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提到代理，我们可以使用ProxyBeanFactory，并配置proxyInterfaces,target和interceptorNames实现，但如果需要代理的bean很多，无疑会对spring配置文件的编写带来繁重的工作
Spring为我们提供了，根据beanName匹配后进行自动代理的解决方法
业务接口
package AutoProxyOne;
public interface Shopping {
public String buySomething(String type); public String buyAnything(String type); public String sellSomething(String type); public String sellAnything(String type);
}业务实现类A，作为配置文件中的buyBean：
package AutoProxyOne;public class ShoppingImplA implements Shopping { private Customer customer;
public Customer getCustomer() { return customer;
} public void setCustomer(Customer customer) { this.customer = customer; } public String buySomething(String type) { System.out.println(this.getCustomer().getName()+" bye "+type+" success"); return null; } public String buyAnything(String type) { System.out.println(this.getCustomer().getName()+" bye "+type+" success"); return null; } public String sellAnything(String type) { System.out.println(this.getCustomer().getName()+" sell "+type+" success"); return null; } public String sellSomething(String type) { System.out.println(this.getCustomer().getName()+" sell "+type+" success"); return null; }}
业务实现类B，作为配置文件中的sellBean：
package AutoProxyOne;public class ShoppingImplB implements Shopping { private Customer customer; public Customer getCustomer() { return customer; } public void setCustomer(Customer customer) { this.customer = customer; } public String buySomething(String type) { System.out.println(this.getCustomer().getName()+" bye "+type+" success"); return null; } public String buyAnything(String type) { System.out.println(this.getCustomer().getName()+" bye "+type+" success"); return null; } public String sellAnything(String type) { System.out.println(this.getCustomer().getName()+" sell "+type+" success"); return null; } public String sellSomething(String type) { System.out.println(this.getCustomer().getName()+" sell "+type+" success"); return null; }}
切面通知：
package AutoProxyOne;import java.lang.reflect.Method;import org.springframework.aop.MethodBeforeAdvice;//前置通知public class WelcomeAdvice implements MethodBeforeAdvice { public void before(Method method, Object[] args, Object obj) throws Throwable { System.out.println("Hello welcome to bye "); }}
配置文件：
其中beanNames为buy*,意味着所有以buy开头的bean,都被spring容易自动代理，执行相应的切面通知
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd" ><beans> <bean id="WelcomeAdvice" class="AutoProxyOne.WelcomeAdvice"> </bean> <bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator"> <property name="beanNames"> <list> <value>buy*</value> </list> </property> <property name="interceptorNames"> <list> <value>WelcomeAdvice</value> </list> </property> </bean> <bean id="buyBean" class="AutoProxyOne.ShoppingImplA"> <property name="customer"> <ref bean="customer"/> </property> </bean> <bean id="sellBean" class="AutoProxyOne.ShoppingImplB"> <property name="customer"> <ref bean="customer"/> </property> </bean><bean id="customer" class="AutoProxyOne.Customer"> <constructor-arg index="0"> <value>gaoxiang</value> </constructor-arg> <constructor-arg index="1"> <value>26</value> </constructor-arg> </bean></beans>
测试代码：
在测试代码中，我们的buyBean打印两条买的信息，sellBean打印两条卖的信息，可以看到buyBean执行的方法已经进行了切面处理
需要注意的是，如果使用自动代码，则获得Spring Bean工厂要用
ApplicationContext ctx=new FileSystemXmlApplicationContext(filePath);
而不能用
BeanFactory factory=new XmlBeanFactory(new FileSystemResource(filePath));
原因我想是因为BeanFactory在初始化时并不实例化单例的Bean,而ApplicationContext则在初始化时候全部实例化了Bean,自动代理需要在初始化时候定义好代理关系
package AutoProxyOne;import java.io.File;import org.springframework.beans.factory.BeanFactory;import org.springframework.beans.factory.xml.XmlBeanFactory;import org.springframework.context.ApplicationContext;import org.springframework.context.support.FileSystemXmlApplicationContext;import org.springframework.core.io.FileSystemResource;import org.springframework.aop.support.RegexpMethodPointcutAdvisor;public class TestAdvisor { public static void main(String[] args) { String filePath=System.getProperty("user.dir")+File.separator+"AutoProxyOne"+File.separator+"hello.xml"; BeanFactory factory=new XmlBeanFactory(new FileSystemResource(filePath)); ApplicationContext ctx=new FileSystemXmlA使用BeanNameAutoProxyCreator实现spring的自动代理
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原文地址：http://www.cnblogs.com/langtianya/p/5138125.html
