spring hibernate 连接问题

[lycgxy]

单元测试是正确的，运行后,就出以下错误
org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Cannot open connection
at org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:521)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:350)
at org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:261)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:101)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)

[sprite26]

是Session关闭的原因..你是不是数据库连接没有配对，还是sessionFactory的配置没有配好

[ranshaoweng]

Cannot open connection
好好看看链接

[xnjnmn]

有可能是版本问题
spring1.2 hibernate3.0

[lycgxy]

spring2.5+ hibernate3.0

applicationContext.xml中的hibernate配置：
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="org.apache.derby.jdbc.ClientDriver"/>
<property name="url" value="jdbc:derby://localhost:1527/travel"/>
<property name="username" value="travel"/>
<property name="password" value="travel"/>
<!-- 连接池启动时的初始值 -->
<property name="initialSize" value="1"/>
<!-- 连接池的最大值 -->
<property name="maxActive" value="500"/>
<!-- 最大空闲值.当经过一个高峰时间后，连接池可以慢慢将已经用不到的连接慢慢释放一部分，一直减少到maxIdle为止 -->
<property name="maxIdle" value="2"/>
<!-- 最小空闲值.当空闲的连接数少于阀值时，连接池就会预申请去一些连接，以免洪峰来时来不及申请 -->
<property name="minIdle" value="1"/>
</bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="mappingResources">
<list>
<value>webapplication1/hibernate/Person.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.DerbyDialect
hibernate.hbm2ddl.auto=update
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.cache.use_query_cache=false
</value>
</property>
</bean>
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>

一直是这么写的，开始还能运行，加了东西后就不行了，恢复后也不行了

[lycgxy]

啥子问题都 没得，数据的问题，造成了前台数据模型，的空指针