aspect

问题 I am new to AOP . I have created a class in HookShow.java file: public class HookShow { void show(String msg) { System.out.println("In show :"+msg); } public static void main(String[] args) { HookShow cm=new HookShow(); cm.show("called from main method"); } } then i compiled it and added the generated .class file into .jar file using : jar cf HSHOW.jar HookShow.class Now i have a HSHOW.jar. Now i am creating an aspect that has a pointcut which is executed on the call of show() . But i dont

问题 Please see the updates below. I have a Spring Boot application where I accept TCP/IP connections: public MyClass implements InitializingBean { @Override public void afterPropertiesSet() throws Exception { try (ServerSocket serverSocket = new ServerSocket(port)) { while (true) { Socket socket = serverSocket.accept(); new ServerThread(socket).start(); } } } ... private class ServerThread extends Thread { @Override public void run() { try (InputStream input = socket.getInputStream();

问题 C# 7 introduced local functions (which is great!). Suppose I have the following code: using System; using PostSharp.Aspects; namespace AspectCS7 { class Program { private static void Main() { [MyAspect] void LocalFunction() { Console.WriteLine("Hello Aspect!"); } LocalFunction(); } } [Serializable] public class MyAspect : OnMethodBoundaryAspect { public override void OnEntry(MethodExecutionArgs args) { Console.WriteLine("Entering Aspect"); } } } This code shows compile-time errors. Is it

问题 I'm having problems getting my logging aspect to log information when methods from classes of a particular package are accessed. In other words, "no" logging occurs. I even got desperate and added System.out.println statements, with no luck. All of my classes are located under the org.my.package package, i.e. org.my.package.controller , org.my.package.model , etc. Here is my Application class: package org.my.package; import org.springframework.boot.SpringApplication; import org

问题 I currently have a requirement where I need to return null from 100s of methods if a given condition is false. I was thinking of using Java Annotations or Spring Aspects for this so that I don't have to write that if-else block of code everywhere. Any idea as to how we can do this using Java Annotations or Spring Aspects? Any pointers might be helpful. 回答1: If I get you correctly, Spring @Conditional annotation is what you want. You create some public class that implements Spring's Condition

问题 I created an AspectJ aspect which runs fine within a spring application. Now I want to add caching, using springs Cacheable annotation. To check that @Cacheable gets picked up, I'm using the name of a non-existing cache manager. The regular run-time behavior is that an exception is thrown. But in this case, no exception is being thrown, which suggests that the @Cacheable annotation isn't being applied to the intercepting object. /* { package, some more imports... } */ import org.aspectj.lang

问题 I have a DAO that has some methods that make queries to a database using org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate . Few of this methods have certain method arguments and I would like to capture database queries made from these methods. I would like to write an AOP that would capture the SQL queries made from these methods along with the value of the argument. Below is one of the methods(that I need to capture) that makes jdbc query: My DAO- public List<Map<String,

问题 I have been creating a Annotation based aspect definition thus create @LogPerformance and put it on createuser() method. In that case it does not call the aspect method.But when I have moved @LogPerformance from createuser() to create() method aspect method is invoked. Why @LogPerformance does not effect on createuser method. @Component @Path(SystemConstants.REST_REGISTER) public class RegisterServices { @PUT @Path(SystemConstants.REST_REGISTER_CREATE) @Consumes(MediaType.APPLICATION_JSON)

问题 I have added: <mandatory-aspects> <aspect>cm:countable</aspect> </mandatory-aspects> To list definition, so every item should have "increment" field. But when list items are created nothig happened. I have check the follwoing code: nodeService.getAspects(nodeRef) return all defined aspects for item, cm:countable presents in this list. nodeService.getProperty(nodeRef, QName.createQName("http://www.alfresco.org/model/content/1.0", "countable")) return null. nodeService.getProperties(nodeRef)

问题 I am learning Spring and I searched a lot about how to properly use @args() AspectJ designator but I am still not clear completely. What I know about it is that it limits joint-point matches to the execution of methods whose arguments are annoted with the given annotation types. This does not seem to work in my case. So here goes my files: Human.java @Component public class Human { int sleepHours; public int sleep(String sleepHours) { this.sleepHours = Integer.parseInt(sleepHours); System.out