AOP切面编程& 埋点 将用户行为存储到数据库或者发送到kafka进行spark处理

一、基于注解的Spring AOP的配置和使用

package cn.aop.service;

public class UserService {
	private final static Log log = LogFactory.getLog(UserService.class);
	
	public User get(long id){
		if(log.isInfoEnabled()){
			log.info("getUser method . . .");
		}
		return new User();
	}
     …………
}

package cn.aop.aspect;
 /**
 * 系统服务组件Aspect切面Bean 
 */
//声明这是一个组件
@Component
//声明这是一个切面Bean
@Aspect
public class ServiceAspect {

	private final static Log log = LogFactory.getLog(ServiceAspect.class);
	public static final String EDP = ""execution(* cn.aop.service..*(..))"";

	//配置切入点,该方法无方法体,主要为方便同类中其他方法使用此处配置的切入点
	@Pointcut("execution(* cn.aop.service..*(..))")
	public void aspect(){	}
	
	/*
	 * 配置前置通知,使用在方法aspect()上注册的切入点
	 * 同时接受JoinPoint切入点对象,可以没有该参数
	 */
	@Before("aspect()")
	public void before(JoinPoint joinPoint){
		if(log.isInfoEnabled()){
			log.info("before " + joinPoint);
		}
	}

	@After("execution(* com.service.impl.UserService.*(..))")
    public void afterEat() {
        System.out.println("----------afterEat------后置增强------------------");
    }


    @After(value = EDP)  //也可以用这种方式
	public void after(JoinPoint joinPoint){
		if(log.isInfoEnabled()){
			log.info("after " + joinPoint);
            System.out.println("访问埋点菜单后,往数据库插入一条记录");
		}
	}
	
	//配置环绕通知,使用在方法aspect()上注册的切入点
	@Around("aspect()")
	public void around(JoinPoint joinPoint){
		long start = System.currentTimeMillis();
		try {
			((ProceedingJoinPoint) joinPoint).proceed();
			long end = System.currentTimeMillis();
			if(log.isInfoEnabled()){
				log.info("around " + joinPoint + "\tUse time : " + (end - start) + " ms!");
			}
		} catch (Throwable e) {
			long end = System.currentTimeMillis();
			if(log.isInfoEnabled()){
				log.info("around " + joinPoint + "\tUse time : " + (end - start) + " ms with exception : " + e.getMessage());
			}
		}
	}
	
	//配置后置返回通知,使用在方法aspect()上注册的切入点
	@AfterReturning("aspect()")
	public void afterReturn(JoinPoint joinPoint){
		if(log.isInfoEnabled()){
			log.info("afterReturn " + joinPoint);
		}
	}
	
	//配置抛出异常后通知,使用在方法aspect()上注册的切入点
	@AfterThrowing(pointcut="aspect()", throwing="ex")
	public void afterThrow(JoinPoint joinPoint, Exception ex){
		if(log.isInfoEnabled()){
			log.info("afterThrow " + joinPoint + "\t" + ex.getMessage());
		}
	}
	
}

 

测试代码：

package cn.ysh.studio.spring.aop;  

/**
 * Spring AOP测试
 * @author Shenghany
 * @date 2013-5-28
 */
public class Tester {

	private final static Log log = LogFactory.getLog(Tester.class);
	
	public static void main(String[] args) {
		//启动Spring容器
		ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
		//获取service组件
		UserService service = (UserService) context.getBean("userService");
		//以普通的方式调用UserService对象的三个方法
		User user = service.get(1L);
		service.save(user);
		try {
			service.delete(1L);
		} catch (Exception e) {
			if(log.isWarnEnabled()){
				log.warn("Delete user : " + e.getMessage());
			}
		}
	}
}

控制台输出如下：

 INFO [spring.aop.aspect.ServiceAspect:40] before execution(User cn.ysh.studio.spring.aop.service.UserService.get(long))
 INFO [spring.aop.service.UserService:19] getUser method . . .
 INFO [spring.aop.aspect.ServiceAspect:60] around execution(User cn.ysh.studio.spring.aop.service.UserService.get(long))	Use time : 42 ms!
 INFO [spring.aop.aspect.ServiceAspect:48] after execution(User cn.ysh.studio.spring.aop.service.UserService.get(long))
 INFO [spring.aop.aspect.ServiceAspect:74] afterReturn execution(User cn.ysh.studio.spring.aop.service.UserService.get(long))
 INFO [spring.aop.aspect.ServiceAspect:40] before execution(void cn.ysh.studio.spring.aop.service.UserService.save(User))
 INFO [spring.aop.service.UserService:26] saveUser method . . .
 INFO [spring.aop.aspect.ServiceAspect:60] around execution(void cn.ysh.studio.spring.aop.service.UserService.save(User))	Use time : 2 ms!
 INFO [spring.aop.aspect.ServiceAspect:48] after execution(void cn.ysh.studio.spring.aop.service.UserService.save(User))
 INFO [spring.aop.aspect.ServiceAspect:74] afterReturn execution(void cn.ysh.studio.spring.aop.service.UserService.save(User))
 INFO [spring.aop.aspect.ServiceAspect:40] before execution(boolean cn.ysh.studio.spring.aop.service.UserService.delete(long))
 INFO [spring.aop.service.UserService:32] delete method . . .
 INFO [spring.aop.aspect.ServiceAspect:65] around execution(boolean cn.ysh.studio.spring.aop.service.UserService.delete(long))	Use time : 5 ms with exception : spring aop ThrowAdvice演示
 INFO [spring.aop.aspect.ServiceAspect:48] after execution(boolean cn.ysh.studio.spring.aop.service.UserService.delete(long))
 INFO [spring.aop.aspect.ServiceAspect:74] afterReturn execution(boolean cn.ysh.studio.spring.aop.service.UserService.delete(long))
 WARN [studio.spring.aop.Tester:32] Delete user : Null return value from advice does not match primitive return type for: public boolean cn.ysh.studio.spring.aop.service.UserService.delete(long) throws java.lang.Exception

二、基于用配置文件的方式的Spring AOP的配置和使用

package com.ssm.aop;
public class LoggingAspect {
    // 声明该方法为一个前置通知：在目标方法开始之前执行
    public void beforeMethod(JoinPoint joinpoint) {
        String methodName = joinpoint.getSignature().getName();
        List