0

我有一个简单的弹簧上下文文件如下:

<bean id="acl.provider" class="com.provider.ProviderType" factory-method="getInstance">
    <constructor-arg index="0" value="${provider}"/>
</bean>

<bean id="acl.authentication" class="com.provider.AuthenticationFactory">
    <constructor-arg index="0">
        <value>#{ @acl.provider==T(com.provider.ProviderType).A
                  ?'classpath:cfg/a.spax'
                  :null}</value>
    </constructor-arg>
</bean>

当我初始化上述上下文时,出现以下错误:

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'acl' is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:527)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1083)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:274)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
    at org.springframework.context.expression.BeanFactoryResolver.resolve(BeanFactoryResolver.java:44)
    ... 124 more

当我将acl.providerbean 名称更改为aclprovider(删除.字符)时,一切正常。

我的问题是:为什么.字符在 bean 名称中使用并在中使用SpEL

4

1 回答 1

0

我发现解决方案""的用途SpEL如下:

<bean id="acl.provider" class="com.provider.ProviderType" factory-method="getInstance">
    <constructor-arg index="0" value="${provider}"/>
</bean>

<bean id="acl.authentication" class="com.provider.AuthenticationFactory">
    <constructor-arg index="0">
        <value>#{ @"acl.provider"==T(com.provider.ProviderType).A
                  ?'classpath:cfg/a.spax'
                  :null}</value>
    </constructor-arg>
</bean>

我的问题解决了。

于 2013-03-10T09:07:29.090 回答