OpenSessionInViewFilter 在 JSF+Spring+Hibernate 应用程序中不起作用
我想在我的 JSF 2.1+Spring 3.1+Hibernate 3.6.6 项目中使用 OpenSessionInViewFilter 为了摆脱.LazyInitializationException。 虽然我在 web.xml 中声明了过滤器,但我不断收到;
org.hibernate.LazyInitializationException:延迟初始化失败 角色集合:pts.entity.Invention.inventors,无 会话或会话已关闭
我的 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.tt</url-pattern>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>primefaces.THEME</param-name>
<param-value>excite-bike</param-value>
</context-param>
<listener>
<listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
</listener>
<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>openSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>openSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
我的 applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<import resource="classpath:applicationContext-security.xml" />
<context:annotation-config />
<context:component-scan base-package="pts.component" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>pts.entity</value>
</list>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/PTS" />
<property name="username" value="root" /> <property name="password"
value="" />
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"
name="template">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="transactionTemplate"
class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="txManager" />
</bean>
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="view">
<bean class="pts.scope.ViewScope" />
</entry>
</map>
</property>
</bean>
</beans>
我使用 spring 管理(HibernateTemplate)hibernate daos 进行数据库操作。感谢您的帮助。
I want to use OpenSessionInViewFilter in my JSF 2.1+Spring 3.1+Hibernate 3.6.6 project
in order to get rid of the .LazyInitializationException.
Although i declare the filter in web.xml i keep getting ;
org.hibernate.LazyInitializationException: failed to lazily initialize
a collection of role: pts.entity.Invention.inventors, no
session or session was closed
My web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.tt</url-pattern>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>primefaces.THEME</param-name>
<param-value>excite-bike</param-value>
</context-param>
<listener>
<listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</listener-class>
</listener>
<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>openSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>openSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
My applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<import resource="classpath:applicationContext-security.xml" />
<context:annotation-config />
<context:component-scan base-package="pts.component" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>pts.entity</value>
</list>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/PTS" />
<property name="username" value="root" /> <property name="password"
value="" />
</bean>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate"
name="template">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<bean id="transactionTemplate"
class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager" ref="txManager" />
</bean>
<bean class="org.springframework.beans.factory.config.CustomScopeConfigurer">
<property name="scopes">
<map>
<entry key="view">
<bean class="pts.scope.ViewScope" />
</entry>
</map>
</property>
</bean>
</beans>
I use spring managed(HibernateTemplate) hibernate daos for db operations.Thanks for the help.
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您只需确保您没有在 JSF 视图之间重定向,例如:
在此视图中,您的 Open Session in vew Filter 将起作用:
并且如果您以这种方式修改此示例:
您的过滤器将无法帮助您,因为您正在重定向,并且此是全新的请求,并且您原来的 Hibernate 会话已经关闭。
受到这篇文章的启发:
JSF 中的 OpenSessionInViewFilter +重定向
You just have to be sure that you are not redirecting between JSF view for example:
In this view your Open Session in vew Filter will work:
and if you modify this example this way:
Your Filter will bnot help you because you are redirecting and this is completely new request and your original Hibernate session is already closed.
Inspired by this post:
OpenSessionInViewFilter +Redirect in JSF
什么时候会失败?我可以看到您使用 Spring Security 并在 web.xml 中定义了 springSecurityFilterChain 。并且假设过滤器从数据库加载用户,并且用户具有稍后访问的惰性集合,当身份验证期间创建的 Hibernate 会话可能关闭时,在 OpenSessionInView 过滤器开始执行之前。
请记住,过滤器映射顺序是有意义的,过滤器按照声明过滤器映射的顺序执行。我会先尝试重新排序。
When does it fail? I can see that you use Spring Security and have springSecurityFilterChain defined in you web.xml. And would assume that filter loads user from database and user has lazy collection that is accessed later, when Hibernate session created during authentication is propably closed, before OpenSessionInView filter starts executing.
Remember that filter-mapping order makes sense, filter executed in the order of their filter mappings are declared. I would try reorder them first.