{"id":21598,"date":"2018-07-18T04:00:29","date_gmt":"2018-07-18T04:00:29","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=21598"},"modified":"2019-01-12T15:53:21","modified_gmt":"2019-01-12T10:23:21","slug":"spring-aop-tutorial","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/spring-aop-tutorial\/","title":{"rendered":"Spring AOP Tutorial – When & Where use Aspect Oriented Programming"},"content":{"rendered":"

1. Objective<\/h2>\n

In our previous tutorial, Spring Annotation Based Configuration<\/strong><\/a>. Here, in this Spring AOP Tutorial, you will see about the Aspect-Oriented Programming Moreover, we will discuss why and where we use Spring Framework AOP. At last, we will cover the Spring AOP Terms, types of Advice, and example.<\/p>\n

So, let’s start the Spring Aspect Oriented Programming Tutorial.<\/p>\n

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2. What is Spring AOP (Aspect Oriented Programming)?<\/h2>\n

Aspect-oriented programming<\/em> (AOP) is one of the major components of the Spring Framework. The Spring\u00a0AOP\u00a0helps in breaking down the logic of the program into several distinct parts called as concerns. Cross-cutting concerns is the functions which span multiple points of an application.<\/p>\n

The cross-cutting concerns help in increasing the modularity and separate it from the business logic of an application. Also, a cross-cutting is a concern that affects the whole application and it should be centralized in one location in code as possible such as authentication, transaction management, logging etc.<\/p>\n

Let’s see what is Spring Bean Definition \u2013 Spring Configuration Metadata<\/a><\/strong><\/p>\n

We can implement Spring Framework AOP in pure Java, it doesn’t require to the special compilation process. It is the best choice for use in a J2EE web container or application server because it doesn’t\u00a0require to\u00a0control the class loader hierarchy.<\/p>\n

a. Need for Spring AOP<\/h3>\n

The Spring AOP provides the pluggable way of dynamically adding the additional concern before, after or around the actual logic.<\/p>\n

Consider there are 10 methods in the class as defined below:<\/p>\n

class\u00a0A{\u00a0\u00a0\r\npublic\u00a0void\u00a0m1(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0m2(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0m3(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0m4(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0m5(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0n1(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0n2(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0p1(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0p2(){...}\u00a0\u00a0\r\npublic\u00a0void\u00a0p3(){...}\u00a0\u00a0\r\n}<\/pre>\n
These are the 5 methods that start from m while 2 methods start from n and 3 methods starting from p.<\/p>\n