Question

faces-config.xml中

- org.springframework.web.jsf.DelegatingVariableResolver

的applicationContext.xml

<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory" />
</bean>  
<tx:annotation-driven  />
<context:component-scan base-package="com.test"/>

index.xhtml

<h:outputText value="#{authBean.val}"/>

AuthBean.java

package com.test.ui;

@Component
@Scope("session")
public class AuthBean {

    @Getter @Setter private String val;

    @Transactional  public void test(){}    //works fine if @Transactional is removed

工作正常，但是当使用@Transactional注释方法时，会发生以下错误

16:23:13,906 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/jbtst].[Faces Servlet]] (http-localhost-127.0.0.1-8080-1) Servlet.service() for servlet Faces Servlet threw exception: javax.el.PropertyNotFoundException: /index.xhtml @14,49 value="#{authBean.val}": The class '$Proxy28' does not have the property 'val'.
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:111) [jsf-impl-2.1.7-jbossorg-2.jar:]
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]
    at javax.faces.component.UIOutput.getValue(UIOutput.java:169) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]

使用spring-3.1，hibernate3

Answer 1

当您使用@Transactional时，Spring会创建一个代理，该代理实现与您的类相同的接口，但您的AuthBean类不实现接口。

解决这个问题的最简单方法是使用val属性定义一个接口并让AuthBean实现该接口，然后代理也将具有val属性。

Answer 2

这有助于annotation equivalent of <aop:scoped-proxy>

<context:component-scan base-package="com.test" scoped-proxy="targetClass" />

春天不与@Transactional合作

2 个答案: