在運行Hibernate Hello World程序的時候，拋以下錯誤： view plain Exception in thread "main" org.hibernate.exception.L

在運行Hibernate Hello World程序的時候，拋以下錯誤： 

Exception in thread "main" org.hibernate.exception.LockAcquisitionException : Could not open connection
       at org.hibernate.exception.internal.SQLStateConversionDelegate.convert( SQLStateConversionDelegate.java:144)
       at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert( StandardSQLExceptionConverter.java:49 )
       at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert( SqlExceptionHelper.java:125)
       at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert( SqlExceptionHelper.java:110)
       at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection( LogicalConnectionImpl.java:304)
       at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection( LogicalConnectionImpl.java:169)
       at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doBegin( JdbcTransaction.java:67)
       at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.begin( AbstractTransactionImpl.java:160)
       at org.hibernate.internal.SessionImpl.beginTransaction( SessionImpl.java:1363)
       at com.ztesoft.hibernate.helloworld.StudentTest.main( StudentTest.java:25 )
Caused by: java.sql.SQLException: The Network Adapter could not establish the connection
       at oracle.jdbc.driver.T4CConnection.logon( T4CConnection.java:412 )
       at oracle.jdbc.driver.PhysicalConnection.<init>( PhysicalConnection.java:531)
       at oracle.jdbc.driver.T4CConnection.<init>( T4CConnection.java:221 )
       at oracle.jdbc.driver.T4CDriverExtension.getConnection( T4CDriverExtension.java:32)
       at oracle.jdbc.driver.OracleDriver.connect( OracleDriver.java:503 )
       at java.sql.DriverManager.getConnection(Unknown Source)
       at java.sql.DriverManager.getConnection(Unknown Source)
       at org.hibernate.service.jdbc.connections.internal.DriverManagerConnectionProviderImpl.getConnection( DriverManagerConnectionProviderImpl.java:192 )
       at org.hibernate.internal.AbstractSessionImpl$NonContextualJdbcConnectionAccess.obtainConnection( AbstractSessionImpl.java:278)
       at org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection( LogicalConnectionImpl.java:297)
       ... 5 more
Caused by: oracle.net.ns.NetException: The Network Adapter could not establish the connection
       at oracle.net.nt.ConnStrategy.execute( ConnStrategy.java:359 )
       at oracle.net.resolver.AddrResolution.resolveAndExecute( AddrResolution.java:422)
       at oracle.net.ns.NSProtocol.establishConnection( NSProtocol.java:672 )
       at oracle.net.ns.NSProtocol.connect( NSProtocol.java:237 )
       at oracle.jdbc.driver.T4CConnection.connect( T4CConnection.java:1042 )
       at oracle.jdbc.driver.T4CConnection.logon( T4CConnection.java:301 )
       ... 14 more
Caused by: java.net.ConnectException: Connection refused: connect
       at java.net.PlainSocketImpl.socketConnect( Native Method )
       at java.net.PlainSocketImpl.doConnect(Unknown Source)
       at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
       at java.net.PlainSocketImpl.connect(Unknown Source)
       at java.net.SocksSocketImpl.connect(Unknown Source)
       at java.net.Socket.connect(Unknown Source)
       at oracle.net.nt.TcpNTAdapter.connect( TcpNTAdapter.java:141 )
       at oracle.net.nt.ConnOption.connect( ConnOption.java:123 )
       at oracle.net.nt.ConnStrategy.execute( ConnStrategy.java:337 )
       ... 19 more

經過plsql客戶端發現oracle是能夠鏈接的，爲啥用hibernate來鏈接報鏈接拒絕呢？ 
找了半天發現是 hibernate.cfg.xml 

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
<session-factory>
    <!-- Database connection settings -->
    <property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
    <property name="connection.url">jdbc:oracle:thin:@localhost:1522:orcl</property>
    <property name="connection.username">scott</property>
    <property name="connection.password">tiger</property>


    <property name="dialect">
        org.hibernate.dialect.MySQLDialect
    </property>


    <property name="show_sql">true</property>

    <mapping resource="com/ztesoft/hibernate/helloworld/dto/Student.hbm.xml" />

</session-factory>
</hibernate-configuration>

配置文件中配置項

<property name="connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>

配置的有問題，因爲以前在本地安裝過兩個oracle實例，如今正用的oracle實例的監聽端口爲 1522，把上面的配置項中的監聽端口1521改爲1522就OK了