aspectj | 易学教程

Spring + AspectJ weaving for java 8 using aspectj-maven-plugin

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问题 I'm migrating my project from java 7 to java 8 and the problem I have is related to aspectj weaving using aspectj-maven-plugin . I could configure successfuly the weaving using this plugin running on Java 6 and 7 according to Haus documentation. But the problem is that I haven't found any way to use (and find) plugin version 7 that supports java 8. I saw here that plugin 7 adds java 8 support but couldn't find a way to use it. This is the configuration plugin I need: <plugin> <groupId>org

Using Instrumentation to record unhandled exception

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问题 I was trying to debug java application using instrumentation. The problem with current system are Hardly written any log statements Poor exception handling This made very difficult to trace root cause of broken functionality. To handle the situation I have developed tool,java agent using Instrumentation API , and I was able to inject log statements and half of the problem solved. But the next problem is to recording the Exception. I want to extend my tool record every exception thrown during

Spring autowiring using @Configurable

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I'm playing with the idea of using Spring @Configurable and @Autowire to inject DAOs into domain objects so that they do not need direct knowledge of the persistence layer. I'm trying to follow http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/aop.html#aop-atconfigurable , but my code seems to have no effect. Basically, I have: @Configurable public class Artist { @Autowired private ArtistDAO artistDao; public void setArtistDao(ArtistDAO artistDao) { this.artistDao = artistDao; } public void save() { artistDao.save(this); } } And: public interface ArtistDAO {

Spring AOP pointcut that matches annotation on interface

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问题 I have a service class implemented in Java 6 / Spring 3 that needs an annotation to restrict access by role. I have defined an annotation called RequiredPermission that has as its value attribute one or more values from an enum called OperationType: public @interface RequiredPermission { /** * One or more {@link OperationType}s that map to the permissions required * to execute this method. * * @return */ OperationType[] value();} public enum OperationType { TYPE1, TYPE2; } package com

AspectJ使用实例

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一、在 Spring 中启用 AspectJ 注解支持 1要在 Spring 应用中使用 AspectJ 注解, 必须在 classpath 下包含 AspectJ 类库: aopalliance.jar、aspectj.weaver.jar 和 spring-aspects.jar maven 引入 <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>4.1.9.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>4.1.9.RELEASE</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.6.8</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId

SpringAOP在一个实现类中定义自身的方法, 无法调用, 只能调用实现接口的方法

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由于注册了AOP, 给这个实现类调用了通知, 由于是增强, 怀疑spring用的是jdk的代理, 然后把 , 发现可以调用实现类自身的方法了, 这里设置下aop为cglib代理解决了 <aop:aspectj-autoproxy expose-proxy="true" proxy-target-class="true"> </aop:aspectj-autoproxy> 来源： https://blog.csdn.net/qq_41790324/article/details/98857342

Spring AOP vs AspectJ

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I am under the impression that Spring AOP is best used for application specific tasks such as security, logging, transactions, etc. as it uses custom Java5 annotations as a framework. However, AspectJ seems to be more friendly design-patterns wise. Can anyone highlight the various pros and cons of using Spring AOP vs AspectJ in a Spring application? Whiteship Spring-AOP Pros It is simpler to use than AspectJ, since you don't have to use LTW ( load-time weaving ) or the AspectJ compiler. It uses the Proxy pattern and the Decorator pattern Spring-AOP Cons This is proxy-based AOP, so basically

Spring autowired bean for @Aspect aspect is null

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问题 I have the following spring configuration: <context:component-scan base-package=\"uk.co.mysite.googlecontactsync.aop\"/> <bean name=\"simpleEmailSender\" class=\"uk.co.mysite.util.email.simple.SimpleEmailSenderImplementation\"/> <aop:aspectj-autoproxy/> Then I have an aspect: @Aspect public class SyncLoggingAspect { @Autowired private SimpleEmailSender simpleEmailSender @AfterReturning(value=\"execution(* uk.co.mysite.datasync.polling.Poller+.doPoll())\", returning=\"pusher\") public void

Spring: Standard Logging aspect (interceptor)

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问题 I\'ve found a lot of examples on how to create a custom aspect for logging using the Spring framework like this or this but did not find standard/common Spring implementation for this situation and question. Are there any standard implementations of logging aspect from Spring or not? 回答1: Yes there are! <bean id="customizableTraceInterceptor" class="org.springframework.aop.interceptor.CustomizableTraceInterceptor"> <property name="enterMessage" value="Entering $[methodName]($[arguments])"/>

Use of proxies in Spring AOP

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问题 I am reading a book, which talks about enabling AspectJ support in Spring AOP. Given below is a paragraph taken from the book: To enable AspectJ annotation support in the Spring IoC container, you only have to define an empty XML element aop:aspectj-autoproxy in your bean configuration file. Then, Spring will automatically create proxies for any of your beans that are matched by your AspectJ aspects. For cases in which interfaces are not available or not used in an application’s design, it’s