{"id":24939,"date":"2015-08-03T23:56:58","date_gmt":"2015-08-03T18:26:58","guid":{"rendered":"http:\/\/www.tothenew.com\/blog\/?p=24939"},"modified":"2015-08-04T09:46:22","modified_gmt":"2015-08-04T04:16:22","slug":"integrating-spring-aop-with-aem","status":"publish","type":"post","link":"https:\/\/www.tothenew.com\/blog\/integrating-spring-aop-with-aem\/","title":{"rendered":"Integrating Spring AOP with AEM"},"content":{"rendered":"

Spring AOP<\/strong><\/p>\n

Spring AOP (Aspect-oriented programming) framework is used to modularize cross-cutting concerns in aspects.Some of cases where we can use it are to control some of common things like logging , adding some extra feature without actually touching the core logic.<\/p>\n

This blog post will explain how to enable aspects in our AEM projects<\/a> using aspectj-maven-plugin.
\nBelow are the steps for various configuration we need to make.<\/p>\n

Configuration at pom level<\/strong><\/p>\n

In plugin section add following lines of code<\/p>\n

[xml]<\/p>\n

<plugin>
\n <groupId>org.codehaus.mojo<\/groupId>
\n <artifactId>aspectj-maven-plugin<\/artifactId>
\n <version>1.3<\/version>
\n <configuration>
\n <complianceLevel>1.7<\/complianceLevel>
\n <\/configuration>
\n <executions>
\n <execution>
\n <goals>
\n <goal>compile<\/goal>
\n <\/goals>
\n <\/execution>
\n <\/executions>
\n<\/plugin><\/p>\n

[\/xml]<\/p>\n

In dependency section add<\/p>\n

[xml]<\/p>\n

<dependencies>
\n <dependency>
\n\t\t\t<groupId>org.aspectj<\/groupId>
\n\t\t\t<artifactId>aspectjrt<\/artifactId>
\n\t\t\t<version>1.6.7<\/version>
\n\t\t\t<scope>compile<\/scope>
\n <\/dependency>
\n <!– Day CQ5 WCM Dependencies –>
\n <!– Apache Sling Dependencies –>
\n <!– Apache Jackrabbit\/JCR Dependencies –>
\n<\/dependencies><\/p>\n

[\/xml]<\/p>\n

The Aspect class need to placed under folder src\/main\/aspect.
\nsample project structure<\/em><\/p>\n

\"Capture\"<\/p>\n

Below is the sample class which is used to log messages whenever the execution of method starts and end for all java classes methods that are inside the package com.ig<\/p>\n

[java]
\npackage com.ig.aspects;<\/p>\n

import org.aspectj.lang.JoinPoint;
\nimport org.aspectj.lang.annotation.After;
\nimport org.aspectj.lang.annotation.Aspect;
\nimport org.aspectj.lang.annotation.Before;
\nimport org.aspectj.lang.annotation.Pointcut;
\nimport org.slf4j.Logger;
\nimport org.slf4j.LoggerFactory;<\/p>\n

@Aspect
\npublic class LoggerAspect {<\/p>\n

\t@Pointcut(value = "execution(public * com.ig.core.*.*(..))")
\n\tpublic void anyMethod() {
\n\t}<\/p>\n

\t@Before(value = "anyMethod()")
\n\tpublic void logEntry(JoinPoint joinPoint) {
\n\t\tLogger logger = LoggerFactory.getLogger(joinPoint.getTarget().getClass());
\n\t\tlogger.info("Method Started…."+joinPoint.getSignature().getName()+"()");
\n\t}<\/p>\n

\t@After(value = "anyMethod()")
\n\tpublic void logExit(JoinPoint joinPoint) {
\n\t\tLogger logger = LoggerFactory.getLogger(joinPoint.getTarget().getClass());
\n\t\tlogger.info(" Method Exited…"+joinPoint.getSignature().getName()+"()");
\n\t}
\n}<\/p>\n

[\/java]<\/p>\n

execution(public * com.ig.core.*.*(..))<\/em><\/strong> : the execution of any method defined in the core<\/strong> package or a sub-package
\n@Before <\/em><\/strong>Before advice It will execute before the method execution
\n@After<\/em><\/strong> After returning advice tt will execute after the method is returned a result.<\/p>\n

Refer Spring\u2019s AOP documentation for Joint Point, Advice, Pointcuts, etc. and depending upon the use case in your application select the right one.<\/p>\n

References:
\nhttp:\/\/docs.spring.io\/spring\/docs\/2.5.5\/reference\/aop.html
\nhttp:\/\/docs.spring.io\/spring\/docs\/current\/spring-framework-reference\/html\/aop.html<\/p>\n","protected":false},"excerpt":{"rendered":"

Spring AOP Spring AOP (Aspect-oriented programming) framework is used to modularize cross-cutting concerns in aspects.Some of cases where we can use it are to control some of common things like logging , adding some extra feature without actually touching the core logic. This blog post will explain how to enable aspects in our AEM projects […]<\/p>\n","protected":false},"author":82,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":22},"categories":[1],"tags":[4847,2106,4841,2113],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/24939"}],"collection":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/users\/82"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/comments?post=24939"}],"version-history":[{"count":0,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/posts\/24939\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/media?parent=24939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/categories?post=24939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tothenew.com\/blog\/wp-json\/wp\/v2\/tags?post=24939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}