J2EE中使用Spring AOP框架和EJB组件(4)

＜bean id="yahooFeed" class="org.javatx.spring.aop.YahooFeed"/＞ 
＜bean id="foreignTradeAdvisor"  
class="org.springframework.aop.support.NameMatchMethodPointcutAdvisor"＞ 
＜property name="mappedName" value="getPrice"/＞ 
＜property name="advice"＞ 
＜bean class="org.javatx.spring.aop.ForeignTradeAdvice"＞ 
＜constructor-arg index="0" ref="yahooFeed"/＞ 
＜/bean＞ 
＜/property＞ 
＜/bean＞ 

public class ForeignTradeAdvice implements MethodInterceptor { 
private TradeManager tradeManager;    
public ForeignTradeAdvice(TradeManager manager) { 
this.tradeManager = manager; 
}    
public Object invoke(MethodInvocation invocation) throws Throwable { 
Object res = invocation.proceed(); 
if(res!=null) return res; 
Object[] args = invocation.getArguments(); 
String symbol = (String) args[0]; 
return tradeManager.getPrice(symbol); 
} 
} 

＜bean id="baseTradeManager" class="org.javatx.spring.aop.TradeDao"＞ 
... same as tradeManager definition in the above example 
＜/bean＞ 
＜bean id="tradeManager" 
class="org.springframework.aop.framework.ProxyFactoryBean"＞ 
＜property name="proxyInterfaces" value="org.javatx.spring.aop.TradeManager"/＞ 
＜property name="target" ref="baseTradeManager"/＞ 
＜property name="interceptorNames"＞ 
＜list＞ 
＜idref local="foreignTradeAdvisor"/＞ 
＜/list＞ 
＜/property＞ 
＜/bean＞ 

public class StubPostProcessor implements BeanPostProcessor { 
private final Map stubs; 
public StubPostProcessor( Map stubs) { 
this.stubs = stubs; 
} 
public Object postProcessBeforeInitialization(Object bean, String beanName) { 
if(stubs.containsKey(beanName)) return stubs.get(beanName); 
return bean; 
} 
public Object postProcessAfterInitialization(Object bean, String beanName) { 
return bean; 
} 
}