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我正在研究特定的應用程序，一個spring + hibernate安裝程序。我在flex中有一個前端，現在我試圖添加一個jstl前端。我得到的延遲初始化異常是當我嘗試從jstl模型和視圖控制器中調用一個方法時，我從我的flex調用中調用該方法時沒有任何問題。spring + jstl + hibernate懶惰初始化異常，如何在Flex前端找到工作
這裏是我的web.xml：
<?xml version="1.0" encoding="UTF-8"?>
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd」 版本= 「2.4」>
<display-name>HTML test project</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>com.bamboo.common.factory.Log4JContextListener</listener-class>
</listener>
<!--<context-param>
<param-name>webAppRootKey</param-name>
<param-value>app.root</param-value>
</context-param>
<context-param>
<param-name>log4jConfigLocation</param-name>
<param-value>/WEB-INF/log4j.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Http Flex Session attribute and binding listener support -->
<listener>
<listener-class>flex.messaging.HttpFlexSession</listener-class>
</listener>
<servlet>
<servlet-name>ApplicationContextFactory</servlet-name>
<servlet-class>com.bamboo.common.factory.ApplicationContextFactory</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>MessageBrokerServlet</servlet-name>
<servlet-class>flex.messaging.MessageBrokerServlet</servlet-class>
<init-param>
<param-name>services.configuration.file</param-name>
<param-value>/WEB-INF/flex/services-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>MessageBrokerServlet</servlet-name>
<url-pattern>/messagebroker/*</url-pattern>
</servlet-mapping>
<!-- JSTL dispatcher-servlet -->
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
這裏我打開我的應用程序上下文，這是我理解的負荷從後端，我會用豆子，把我的Hibernate配置和方面的conf igurations。之後，我加載了彈性消息傳遞servlet，我知道它允許flex和spring進行通信，最後是調度程序servlet，它將把所有的.htm請求映射到jstl控制器和視圖。
這裏是我的應用程序上下文：
<?xml version="1.0" encoding="UTF-8"?>
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd「>
<!-- ========================= GENERAL DEFINITIONS ========================= -->
<!-- ========================= DATA ACCESS OBJECT DEFINITIONS ======================== -->
<bean id="dataSource"
class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
<value>java:comp/env/jdbc/catWDB</value>
</property>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource"><ref local="dataSource"/></property>
<property name="mappingResources">
<list>
<value>/com/bamboo/catW3/catW3.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.connection.pool_size">3</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="transactionManager" lazy-init="true" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="categoryDAOTarget" class="com.bamboo.catW3.DAO.impl.CategoryDAOImpl">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="containerDAOTarget" class="com.bamboo.catW3.DAO.impl.ContainerDAOImpl">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="productDAOTarget" class="com.bamboo.catW3.DAO.impl.ProductDAOImpl">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="productOptionDAOTarget" class="com.bamboo.catW3.DAO.impl.ProductOptionDAOImpl">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="productStatusDAOTarget" class="com.bamboo.catW3.DAO.impl.ProductStatusDAOImpl">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="userDAOTarget" class="com.bamboo.catW3.DAO.impl.UserDAOImpl">
<property name="sessionFactory"><ref local="sessionFactory"/></property>
</bean>
<bean id="velocityEngine" class="org.springframework.ui.velocity.VelocityEngineFactoryBean">
<property name="velocityProperties">
<value>
resource.loader=class
class.resource.loader.class=org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
</value>
</property>
</bean>
<!-- ========================= BUSINESS OBJECT DEFINITIONS ======================== -->
<bean id="catalogFacadeTarget" class="com.bamboo.catW3.business.impl.CatalogFacadeImpl">
<property name="categoryDAO"><ref local="categoryDAOTarget"/></property>
<property name="containerDAO"><ref local="containerDAOTarget"/></property>
<property name="productDAO"><ref local="productDAOTarget"/></property>
<property name="productOptionDAO"><ref local="productOptionDAOTarget"/></property>
<property name="productStatusDAO"><ref local="productStatusDAOTarget"/></property>
<property name="userDAO"><ref local="userDAOTarget"/></property>
</bean>
<!-- ================================ VIEW RESOLVER ===================================== -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass">
<value>org.springframework.web.servlet.view.JstlView</value>
</property>
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
<!-- ========================= ASPECT CONFIGURATION ======================== -->
<bean id="catalogFacade" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
<property name="transactionManager">
<ref local="transactionManager"/>
</property>
<property name="target">
<ref local="catalogFacadeTarget"/>
</property>
<property name="transactionAttributes">
<props>
<prop key="add*">PROPAGATION_REQUIRED</prop>
<prop key="save*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="remove*">PROPAGATION_REQUIRED</prop>
<prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
<prop key="contains*">PROPAGATION_SUPPORTS,readOnly</prop>
<prop key="login*">PROPAGATION_SUPPORTS,readOnly</prop>
</props>
</property>
</bean>
所以我想做的事情，並假設我到現在爲止，是共享目錄FacadeTarget bean與Flex，並從jstl設置與控制器。因此，我可以調用我從Flex調用相同的方法，現在從控制使用模型和查看方法。我以爲這樣我就不會遇到任何問題。這裏是我的調度員的servlet：
<?xml version="1.0" encoding="UTF-8"?>
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd「>
<!-- URL mapping -->
<bean id="urlMap"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="urlMap">
<props>
<prop key="/welcome.htm">welcome</prop>
<prop key="/welcome">welcome</prop>
<prop key="/catalog.htm">catalog</prop>
<prop key="/catalog">catalog</prop>
</props>
</property>
</bean>
<!-- Controllers -->
<bean name="welcome"
class="com.bamboo.catW3.business.impl.Welcome">
<property name="successView">
<value>welcome</value>
</property>
<property name="catalogFacadeImpl" ref="catalogFacadeTarget"/>
</bean>
<bean name="catalog"
class="com.bamboo.catW3.business.impl.Catalog">
<property name="successView">
<value>catalog</value>
</property>
<property name="catalogFacadeImpl" ref="catalogFacadeTarget"/>
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass">
<value>org.springframework.web.servlet.view.JstlView</value>
</property>
<property name="prefix">
<value>/WEB-INF/jsp/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
現在這個工作正常，即使我的intellij IDE強調了catalogFacadeTarget引用，並且說我無法解析bean，這會很棒：如果有人知道如何讓他變成並且，也許讓我明白了：
<property name="catalogFacadeImpl" ref="*catalogFacadeTarget*"/>
這是工作的罰款對於那些沒有複雜的人際關係簡單的物體，比如我有一個不涉及任何表用戶，我可以從這樣做模型和查看方法在jstl控制器上：
List users = catalogFacadeImpl.getUserList();
沒問題，我得到用戶列表並打印它。但是，如果我儘量讓這更復雜的物體上，具有與自身的關係的東西，就像對象類別：
List categories = catalogFacadeImpl.getCategoryList();
我得到exceptcion：
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: com.bamboo.catW3.domain.Category.categories, no session or session was closed
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:488)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:431)
javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
這通常是hbm和配置關係的問題，然而，這不可能是這樣，因爲從flex我稱這種方法非常相同，並沒有任何問題。所以我猜想我並沒有像我一樣分享這個bean。不，這也不會給我這個錯誤。
我現在非常困惑，任何有關在哪裏尋找的建議都會深表感謝。非常感謝你，試圖張貼HBM，以防萬一它幫助，但是這個帖子很長。
考慮編輯這個問題。這些問題往往不會被閱讀。 – 2010-11-14 22:57:49
未來會記住，得到這個答案，但不是完全閱讀。謝謝 – Ernest 2010-11-15 13:41:12