Why spring aop can't find referenced pointcut - spring

Question

I configure the required but why error ocured. I checked few docs but no proper solution. I am using annotation based aop with autoproxy. Some code snippet is there below.
business class
package com.jlc.spring;
public class Business1 {
public void myBusiness() {
System.out.println("Business1-myBusiness");
}
public void doMyBusiness() {
System.out.println("Business1-doMyBusiness");
}
}
aop class
package com.jlc.spring.service;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
#Aspect
public class LogService {
/*
#Pointcut("execution(* com.jlc.spring.Business1.*Business(..))")
public void m1(){}
#Pointcut("execution(* com.jlc.spring.Business1.my*(..))")
public void m2(){}
#Pointcut("execution(* com.jlc.spring.Business1.do*(..))")
public void m3(){}
*/
#Pointcut("execution(* *.*Business1.my.(..))")
private void m2(){}
/*
#Before("m1()")
public void log1(){
System.out.println("LogService-log1");
}
#Before("m2()")
public void log2(){
System.out.println("LogService-log2");
}
#Before("m3()")
public void log3(){
System.out.println("LogService-log3");
}
*/
#Before("m2()")
public void log2(){
System.out.println("LogService-log2");
}
}
config file
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tool="http://www.springframework.org/schema/tool"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tool http://www.springframework.org/schema/tx/spring-tool-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<context:annotation-config/>
<aop:aspectj-autoproxy/>
<bean id="ls" class="com.jlc.spring.service.LogService"/>
<bean id="b1" class="com.jlc.spring.Business1"/>
</beans>
and the error:
log4j:WARN No appenders could be found for logger (org.springframework.context.support.ClassPathXmlApplicationContext).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'b1' defined in class path resource [jlcindia.xml]: Initialization of bean failed; nested exception is java.lang.IllegalArgumentException: error at ::0 can't find referenced pointcut m2
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at com.jlc.spring.Main.main(Main.java:8)
Caused by: java.lang.IllegalArgumentException: error at ::0 can't find referenced pointcut m2
at org.aspectj.weaver.tools.PointcutParser.parsePointcutExpression(PointcutParser.java:316)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.buildPointcutExpression(AspectJExpressionPointcut.java:195)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.checkReadyToMatch(AspectJExpressionPointcut.java:181)
at org.springframework.aop.aspectj.AspectJExpressionPointcut.getClassFilter(AspectJExpressionPointcut.java:162)
at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:200)
at org.springframework.aop.support.AopUtils.canApply(AopUtils.java:254)
at org.springframework.aop.support.AopUtils.findAdvisorsThatCanApply(AopUtils.java:286)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findAdvisorsThatCanApply(AbstractAdvisorAutoProxyCreator.java:117)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:87)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:359)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:322)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:407)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1426)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
... 11 more

Answer 1

Try to fix your xml config file that way:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd">
<context:annotation-config/>
<aop:aspectj-autoproxy/>
<bean id="ls" class="com.jlc.spring.service.LogService"/>
<bean id="b1" class="com.jlc.spring.Business1"/>
</beans>
Also you have error in pointcut syntax, try this:
#Pointcut("execution(* *.*Business1.my*(..))")
private void m2(){}
See examples of pointcut syntax here.
Make sure that you have these dependencies in your pom.xml
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>4.2.4.RELEASE</version>
</dependency>
My Spring version is 4.2.4.RELEASE