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對於我的工作，我必須首次在項目中使用休眠。其實，一切都是由其他人建立的，現在我必須擴大「查詢」的範圍。 我們有一個Tomcat v7.0服務器運行在Eclipse,石英框架用於安排一個查詢每隔5分鐘。這個查詢然後由Hibernate執行/處理。我想我理解了大部分內容，但正如我所說的：我在這裏是一個新手，所以這個問題很愚蠢，但我無法使用Google/StackOverflow找到答案，所以在這裏。嘗試實例化休眠時發生SQLException（UnsupportedOperationException）
因爲我在冬眠的查詢配置中修改了一些東西，所以我總是得到null的結果。經過一番苦戰之後，我已經登錄並運行了。這是日誌的（我認爲）相關部分在啓動Tomcat服務器時，我得到：
30-apr-2012 11:02:32 org.hibernate.cfg.SettingsFactory buildSettings
WARNING: Could not obtain connection metadata
java.sql.SQLException: An SQLException was provoked by the following failure: java.lang.UnsupportedOperationException
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:65)
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:62)
at com.mchange.v2.c3p0.impl.NewPooledConnection.handleThrowable(NewPooledConnection.java:369)
at com.mchange.v2.c3p0.impl.NewProxyDatabaseMetaData.getDatabaseMajorVersion(NewProxyDatabaseMetaData.java:3692)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:126)
at org.hibernate.cfg.Configuration.buildSettingsInternal(Configuration.java:2863)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2859)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1870)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:753)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:691)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1390)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1359)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:540)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:485)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:170)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:268)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1274)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1042)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:485)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:170)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:268)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1274)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1042)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:485)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:169)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:170)
at com.mh2o.dbase.manager.HibernateDaoManager.getInstance(HibernateDaoManager.java:17)
at com.mh2o.dbase.wbuserlist.WelcomeBoardMgr.<init>(WelcomeBoardMgr.java:11)
at com.mh2o.application.cache.welcomeboard.WelcomeCache.synchronize(WelcomeCache.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:283)
at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:272)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:86)
at org.quartz.core.JobRunShell.run(JobRunShell.java:216)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: java.lang.UnsupportedOperationException
at sun.jdbc.odbc.JdbcOdbcDatabaseMetaData.getDatabaseMajorVersion(Unknown Source)
at com.mchange.v2.c3p0.impl.NewProxyDatabaseMetaData.getDatabaseMajorVersion(NewProxyDatabaseMetaData.java:3678)
... 53 more
30-apr-2012 11:02:32 org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
所以，似乎是在SQL錯誤。現在，我添加了一些文件，所以我想這就是出現錯誤的地方。該數據庫包含了可以加入到那些已經查詢的表的表，這是我做的：
employeeavailablehours.hbm.xml（其存儲在數據庫表）：
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.mh2o.application.vo.planningview" schema="N_C">
<class name="EmployeeAvailableHours" table="WerknemersBeschikbareUr">
<id column="ID" name="id" type="string">
<generator class="native"/>
</id>
<property column="InitialenWerknemer" name="initial" generated="never" lazy="false" not-null="true" type="string"/>
<property column="Vanaf" name="from" generated="never" lazy="false" not-null="true" type="string"/>
<property column="Tot" name="to" generated="never" lazy="false" not-null="true" type="string"/>
<property column="Volgnummer" name="indexnumber" generated="never" lazy="false" not-null="true" type="string"/>
</class>
</hibernate-mapping>
employeeinfo的.hbm.xml（通過有人創建了別人已經由我修改爲包括參考上表）：
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.mh2o.application.vo.planningview" schema="N_C">
<class name="EmployeeInfo" table="WerknemersInfo">
<id column="ID" name="id" type="string">
<generator class="native"/>
</id>
<property column="Naam" name="name" generated="never" lazy="false" not-null="true" type="string"/>
<property column="InitialenWerknemer" name="initial" generated="never" lazy="false" not-null="true" type="string"/>
<set name="employeeavailablehours" table="WerknemersBeschikbareUr" inverse="false" lazy="false" fetch="select">
<key>
<column name="InitialenWerknemer" not-null="true" />
</key>
<one-to-many class="EmployeeAvailableHours" />
</set>
</class>
</hibernate-mapping>
當然，我已經添加了新表，employeeava在context.xml中創建了一些可用的可用時間，並創建了用於表示xml文件中命名的新表中的數據的類。此外，我編輯了代表現有表格的類別，以便對我添加的表格進行引用。我認爲這不是出現錯誤的地方，查看異常，這就是爲什麼我不在這裏包含這些類的Java源代碼。如果需要，我當然會。
如果你們需要更多信息，請詢問我將編輯我的問題。提前致謝！
你使用jdbc-odbc橋連接使用休眠？檢查這個鏈接是否有幫助http://stackoverflow.com/questions/7289121/using-hibernate-via-an-odbc-connection – Kshitij
據我所知，我們不使用ODBC。我應該注意到，如果我刪除了對XML文件的修改，查詢就可以正常工作，所以我認爲這不是連接問題。 –