课堂管理系统ssm后端

com.intellij.database.serialization.ImportException: RDBMS is not specified int the model file at com.intellij.database.serialization.ModelImporter.deserializeModel(ModelImporter.java:57) at com.intellij.database.serialization.ModelSerializerKt.deserialize(ModelSerializer.kt:37) at com.intellij.database.serialization.ModelSerializerKt.deserialize(ModelSerializer.kt:27) at com.intellij.database.dataSource.DataSourceStorage.readModel(DataSourceStorage.java:706) at com.intellij.database.dataSource.DataSourceStorage.readModel(DataSourceStorage.java:694) at com.intellij.database.dataSource.DataSourceStorage.loadModels(DataSourceStorage.java:511) at com.intellij.database.dataSource.DataSourceStorage.access$000(DataSourceStorage.java:90) at com.intellij.database.dataSource.DataSourceStorage$2.run(DataSourceStorage.java:421) at com.intellij.openapi.progress.impl.CoreProgressManager$TaskRunnable.run(CoreProgressManager.java:750) at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157) at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:580) at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:525) at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:85) at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144) at com.intellij.openapi.progress.impl.CoreProgressManager$4.run(CoreProgressManager.java:395) at com.intellij.openapi.application.impl.ApplicationImpl$1.run(ApplicationImpl.java:305) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)