Question

我要做的是创建一个初始化日志记录代理的Struts基本操作。任何操作调用的所有服务都将使用此代理记录错误。然后，拦截器访问代理，然后执行实际的日志记录。一切都在编译，构建。但是部署我在Tomcat 7上遇到以下错误：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'journalVoucherService' defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Cannot resolve reference to bean '#{baseAction.logger}' while setting bean property 'logger'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'com.blah.logging.LoggingProxy@58edf4c8' is defined

这是我的applicationContext.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                           http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-3.1.xsd
                           http://www.springframework.org/schema/tx
                           http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
                           http://www.springframework.org/schema/util
                           http://www.springframework.org/schema/util/spring-util-3.1.xsd">

    <!-- Needed to run @PostConstruct initialization checking methods -->
    <context:annotation-config />

    <!-- Needed for @Transactional annotation -->
    <tx:annotation-driven />

    <!-- Journal Voucher Service -->
    <bean id="journalVoucherService"
class="com.blah.service.impl.JournalVoucherServiceImpl"
        parent="baseService">
    </bean>

    <!-- Base Service -->
    <bean id="baseService" abstract="true"
        class="com.blah.service.impl.BaseServiceDatabaseImpl">
        <property name="dataSource" ref="dataSource" />
        <property name="logger" ref="#{baseAction.logger}" />
    </bean>

    <!-- Loggging Proxy -->
    <bean id="loggingProxy" class="com.blah.logging.LoggingProxy"/>

    <!-- Struts 2 Actions -->
    <bean id="baseAction"
        class="com.blah.action.BaseAction">
        <property name="logger" ref="loggingProxy" />
    </bean>

</beans>

这可能很简单，但对于Spring EL来说是新手。

Answer 1

logger属性需要传递一个值：

<bean id="baseService" abstract="true"
    <class="com.blah.service.impl.BaseServiceDatabaseImpl">
    <property name="dataSource" ref="dataSource" />
    <property name="logger" value="#{baseAction.logger}" />
 </bean>

使用Spring EL时无法解析引用

1 个答案: