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<h2 class="post-title entry-title">Spring JoinPoint and Advice Arguments</h2>
<p><b>Join point:</b> A point during the execution of a program, such as the execution of a method or the handling of an exception. In Spring AOP, a join point always represents a method execution. Join point information is available in advice bodies by declaring a parameter of type <em>org.aspectj.lang.JoinPoint</em>.</p>
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<p>We&#8217;ll now learn about join points, and how we can use arguments in the advice methods to get information about join points.</p>
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<pre class="highlight">package com.dineshonjava.sdnext.aop.tutorial.aspectJ; 
 
import org.springframework.context.ApplicationContext; 
import org.springframework.context.support.ClassPathXmlApplicationContext; 
 
import com.dineshonjava.sdnext.aop.tutorial.aspectJ.service.ShapeService; 
 
public class AopTest { 
 
 public static void main(String args[]) 
 { 
 ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml"); 
 ShapeService service=context.getBean("shapeService",ShapeService.class); 
 service.getCircle().setName("Dummy Circle"); 
 System.out.println(service.getCircle().getName()); 
 } 
} 
</pre>
<pre class="highlight">package com.dineshonjava.sdnext.aop.tutorial.aspectJ; 
 
import org.aspectj.lang.JoinPoint; 
import org.aspectj.lang.annotation.Aspect; 
import org.aspectj.lang.annotation.Before; 
import org.aspectj.lang.annotation.Pointcut; 
 
import com.dineshonjava.sdnext.aop.tutorial.aspectJ.model.Circle; 
 
@Aspect 
public class LoggingAspect { 
 
 @Before("allCircleMethods()") 
 public void loggingAdvice(JoinPoint joinpoint) 
 { 
 System.out.println("Run Advice..... get method Executed"); 
 System.out.println(joinpoint.toString()); 
 Circle c=(Circle)joinpoint.getTarget(); 
 System.out.println(c.getName()); 
 } 
 
// @Before("args(name)") 
// public void allStringMethodArguments(String name){ 
// 
// System.out.println("A setter method has been executed............"+name); 
// } 
 
 @Before("args(String)") 
 public void allStringMethodArguments(){ 
 
 System.out.println("A setter method has been executed............"); 
 } 
 
 @Pointcut("within(com.venkat.Spring.Aop.model.*)") 
 public void allCircleMethods(){} 
 } 
</pre>
<p> ;</p>
<pre class="highlight">package com.dineshonjava.sdnext.aop.tutorial.aspectJ.model; 
 
public class Circle { 
 
 private String name; 
 
 public String getName() { 
 return name; 
 } 
 
 public void setName(String name) { 
 this.name = name; 
 } 
} 
</pre>
<p> ;</p>
<pre class="highlight">package com.dineshonjava.sdnext.aop.tutorial.aspectJ.model; 
 
public class Triangle { 
 
 private String name; 
 
 public String getName() { 
 return name; 
 } 
 
 public void setName(String name) { 
 this.name = name; 
 } 
} 
</pre>
<p> ;</p>
<pre class="highlight">package com.dineshonjava.sdnext.aop.tutorial.aspectJ.service; 
 
import com.dineshonjava.sdnext.aop.tutorial.aspectJ.model.Circle; 
import com.dineshonjava.sdnext.aop.tutorial.aspectJ.model.Triangle; 
 
public class ShapeService { 
 
 private Triangle triangle; 
 private Circle circle; 
 public Triangle getTriangle() { 
 return triangle; 
 } 
 public void setTriangle(Triangle triangle) { 
 this.triangle = triangle; 
 } 
 public Circle getCircle() { 
 return circle; 
 } 
 public void setCircle(Circle circle) { 
 this.circle = circle; 
 } 
} 
</pre>
<p> ;</p>
<pre class="highlight"><;beans xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.springframework.org/schema/beans" xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd 
 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd 
 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">; 
<;aop:aspectj-autoproxy>; 
 <;bean class="com.dineshonjava.sdnext.aop.tutorial.aspectJ.model.Triangle" name="triangle">; 
 <;property name="name" value="triangle name">; 
 <;/property>;<;/bean>; 
 <;bean class="com.dineshonjava.sdnext.aop.tutorial.aspectJ.model.Circle" name="circle">; 
 <;property name="name" value="circle name">; 
 <;/property>;<;/bean>; 
 <;bean class="com.dineshonjava.sdnext.aop.tutorial.aspectJ.service.ShapeService" name="shapeService">; 
 <;property name="triangle" ref="triangle">; 
 <;property name="circle" ref="circle">; 
 <;/property>;<;/property>;<;/bean>; 
 <;bean class="com.dineshonjava.sdnext.aop.tutorial.aspectJ.Aspect.LoggingAspect" name="loggingAdvice">; 
<;/bean>;<;/aop:aspectj-autoproxy>;<;/beans>; 
</pre>
<p> ;</p>
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