{"id":541,"date":"2012-01-01T23:28:33","date_gmt":"2012-01-01T22:28:33","guid":{"rendered":"http:\/\/doanduyhai.wordpress.com\/?p=541"},"modified":"2012-01-01T23:28:33","modified_gmt":"2012-01-01T22:28:33","slug":"advanced-aspectj-part-v-integration-with-spring","status":"publish","type":"post","link":"https:\/\/www.doanduyhai.com\/blog\/?p=541","title":{"rendered":"Advanced AspectJ part V : integration with Spring"},"content":{"rendered":"

In this article we’ll see how to integrate your own aspects with Spring.<\/p>\n

First we focus on load-time weaving using Spring’s dedicated AspectJ agents. Then we’ll see how to let Spring inject beans into your aspects<\/p>\n

<\/p>\n

The below configuration is valid for Spring 3.0.5<\/strong>, Tomcat 6<\/strong> & AspectJ 1.6.12<\/strong><\/p><\/blockquote>\n

 <\/p>\n

I Load-time weaving with Spring<\/h1>\n

A Spring configuration<\/h2>\n

To enable load-time weaving, we must add the <context:load-time-weaver><\/strong> tag in the Spring XML configuration<\/p>\n

\n&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;\n&lt;beans xmlns=&quot;http:\/\/www.springframework.org\/schema\/beans&quot;\n\txmlns:xsi=&quot;http:\/\/www.w3.org\/2001\/XMLSchema-instance&quot;\n\txmlns:context=&quot;http:\/\/www.springframework.org\/schema\/context&quot;\n\txsi:schemaLocation=&quot;http:\/\/www.springframework.org\/schema\/beans http:\/\/www.springframework.org schema\/beans\/spring-beans-3.0.xsd\n\thttp:\/\/www.springframework.org\/schema\/context http:\/\/www.springframework.org\/schema\/context\/spring-context-2.5.xsd&quot;&gt;\n\t...\n\t...\n\t&lt;context:load-time-weaver \n\t\tweaver-class=&quot;org.springframework.instrument.classloading.ReflectiveLoadTimeWeaver&quot;\n\t\taspectj-weaving=&quot;on&quot;\/&gt;\n\t...\n\t...\n&lt;\/beans&gt;\n<\/pre>\n
The weaver class org.springframework.instrument.classloading.ReflectiveLoadTimeWeaver<\/strong> is applicable to Tomcat 6. If you are using another application server or servlet container, please refer to Spring official recommendation (table 7.1) here : Weaver Class configuration<\/a><\/p>\n
You need to add extra Maven dependencies to your project’ pom.xml<\/strong> to get this class:<\/p>\n
\n\t&lt;dependency&gt;\n  \t\t&lt;groupId&gt;org.springframework&lt;\/groupId&gt;\n  \t\t&lt;artifactId&gt;spring-instrument&lt;\/artifactId&gt;\n  \t\t&lt;version&gt;3.0.5.RELEASE&lt;\/version&gt;\n  \t\t&lt;type&gt;jar&lt;\/type&gt;\n  \t\t&lt;scope&gt;compile&lt;\/scope&gt;\n  \t&lt;\/dependency&gt;\n\t&lt;dependency&gt;\n  \t\t&lt;groupId&gt;org.springframework&lt;\/groupId&gt;\n  \t\t&lt;artifactId&gt;spring-aspects&lt;\/artifactId&gt;\n  \t\t&lt;version&gt;3.0.5.RELEASE&lt;\/version&gt;\n  \t\t&lt;type&gt;jar&lt;\/type&gt;\n  \t\t&lt;scope&gt;compile&lt;\/scope&gt;\n  \t&lt;\/dependency&gt;\n<\/pre>\n
spring-instrument-3.0.5.RELEASE.jar<\/strong> contains an Instrumentation agent needed at runtime and spring-aspects-3.0.5.RELEASE.jar<\/strong> contains aspects for Spring’s:<\/p>\n