org.springframework.beans.NotWritablePropertyException

Question

我尝试使用LocalSessionFactory运行一个spring项目，我得到一个空指针'因为我要初始化classLoader。无论如何我最终得到了这个例外！

Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'sessionFactoryClassLoader' of bean class [org.springframework.orm.hibernate3.LocalSessionFactoryBean]: Bean property 'sessionFactoryClassLoader' is not writable or has an invalid setter method.

setter的参数类型是否与getter的返回类型匹配？

有什么建议吗？

以下是实施：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:tx="http://www.springframework.org/schema/tx"
  xmlns:context="http://www.springframework.org/schema/context"
  xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-3.0.xsd">
 <!-- Data Source Declaration -->
 <bean id="DataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
  <property name="driverClassName" value="org.postgresql.Driver" />
        <property name="url" value="jdbc:postgresql://localhost:5432/Database" />
        <property name="username" value="postgres" />
        <property name="password" value="password" />

 </bean>


 <!-- Session Factory Declaration -->
    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="DataSource"></property>
        <property name="mappingLocations">
            <list>
                <value>classpath:META-INF/products.xml
                </value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.cache.use_query_cache">true</prop>
                <prop key="hibernate.cache.use_second_level_cache">true</prop>
                <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>
            </props>
        </property>
        <property name="sessionFactoryClassLoader" ref="portletClassLoader" />
    </bean>

 <!-- Enable the configuration of transactional behavior based on annotations -->
    <tx:annotation-driven transaction-manager="txManager"/>

 <!-- Transaction Manager is defined -->
    <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
       <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
        <bean id="portletClassLoader" class="com.liferay.portal.kernel.portlet.PortletClassLoaderUtil" factory-method="getClassLoader" />
    </beans>

顺便说一句，我想用另外一个使用springFramework或hibernate Libraries的classLoader替换com.liferay.portal.kernel.portlet.PortletClassLoaderUtil！

Answer 1

sessionFactoryClassLoader不是org.springframework.orm.hibernate3.LocalSessionFactoryBean的属性。 它可用于扩展SessionFactoryImpl的PortletSessionFactory实现。