Spring AOP 编程实现-优快云博客

本文链接：https://blog.youkuaiyun.com/dc4125/article/details/84478369

本文介绍了一个使用Spring AOP实现方法拦截的具体示例。通过定义接口ITest及其实现类TestImp，采用NameMatchMethodPointcut匹配特定方法并应用Advice进行增强。此外，还展示了如何通过XML配置文件定义代理和切面。

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package spring.test;

import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.aop.support.NameMatchMethodPointcut;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {

    
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        /*ApplicationContext context = new ClassPathXmlApplicationContext("classpath:/spring/test/applicationContext.xml");
        ITest t = (ITest)context.getBean("testProxy");
        t.getName());*/
        ITest test = new TestImp();
        ProxyFactory proxyFactory = new ProxyFactory(test);
        NameMatchMethodPointcut pc = new NameMatchMethodPointcut();
        pc.setMappedName("getName");
        Advice ad = new Advice();
        DefaultPointcutAdvisor advisor = new DefaultPointcutAdvisor();
        advisor.setAdvice(ad);
        advisor.setPointcut(pc);
        proxyFactory.addAdvisor(advisor);
        ITest testProxy = (ITest)proxyFactory.getProxy();
        testProxy.getName();
    }

}

package spring.test;

public interface ITest {
	
	public String getName();

}

package spring.test;

public class TestImp implements ITest {

	@Override
	public String getName() {
		String name = "ding chao";
		return name;
	}

}

<?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="test" class="spring.test.TestImp"></bean>
  <bean id = "advice" class="spring.test.Advice"></bean>
  <bean id ="pointcut" class="org.springframework.aop.support.NameMatchMethodPointcut">
  	<property name="mappedNames">
  		<list>
  			<value>getName</value>
  		</list>
  	</property>
  </bean>
  <bean id="testProxy" class="org.springframework.aop.framework.ProxyFactoryBean">
  	<property name="targetName">
  		<value>test</value>
  	</property>
  	<property name="interceptorNames">
  		<list>
  			<value>advisor</value>
  		</list>
  	</property>
  </bean>
  <bean id="advisor" class="org.springframework.aop.support.DefaultPointcutAdvisor">
  	<property name="pointcut" ref="pointcut"></property>
  	<property name="advice" ref="advice"></property>
  </bean>
</beans>