Failed to retrieve platformtransactionmanager for @ transactional test: [defaulttest]

Foreword: This is JUnit test class. I hope that the data can be rolled back after the test, and the previous data will not be affected. But I have no problem in other tutorials. I report an error, and then I check a lot of data, but it is fruitless. Finally, I solve it by myself

Error message: java.lang.illegalstateexception: failed to retrieve platformtransactionmanager for @ transactional test

java.lang.IllegalStateException: Failed to retrieve PlatformTransactionManager for @Transactional test: [[email protected] testClass = SystemServiceTest, testInstance = com.****.****[email protected], testMethod = [email protected], testException = [null], mergedContextConfiguration = [[email protected] 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.springfr[email protected]4d3167f4, org.springframework.boot.test.json.DuplicateJsonObje[email protected]87f383f, org.[email protected]0, org.springf[email protected]5891e32e, org.springframework.boot[email protected]0, org.springframework.boot.test.autocon[email protected]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]

The core reason for this problem in my project is that I have three different data sources in this large project, and JUnit does not know which data source transaction you want to roll back! It requires you to specify a platform transaction manager

Configuration of one of the primary data sources:

The test class then specifies the transactionmanager

Re run the test method, the problem is solved!

 
 


Read More: