我在使用 Spring 3 时遇到了一些问题，包括注释和休眠。
我试图在将包含在所有其他 JSP 中的 JSP 中执行此操作，它是一个标头。
${pageContext['request'].userPrincipal.principal.notifications}
我的用户 pojo 与这样的通知有关系
@OneToMany(mappedBy="user", fetch = FetchType.LAZY)
protected Collection<Notification> notifications;
如果我从正确注释的控制器或服务中调用 getNotifications，我没有问题，但是当我尝试在 JSP 中执行代码时，我收到了一个像这样的 LazyInitializationException：
org.hibernate.LazyInitializationException: failed to lazily initialize a
collection of role: org.prog.para.model.pojo.user.User.notifications, no session or
session was closed
我阅读了有关 OpenSessionInViewFilter 的信息，但我不知道它为什么不起作用。
我的 web.xml ：
<filter>
<filter-name>OpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>OpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring/app-config.xml
/WEB-INF/spring/security-config.xml
</param-value>
</context-param>
<context-param>
<param-name>defaultHtmlEscape</param-name>
<param-value>true</param-value>
</context-param>
<servlet>
<servlet-name>para-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/mvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>para-mvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>/static/*</url-pattern>
</servlet-mapping>
我的 app-config.xml 文件是：
<context:component-scan base-package="org.prog.para">
<context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation" />
</context:component-scan>
<!-- Datasource -->
<import resource="ds-config.xml" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="org.prog.para.model.pojo" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.default_schema">schema</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="hibernateTransactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="hibernateTransactionManager"
proxy-target-class="true" mode="proxy" />
<bean id="emailTemplateResolver" class="org.thymeleaf.templateresolver.ServletContextTemplateResolver">
<property name="prefix" value="/WEB-INF/views/templates/" />
<property name="suffix" value=".html" />
<property name="characterEncoding" value="UTF-8" />
<property name="order" value="1" />
</bean>
<bean id="templateEngine" class="org.thymeleaf.spring3.SpringTemplateEngine">
<property name="templateResolvers" ref="emailTemplateResolver" />
</bean>
<bean id="viewResolver" class="org.thymeleaf.spring3.view.ThymeleafViewResolver">
<property name="templateEngine" ref="templateEngine" />
<property name="characterEncoding" value="UTF-8" />
</bean>
<bean id="springApplicationContext" class="org.prog.para.config.SpringApplicationContext" />
有谁知道我的失败在哪里？我不明白为什么在执行视图时我的会话关闭。
我可以将 FetchType.EAGER 放在通知集合上来解决它，但这不是我想要的。我需要它是一个懒惰的关系。
提前致谢 ！