其他配置均没有任何问题，在从SQLServer2005迁移到SQLServer2012的时候一直出现这个问题

 org.hibernate.exception.JDBCConnectionException: Cannot open connection
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:97)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
 at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
 at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
 at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1577)
 at org.hibernate.loader.Loader.doQuery(Loader.java:696)
 at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259)
 at org.hibernate.loader.Loader.doList(Loader.java:2232)
 at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2129)
 at org.hibernate.loader.Loader.list(Loader.java:2124)
 at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401)
 at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:363)
 at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196)
 at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1149)
 at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102)
 at cn.edu.shu.testdemo.TestHibernate.queryByColumnName(TestHibernate.java:103)
 at cn.edu.shu.testdemo.TestHibernate.getColumnNameByValue(TestHibernate.java:141)
 at cn.edu.shu.testdemo.TestHibernate.test(TestHibernate.java:183)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
 at java.lang.reflect.Method.invoke(Method.java:601)
 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
 at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: 通过端口 1433 连接到主机 localhost 的 TCP/IP 连接失败。错误:“Connection refused: connect。请验证连接属性。确保 SQL Server 的实例正在主机上运行，且在此端口接受 TCP/IP 连接，还要确保防火墙没有阻止到此端口的 TCP 连接。”。
 at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
 at com.microsoft.sqlserver.jdbc.SQLServerException.ConvertConnectExceptionToSQLServerException(SQLServerException.java:241)
 at com.microsoft.sqlserver.jdbc.SocketFinder.findSocket(IOBuffer.java:2243)
 at com.microsoft.sqlserver.jdbc.TDSChannel.open(IOBuffer.java:491)
 at com.microsoft.sqlserver.jdbc.SQLServerConnection.connectHelper(SQLServerConnection.java:1309)
 at com.microsoft.sqlserver.jdbc.SQLServerConnection.login(SQLServerConnection.java:991)
 at com.microsoft.sqlserver.jdbc.SQLServerConnection.connect(SQLServerConnection.java:827)
 at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1012)
 at java.sql.DriverManager.getConnection(DriverManager.java:579)
 at java.sql.DriverManager.getConnection(DriverManager.java:190)
 at org.hibernate.connection.DriverManagerConnectionProvider.getConnection(DriverManagerConnectionProvider.java:133)
 at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
 ... 39 more

之后重新启动SQLServer服务即可。

Hibernate3.3连接Sqlserver2012一直连接不上