Question

我的应用程序上下文看起来很喜欢这个，

<bean id="caseTxBo" class="gov.case.rcp.bo.impl.caseTxBoImpl" >
            <property name="caseTxDao" ref="caseTxDao" />
    </bean>
    <bean id="caseTxDao" class="gov.case.rcp.dao.impl.caseTxDaoImpl" >
            <property name="sessionFactory" ref="sessionFactory" />

Action类获取如下的上下文：

ServletContext context = request.getSession().getServletContext();
     BeanFactory factory = WebApplicationContextUtils.
           getRequiredWebApplicationContext(context);
     CaseTxBOImpl caseTxBo = (

             caseTxBoImpl) factory.getBean("caseTxBo");

     List<caseTxPmt> errorVarList =       
     caseTxBo.getcaseTxDao().findAllcaseTx();

    model.put("caseTxList", caseTxList);

BOImpl实现Dao和DAOImpl实现Dao：

DaoImpl具有实现并返回caseTxList。

但是我得到了一个runTimeException

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'caseTxBo' defined in ServletContext resource [/WEB-INF/classes/applicationContext.xml]: Cannot resolve reference to bean 'caseTxDao' while setting bean property 'caseTxDao'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'caseTxDao' defined in ServletContext resource [/WEB-INF/classes/applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'sessionFactory' of bean class [gov.case.rcp.pp.dao.impl.CaseTxDaoImpl]: Bean property 'sessionFactory' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?
follows:
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:275)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:104)

我哪里出错？

Answer 1

Bean属性'sessionFactory'不可写或具有无效的setter方法。 setter的参数类型是否与getter的返回类型匹配？如下：在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference（BeanDefinitionValueResolver.java:275）

错误信息非常清楚。打开CaseTxDaoImpl并确保其中有以下方法：

public void setSessionFactory(SessionFactory sessionFactory) {
    this.sessionFactory = sessionFactory;
}

BTW：

ServletContext context = request.getSession().getServletContext();
BeanFactory factory = WebApplicationContextUtils.
       getRequiredWebApplicationContext(context);
factory.getBean("caseTxBo")

是Spring的低级用法和反模式。您使用的是任何Web框架吗？通常它们很好地与Spring集成。

Bean创建异常

1 个答案: