aspectj

Conditional behavior of Spring-AOP Before Advice

由 元气小坏坏 提交于 2020-01-15 10:13:03
问题 I'm a little new to AOP, and got confused about the problem I'm facing. I have the Annotation @AuthorizeUser which acts on methods, on Presentation Layer. I need to check if User is authorized to execute that method or not. Here is the code for AuthorizeUserAspect : @Aspect public class AuthorizeUserAspect { @AuthoWired private UserService service; @Before(value = "@annotation(com.company.annotation.AuthorizeUser)") public void isAuthorized(JoinPoint jp) { // Check if the user has permission

Various pointcut expression scopes trigger multiple advice calls unexpectedly

由 匆匆过客 提交于 2020-01-14 14:28:13
问题 Background Logging a project using aspects such that all methods, classes, and constructors that are marked with the @Log annotation have information written to a log file. Problem Methods appear to be called recursively one-level deep, but the code does not show any such recursive relationship. Actual Logged results: 2018-09-25 12:17:29,155 |↷| EmailNotificationServiceBean#createPayload([SECURE]) 2018-09-25 12:17:29,155 |↷| EmailNotificationServiceBean#createPayload([{service.notification

AspectJ: VerifyError

由 a 夏天 提交于 2020-01-14 10:23:33
问题 I'm experimenting with Aspect-Oriented Programming. I've installed the AspectJ-Plugin in Eclipse and followed all the steps mentioned in this tutorial. All connections between the created aspects work, but when I try to run the project, I receive the following exception: HelloException in thread "main" java.lang.VerifyError: Expecting a stackmap frame at branch target 6 in method helloworld.World.<clinit>()V at offset 0 at helloworld.Hello.sayHello(Hello.java:11) at helloworld.Hello.main

AOP pointcut expression for any public method of a service

由 谁说胖子不能爱 提交于 2020-01-14 10:07:27
问题 What is the simplest pointcut expression that would intercept all public methods of all beans annotated with @Service ? For instance, I expect it to affect both public methods of this bean: @Service public MyServiceImpl implements MyService { public String doThis() {...} public int doThat() {...} protected int doThatHelper() {...} // not wrapped } 回答1: This documentation should be extremely helpful. I would do by creating two individual point cuts, one for all public methods, and one for all

AOP pointcut expression for any public method of a service

由 纵然是瞬间 提交于 2020-01-14 10:07:13
问题 What is the simplest pointcut expression that would intercept all public methods of all beans annotated with @Service ? For instance, I expect it to affect both public methods of this bean: @Service public MyServiceImpl implements MyService { public String doThis() {...} public int doThat() {...} protected int doThatHelper() {...} // not wrapped } 回答1: This documentation should be extremely helpful. I would do by creating two individual point cuts, one for all public methods, and one for all

Spring 注解大圈

由 谁都会走 提交于 2020-01-14 09:27:44
@Aspect 在 AspectJ 注解中, 切面只是一个带有 @Aspect 注解的 Java 类，通知是标注有某种注解的简单的 Java 方法。 AspectJ 支持 5 种类型的通知注解: @Before: 前置通知, 在方法执行之前执行 @After: 后置通知, 在方法执行之后执行 @AfterRunning: 返回通知, 在方法返回结果之后执行 @AfterThrowing: 异常通知, 在方法抛出异常之后 @Around: 环绕通知, 围绕着方法执行 来源： https://www.cnblogs.com/binfooo/p/12190293.html

面向切面编程（aop）

由 半腔热情 提交于 2020-01-14 08:53:28
1、AOP的概念： aop采用了横向抽取机制替代了传统地纵向继承体系的重复性代码，不通过过修改源代码可以实现功能的添加 2、AOP的原理： 使用动态代理的方式，创建接口实现类的代理类 注：使员工jdk的动态代理是针对有接口的情况 使用cglib动态代理是针对没有接口的情况，创建某个类子类的代理类 3.AOP的相关术语： 1）JointPoint（连接点）：那些被拦截到的点，主要指方法，因为spring框架中只支持方法类型的连接点，也就是类里面可以被增强的方法 2）PointCut(切入点)：对哪些需要拦截的JointPoint的定义，实际就是类里面实际被增强的方法 3）Advice（通知\增强）：对拦截到的JointPoint所做的事叫做通知，通知分为前置通知，后置通知，环绕通知，异常通知，最终通知（切面需要完成的功能），就是实际添加的功能的逻辑 前置通知：方法之前执行 后置通知：方法之后执行 环绕通知：方法之前之后执行 异常通知：方法异常执行 最终通知：后置之后执行 4）Aspect（切面）：通知与切入点的结合，把增强具体应用到切入点的过程 5）Introduction(引介):在不修改代码的前提下，在运行期间动态的向类中添加一些属性或者方法 6）Target（目标对象）：代理的目标对象（要增强的类） 7）Weaving（织入）

Can aspectj add methods to java.lang.String

由 早过忘川 提交于 2020-01-14 08:45:09
问题 I've read some articles of aspectj, I know it can enhance classes, which is attractive. I've a very stupid question that I can't find a clear answer: Can aspectj add methods to java.lang.String? Or similar question: If I can't get the sources of some classes, can I enhance them by aspectj? 回答1: No, you can't do this my friend. I think this is what you are looking for Type not exposed to user For further details please take a look at The AspectJ Development Environment Guide #Special Cases As

IntelliJ IDEA + AspectJ

由 元气小坏坏 提交于 2020-01-14 08:01:16
问题 I am trying to use AspectJ in sample project in IntelliJ IDEA. I have an experience with Spring AOP, but this is first time I am using AspectJ, and cannot make it work. I am trying to do as described here: https://www.jetbrains.com/help/idea/2017.1/aspectj.html My build.gradle: apply plugin: 'java' repositories { mavenCentral() } dependencies { compile "org.projectlombok:lombok:+" compile "org.aspectj:aspectjrt:+" compile "org.aspectj:aspectjweaver:+" compile "org.aspectj:aspectjtools:+" }

IntelliJ IDEA + AspectJ

由 梦想与她 提交于 2020-01-14 08:01:10
问题 I am trying to use AspectJ in sample project in IntelliJ IDEA. I have an experience with Spring AOP, but this is first time I am using AspectJ, and cannot make it work. I am trying to do as described here: https://www.jetbrains.com/help/idea/2017.1/aspectj.html My build.gradle: apply plugin: 'java' repositories { mavenCentral() } dependencies { compile "org.projectlombok:lombok:+" compile "org.aspectj:aspectjrt:+" compile "org.aspectj:aspectjweaver:+" compile "org.aspectj:aspectjtools:+" }
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