java - Spring ProxyFactoryBean注入(inject)问题

Question

我有一个 ProxyFactoryBean bean:

<bean id="sendSingleSmsServiceProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
   <property name="target">
      <ref bean="sendSingleSmsServiceImpl" />
   </property>
   <property name="proxyInterfaces">
      <value>com.test.SendSingleSmsService</value>
   </property>
   <property name="interceptorNames">
      <value>hibernateInterceptor</value>
   </property>
</bean>

我正在尝试将这个 bean 注入(inject)到另一个带有 @Resource 注释的 bean 中，这是我的代码:

@Resource
public ProxyFactoryBean sendSingleSmsServiceProxy;

但我得到这个异常(exception):

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.test.webservice.impl.SendSingleSmsImpl': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'sendSingleSmsServiceProxy' must be of type [org.springframework.aop.framework.ProxyFactoryBean], but was actually of type [$Proxy24]

如有任何帮助，我们将不胜感激。

Answer 1

这是对 ProxyFactoryBean 作用的误解。与 FactoryBean 的所有实现一样，生成的 bean 不是 FactoryBean 的类型，而是工厂生成的任何 bean 的类型 (see Spring docs)

在您的例子中，sendSingleSmsServiceProxy bean 将是 SendSingleSmsService 类型:

@Resource
public SendSingleSmsService sendSingleSmsService;

ProxyFactoryBean 对象实际上是透明的，您所看到的就是它生成的任何内容。