aspectj

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I just started playing with AspectJ (1.6.11). I'm sending emails via commons-email libary and I'd like to know how long it takes to send a message. So this is my email sending code: import org.apache.commons.mail.Email; import org.apache.commons.mail.EmailException; import org.apache.commons.mail.SimpleEmail; public class EmailTest { public static void main(String[] args) throws EmailException { Email e = new SimpleEmail(); e.setHostName("localhost"); e.setFrom("foo@localhost"); e.addTo("batto@localhost"); e.setSubject("Test " + System

1.使用Aspectj之前我们需要做一些准备工作,那就是所需要的jar >spring-aop-4.0.6.RELEASE >aspectjrt >aspectjweaver >aoplliance >spring-core 2.配置文件(bean.xml) <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org

I am working with Spring 3.0 framework and still a novice. Can anyone explain me in layman terms what is AOP programming? (a short example will definitely help) How does Spring incorporate/enhance/support it? MeBigFatGuy AOP is a way to modify existing classes in a code base to embellish them or change their behavior based on rules defined separately. This modification can be done before the classes are put into a jar/war, or can happen dynamically while the code is being loaded. The idea is, rather than finding all the points of code that you want to modify in the source code and hand

Aspect Oriented Programming with Spring 1. 简介 AOP是与OOP不同的一种程序结构。在OOP编程中，模块的单位是class（类）；然而，在AOP编程中模块的单位是aspect（切面）。也就是说，OOP关注的是类，而AOP关注的是切面。 Spring AOP是用纯Java实现的。目前，只支持方法执行级别的连接点。 Spring AOP defaults to using standard JDK dynamic proxies for AOP proxies. This enables any interface (or set of interfaces) to be proxied. Spring AOP can also use CGLIB proxies. This is necessary to proxy classes rather than interfaces. CGLIB is used by default if a business object does not implement an interface. As it is good practice to program to interfaces rather than classes; business classes normally will

I have a project that has multiple maven modules, one of which, contains my aspects. How can I take the aspects and weave multiple maven modules? The documentation for the AspectJ Maven plugin is a little sparse and haven't been able to find many examples. I have tried putting the aspectj plugin in the parent pom but it doesn't seem to apply the advice for the modules underneath it. I also tried specifying the aspectsDirectory property but it didn't seem to have any affect. Perhaps I did it wrong? I think the mechanism is explained pretty well on this page: Using Aspect Libraries Basically:

简介 典型的应用场景就是日志，我们需要在某段业务代码的前后做一些日志输出的话，如果我们将日志代码与业务代码混在一起，是非常难以解耦合的。 aop就是应对这种情况产生的技术。 概念 通知 | |切点 ↓ ——*——*——*——程序执行→ ↑ ↑ ↑ 连接点 通知 切面的工作被称为通知。 通知以日志为例，就是想要插入到业务代码的日志程序。 Spring切面的5种类型的通知： 前置通知（Before） 后置通知（After） 返回通知（After-returning） 异常通知（After-throwing） 环绕通知（Around） 在什么时候执行通知。 连接点 连接点是在应用执行过程中能够插入切面的一个点。 这个点就是触发执行通知的时机：如调用方法时，抛出异常时，修改字段时。 切点 一个切面并不需要通知应用的所有连接点，切点有助于缩小切面所通知的连接点的范围。 相对于连接点而言，连接点是所有可以供通知切入的地方，切点就是满足设定条件的连接点。 切面 切面 = 通知 + 切点 引入 向现有类添加新方法或属性。 织入 把切面应用到目标对象，并创建新的代理对象的过程。 在目标对象的生命周期里可织入的点： 编译期 类加载期 运行期 AOP支持 Spring提供的4种类型的AOP支持： 基于代理的经典Spring AOP（过于笨重复杂，直接使用ProxyFactory Bean。）

I've seen that a few instances of this problem have been raised already. However, I am confident that I satisfy the criteria that has been outlined in those solutions. i.e. I'm pretty sure I have the desired jars on my class path + my schemalocation addresses look in order. One solution mentioned that the issue can be caused by having another XML parser on the classpath. I do have dom4j on my classpath but I have removed it to test, and the problem persists. Here's my classpath: <?xml version="1.0" encoding="UTF-8"?> <classpath> <classpathentry kind="src" path="src"/> <classpathentry kind="src

On my project, I currently use AspectJ (not just Spring AOP due to some limitation) with the weaving at the Compile Time. In order to speed up the development on Eclipse, I want to do the weaving at the Load Time. I succeed to do that but with one major constraint: using an interface for my service that contained some transactional methods. If I declare the service with its implementation instead of its interface, in the caller class, there is no weaving and so no transaction supported. So if it is supported by AspectJ, how to configure AspectJ with Load Time Weaving without Interface ? I

I have referred to the AspectJ reference here it states that the 'cflow' is cflow(Pointcut) - every join point in the control flow of each join point P picked out by Pointcut, including P itself This isn't entirely lucid for me and I was wondering if someone could elaborate a little more on the meaning of cflow please? Why use it? Thanks indeed. cflow helps you to advice the whole control flow. Let's try an example, I have 4 small classes public class A { public static void methodA() { B.methodB(); } } public class B { public static void methodB() { C.methodC(); int a = 1; int b = 2; System