Java Scala Spring IoC和JSF

我有一个弹簧注射prolbem，我已经尝试解决了4天，但没有取得任何进展：

在我的spring配置中，我有：

<bean id="applicationCache" class="domain.ui.ApplicationCacheServiceImpl">
    <property name="divisionSelectOptionsCache" ref="divisionSelectOptionsCache"/>
</bean>

<bean id="divisionSelectOptionsCache" class="domain.jsf.DivisionSelectOptionsCache"></bean>

divisionSelectOptions缓存.scala如下所示：

class ApplicationCacheServiceImpl extends ApplicationCacheService{
   var divisionSelectOptionsCache: DivisionSelectOptionsCache = _

   def setDivisionSelectOptionsCache(dsoc: DivisionSelectOptionsCache) ={
     divisionSelectOptionsCache = dsoc
   }
 ....

class DivisionSelectOptionsCache extends Converter{
   val options = mutable.Map[String, DivisionSelectOption]()
   var em: EntityManager = _

   // Just left this in case its  relevant. Throws no errors though
   @PersistenceContext
   def setEntityManager(entManager: EntityManager) = {
      em = entManager
   }
   ....

应用程序编译并生成war。但是，当我部署它时，会收到以下异常消息：

INFO: Initializing Spring root WebApplicationContext
Jan 18, 2013 7:56:17 PM org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'applicationCache' defined in class path resource 
applicationPersistence.xml]: Initialization of bean failed; nested exception is org.springframework.beans.ConversionNotSupportedException: 
Failed to convert property value of type '$Proxy15 implementing javax.faces.convert.Converter,org.springframework.aop.SpringProxy,
org.springframework.aop.framework.Advised' to required type 'com.domain.jsf.DivisionSelectOptionsCache' 
for property 'divisionSelectOptionsCache'; nested exception is java.lang.IllegalStateException: 
Cannot convert value of type [$Proxy15 implementing javax.faces.convert.Converter,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised]
 to required type [com.domain.jsf.DivisionSelectOptionsCache] for property 'divisionSelectOptionsCache': no matching editors or conversion strategy found
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
  at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
  at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
  at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
 .....
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type '$Proxy15 implementing javax.faces.convert.Converter,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised' to required type 'com.domain.jsf.DivisionSelectOptionsCache' for property 'divisionSelectOptionsCache'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [$Proxy15 implementing javax.faces.convert.Converter,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised] to required type [com.domain.jsf.DivisionSelectOptionsCache] for property 'divisionSelectOptionsCache': no matching editors or conversion strategy found
  at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:485)
  at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:516)
....
Caused by: java.lang.IllegalStateException: Cannot convert value of type [$Proxy15 implementing javax.faces.convert.Converter,org.springframework.aop.SpringProxy,org.springframework.aop.framework.Advised] to required type [com.domain.jsf.DivisionSelectOptionsCache] for property 'divisionSelectOptionsCache': no matching editors or conversion strategy found
  at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:247)
  at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:470)
  ... 31 more

Jan 18, 2013 7:56:20 PM org.apache.catalina.core.StandardContext filterStop
FINE: Stopping filters

所以：

ApplicationCacheServiceImpl

正在寻找spring注入属性

DivisionSelectOptions缓存

对应于

DivisionSelectOptions缓存

的类型这是正确的，如spring配置xml文件中所定义

Class

division选择选项缓存

扩展

转换器

，因此应该不会出现问题

所以我被卡住了。我甚至尝试过使用SpringIOC，并使用GoogleGuice进行编译时检查，而不是部署时检查（没有xml配置文件），但这不起作用，因为应用程序依赖spring提供托管JSFbean

请帮忙，因为我马上就要告诉客户这是不可能的

---

谢谢

使用类似于的反编译器来检查Scala编译器生成的字节码。这很可能是因为它没有按照你想的那样做。

从你问这个问题开始，时间过得太久了，但我会回答的，也许这是其他人的问题

当Spring使用JDK代理时会出现此问题。正如在

JDK proxy

中一样，所有类都应该有“Interface”，而您的

divisionselectoptioncache

类没有实现任何接口，那么就存在这样的问题， 有两种解决方案：

• 实现所有类的接口

• 使用

  CGLIB

  代理

为了使用

CGLib

代理，您应该在lib文件夹中添加lib并使用

<aop:aspectj-autoproxy proxy-target-class="true"/>

---

在

应用程序上下文中

。

proxy-target类的默认值是
false
，这就是
JDK-proxy
只是一个小提示：您不必自己编写Java风格的getter和setter。您只需编写，例如
@BeanProperty var divisionselectoptions缓存：divisionselectoptions缓存=\uu
通过谷歌搜索错误消息会得到非常相关的结果，例如，尝试spring scala api