32e, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@42607a4f], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.boot.test.context.SpringBootContextLoader', parent = [null]], attributes = map['org.springframework.test.context.web.ServletTestExecutionListener.activateListener' -> false]]
	at org.springframework.util.Assert.state(Assert.java:94) ~[spring-core-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.transaction.TransactionalTestExecutionListener.beforeTestMethod(TransactionalTestExecutionListener.java:185) ~[spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.TestContextManager.beforeTestMethod(TestContextManager.java:291) ~[spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190) [spring-test-5.1.18.RELEASE.jar:5.1.18.RELEASE]
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137) [junit-4.12.jar:4.12]
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69) [junit-rt.jar:na]
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33) [junit-rt.jar:na]
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:220) [junit-rt.jar:na]
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:53) [junit-rt.jar:na]

在我这项目中导致这个问题的核心原因是：我这个大型项目有3个不同的数据源，而Junit并不知道你要回滚的是哪个数据源的事务！它需要你去指定一个事务管理器（PlatformTransactionManager）才行

其中一个主数据源的配置：

然后Test类指定TransactionManager

重新运行测试方法，问题圆满解决！