Spring Boot - AOP After Throwing Advice

In Spring AOP, After Throwing Advice is used to execute code when a method throws an exception. It is defined using the @AfterThrowing annotation. This advice is helpful for handling errors, logging exceptions, or performing cleanup operations when something goes wrong during method execution.

• @AfterThrowing advice runs only when the target method throws an exception.
• It is commonly used for exception logging and error handling.
• It helps manage errors in a centralized way without modifying business logic.

Syntax:

@Aspect
public class AfterThrowingExample {
@AfterThrowing("execution(* com.xyz.dao.*.*(..))")
public void doRecoveryActions() {
}
}

Steps to Implement After Throwing Advice

Let’s understand the steps required to implement @AfterThrowing advice in Spring AOP, which executes when a target method throws an exception.

Step 1: Create a Spring Boot Project

Open Spring Initializr and provide the following details:

• Group: com.afterthrowing
• Artifact: aop-afterthrowing-example
• Dependencies: Spring Web

Download the project and extract the ZIP file.

Step 2: Add Dependencies in pom.xml

 Step 3: Create DAO Class

Create package com.afterthrowing.dao and add MockDAO.java.

  Step 4: Create Controller Class

Create package com.afterthrowing.controller and add DefaultWebController.java.

Step 5: Create html page

After that, we will add the index.html page under resources.templates package.

We basically access that model attribute that was passed by the DefaultWebController, as a list was passed on, we just iterate over each entry and print it out.

Step 6: Create Aspect Class

Create package com.afterthrowing.aspect and add LoggingAspect.java.

Step 7: Run the Application

Run the project using:

mvn spring-boot:run

Open the browser:

http://localhost:8080/