$.LogAspect.java Source code

Introduction

Here is the source code for $.LogAspect.java

Source

    #set($symbol_pound='#')#set($symbol_dollar='$')#set($symbol_escape='\')
/*******************************************************************************
 * Copyright (c) 2005, 2014 springside.github.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *******************************************************************************/
package ${package}.aop;

    import org.aspectj.lang.JoinPoint;
    import org.aspectj.lang.ProceedingJoinPoint;
    import org.aspectj.lang.annotation.After;
    import org.aspectj.lang.annotation.AfterReturning;
    import org.aspectj.lang.annotation.AfterThrowing;
    import org.aspectj.lang.annotation.Around;
    import org.aspectj.lang.annotation.Aspect;
    import org.aspectj.lang.annotation.Before;
    import org.aspectj.lang.annotation.Pointcut;
    import org.springframework.context.annotation.EnableAspectJAutoProxy;
    import org.springframework.stereotype.Component;

    /**
     * ?
     * 
     * ?
     * 
     * @author liuy
     *
     */
    @Aspect
    @Component
    //@EnableAspectJAutoProxy
    public class LogAspect {

        /**
         * ??
         * 
         *    ?com.fycoder.ll.web?????
         */
        @Pointcut("execution(* ${package}.web..*(..))")
        //@Pointcut("execution(public * * (..))")
        public void pointcutExpression() {

        }

        /**
         * 1 ?
         * @param joinPoint
         */
        @Before("pointcutExpression()")
        public void beforeMethod(JoinPoint joinPoint) {
            System.out.println("?");
        }

        /**
         * 2 ?
         */
        @After("pointcutExpression()") // ??. ?
        public void afterMethod(JoinPoint joinPoint) {
            System.out.println("?");
        }

        /**
         * 3 
         * 
         * ???
         * ?!
         * 
         * @param joinPoint
         * @param returnValue
         * 
         */
        @AfterReturning(value = "pointcutExpression()", returning = "returnValue")
        public void afterRunningMethod(JoinPoint joinPoint, Object returnValue) {
            System.out.println("" + returnValue);
        }

        /**
         * 4 
         * 
         * ?.
         * ?; ??
         * 
         * @param joinPoint
         * @param e
         */
        @AfterThrowing(value = "pointcutExpression()", throwing = "e")
        public void afterThrowingMethod(JoinPoint joinPoint, Exception e) {
            System.out.println(",  " + e);
        }

        /**
         * ?? ProceedingJoinPoint ?. 
         * ??: ProceedingJoinPoint ???.
         * , ?
         */

        @Around("pointcutExpression()")
        public Object aroundMethod(ProceedingJoinPoint pjd) {

            Object result = null;
            String methodName = pjd.getSignature().getName();

            try {
                //?
                System.out.println("The method " + methodName + " begins with " + Arrays.asList(pjd.getArgs()));
                //
                result = pjd.proceed();
                //
                System.out.println("The method " + methodName + " ends with " + result);
            } catch (Throwable e) {
                //
                System.out.println("The method " + methodName + " occurs exception:" + e);
                throw new RuntimeException(e);
            }
            //?
            System.out.println("The method " + methodName + " ends");

            return result;
        }

    }