org.springframework.dao.DataIntegrityViolationException: PreparedStatementCallback; SQL [insert into selection(student,course) values (?,?)]; Cannot add or update a child row: a foreign key constraint fails (`selection_course`.`selection`, CONSTRAINT `FK_Reference_2` FOREIGN KEY (`student`) REFERENCES `student` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT); nested exception is java.sql.BatchUpdateException: Cannot add or update a child row: a foreign key constraint fails (`selection_course`.`selection`, CONSTRAINT `FK_Reference_2` FOREIGN KEY (`student`) REFERENCES `student` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT)

at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:247)

at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)

at org.springframework.jdbc.core.JdbcTemplate.translateException(JdbcTemplate.java:1443)

at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633)

at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:647)

at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:936)

at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:990)

at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:981)

at Test.testBaatchUpdate2(Test.java:48)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)

at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)

at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)

at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)

at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)

at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)

at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)

at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)

at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)

at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

at org.junit.runners.ParentRunner.run(ParentRunner.java:363)

at org.junit.runner.JUnitCore.run(JUnitCore.java:137)

at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)

at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)

at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)

at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

Caused by: java.sql.BatchUpdateException: Cannot add or update a child row: a foreign key constraint fails (`selection_course`.`selection`, CONSTRAINT `FK_Reference_2` FOREIGN KEY (`student`) REFERENCES `student` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

at com.mysql.cj.util.Util.handleNewInstance(Util.java:192)

at com.mysql.cj.util.Util.getInstance(Util.java:167)

at com.mysql.cj.util.Util.getInstance(Util.java:174)

at com.mysql.cj.jdbc.exceptions.SQLError.createBatchUpdateException(SQLError.java:224)

at com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchSerially(ClientPreparedStatement.java:853)

at com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchInternal(ClientPreparedStatement.java:435)

at com.mysql.cj.jdbc.StatementImpl.executeBatch(StatementImpl.java:796)

at org.springframework.jdbc.core.JdbcTemplate.lambda$batchUpdate$2(JdbcTemplate.java:950)

at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:617)

... 27 more

Caused by: java.sql.SQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails (`selection_course`.`selection`, CONSTRAINT `FK_Reference_2` FOREIGN KEY (`student`) REFERENCES `student` (`id`) ON DELETE RESTRICT ON UPDATE RESTRICT)

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:117)

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)

at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122)

at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953)

at com.mysql.cj.jdbc.ClientPreparedStatement.executeUpdateInternal(ClientPreparedStatement.java:1092)

at com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchSerially(ClientPreparedStatement.java:832)

... 31 more