如何解决“FactoryBean在创建对象时抛出异常”

Question

我在春季的aop上通过“JointPoints”试验“beforeAdvice”。这很简单，我打电话给目标方法。在执行目标类方法之前，应执行before（）方法。

ClientApp：

import org.springframework.context.ApplicationContext; 
import org.springframework.context.support.FileSystemXmlApplicationContext; 

import com.nt.services.LoanApprover; 

public class ClientApp { 
public static void main(String[] args) { 
//activate ioc container 
ApplicationContext context = new FileSystemXmlApplicationContext("src/com/nt/cfgs/applicationContext.xml"); 
//get bean 
LoanApprover approver = context.getBean("pfb",LoanApprover.class); 
//call b.method 
approver.approver(); 
} 
} 

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" 
xsi:schemaLocation=" 
http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-4.0.xsd"> 
<bean id="auditAdvice" class="com.nt.aspect.MyBeforeAdvice" /> 
<bean id="target" class="com.nt.services.LoanApprover" /> 
<bean id="pfb" class=" 
    org.springframework.aop.framework.ProxyFactoryBean "> 
    <property name="target" ref="target" /> 
    <property name="interceptorNames"> 
     <list> 
      <value> 
       auditAdvice 
      </value> 
     </list> 
    </property> 
</bean> 
</beans> 

MyBeforeAdvice.java

import java.lang.reflect.Method; 
import org.springframework.aop.MethodBeforeAdvice; 
public class MyBeforeAdvice implements MethodBeforeAdvice{ 
@Override 
public void before(Method method, Object[] args, Object target) 
     throws Throwable { 
    System.out.println("I am in MyBeforeAdvice class"); 
} 
} 

LoanApprover.java

public class LoanApprover { 
public void approver(){ 
    System.out.println("I am in LoanApprover method"); 
} 
} 

当我运行这个应用程序，我得到这个异常。

Aug 13, 2015 12:16:04 PM  org.springframework.context.support.AbstractApplicationContext prepareRefresh 
INFO: Refreshing  org.springframework.context.support.FileSystemXmlApplicationContext@7c6cd67b:  startup date [Thu Aug 13 12:16:04 IST 2015]; root of context hierarchy 
Aug 13, 2015 12:16:04 PM  org.springframework.beans.factory.xml.XmlBeanDefinitionReader  loadBeanDefinitions 
INFO: Loading XML bean definitions from file  [G:\java\Frameworks\SpringAOP\AOPProj3(Before  Advice)\src\com\nt\cfgs\applicationContext.xml] 
Exception in thread "main"  org.springframework.beans.factory.BeanCreationException: Error creating bean  with name 'pfb': FactoryBean threw exception on object creation; nested  exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No  bean named ' 
        auditAdvice 
      ' is defined 
at  org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObject  FromFactoryBean(FactoryBeanRegistrySupport.java:175) 
at  org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFr omFactoryBean(FactoryBeanRegistrySupport.java:103) 
at  org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanIn stance(AbstractBeanFactory.java:1517) 
    at  org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(Abstract BeanFactory.java:251) 
at  org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBe anFactory.java:199) 
at  org.springframework.context.support.AbstractApplicationContext.getBean(AbstractA pplicationContext.java:962) 
at test.ClientApp.main(ClientApp.java:13) 
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named ' 
       auditAdvice 
      ' is defined 
at  org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefi nition(DefaultListableBeanFactory.java:694) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBean Definition(AbstractBeanFactory.java:1168) 
at  org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(Abstract BeanFactory.java:281) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBe anFactory.java:194) 
at org.springframework.aop.framework.ProxyFactoryBean.initializeAdvisorChain(ProxyF actoryBean.java:460) 
at org.springframework.aop.framework.ProxyFactoryBean.getObject(ProxyFactoryBean.ja va:244) 
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObject FromFactoryBean(FactoryBeanRegistrySupport.java:168) 
... 6 more 

请有人告诉我为什么我得到这个异常？

Answer 1

<value> 
    auditAdvice 
</value> 

到

<value>auditAdvice</value> 

好像春天在这里使用空格和换行符号ID只需改变。 有关该主题的更多信息，请访问here。 希望有所帮助。