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TestUserDAOimpl一直出错，看不懂错哪了，一直在调

六月 07, 2017 10:42:31 上午 org.hibernate.Version logVersion

INFO: HHH000412: Hibernate Core {5.2.10.Final}

六月 07, 2017 10:42:31 上午 org.hibernate.cfg.Environment <clinit>

INFO: HHH000206: hibernate.properties not found

六月 07, 2017 10:42:47 上午 org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>

INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}

六月 07, 2017 10:42:48 上午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure

WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)

六月 07, 2017 10:42:48 上午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator

INFO: HHH10001005: using driver [com.microsoft.sqlserver.jdbc.SQLServerDriver] at URL [jdbc:sqlserver://localhost:1433;DatabaseName=test]

六月 07, 2017 10:42:48 上午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator

INFO: HHH10001001: Connection properties: {user=sa, password=****}

六月 07, 2017 10:42:48 上午 org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator

INFO: HHH10001003: Autocommit mode: false

六月 07, 2017 10:42:48 上午 org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>

INFO: HHH000115: Hibernate connection pool size: 20 (min=1)

六月 07, 2017 10:42:48 上午 org.hibernate.dialect.Dialect <init>

INFO: HHH000400: Using dialect: org.hibernate.dialect.SQLServerDialect

六月 07, 2017 10:42:48 上午 org.hibernate.engine.jdbc.env.internal.LobCreatorBuilderImpl useContextualLobCreation

INFO: HHH000423: Disabling contextual LOB creation as JDBC driver reported JDBC version [3] less than 4

六月 07, 2017 10:42:49 上午 org.hibernate.resource.transaction.backend.jdbc.internal.DdlTransactionIsolatorNonJtaImpl getIsolatedConnection

INFO: HHH10001501: Connection obtained from JdbcConnectionAccess [org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess@560513ce] for (non-JTA) DDL execution was not in auto-commit mode; the Connection 'local transaction' will be committed and the Connection will be set into auto-commit mode.

Hibernate: create table students (sid varchar(8) not null, sname varchar(255), gender varchar(255), birthday datetime, address varchar(255), primary key (sid))

六月 07, 2017 10:42:49 上午 org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl handleException

WARN: GenerationTarget encountered exception accepting command : Error executing DDL via JDBC Statement

org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL via JDBC Statement

at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67)

at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlString(AbstractSchemaMigrator.java:525)

at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.applySqlStrings(AbstractSchemaMigrator.java:470)

at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.createTable(AbstractSchemaMigrator.java:273)

at org.hibernate.tool.schema.internal.GroupedSchemaMigratorImpl.performTablesMigration(GroupedSchemaMigratorImpl.java:71)

at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.performMigration(AbstractSchemaMigrator.java:203)

at org.hibernate.tool.schema.internal.AbstractSchemaMigrator.doMigration(AbstractSchemaMigrator.java:110)

at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:183)

at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:72)

at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:309)

at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:452)

at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:710)

at db.MyhibernateSessionFactory.getSessionFactory(MyhibernateSessionFactory.java:21)

at service.impl.UsersDAOimpl.userLogin(UsersDAOimpl.java:35)

at service.impl.TestUsersDAOimpl.testUsersLogin(TestUsersDAOimpl.java:18)

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

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)

at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)

at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)

at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)

at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)

at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66)

at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35)

at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)

at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)

at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)

at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)

at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)

at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 数据库中已存在名为 'students' 的对象。

at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDatabaseError(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerStatement.getNextResult(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteStatement(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerStatement$StmtExecCmd.doExecute(Unknown Source)

at com.microsoft.sqlserver.jdbc.TDSCommand.execute(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeCommand(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeStatement(Unknown Source)

at com.microsoft.sqlserver.jdbc.SQLServerStatement.execute(Unknown Source)

at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54)

... 34 more

Hibernate: create table users (userid int identity not null, username varchar(255), password varchar(255), primary key (userid))