1、新建一个工程，导入相应的jar包
aopalliance.jar
aspectjweaver.jar
commons-logging-1.2.jar
spring-aop-4.0.0.RELEASE.jar
spring-aspects-4.0.0.RELEASE.jar
spring-beans-4.0.0.RELEASE.jar
spring-context-4.0.0.RELEASE.jar
spring-core-4.0.0.RELEASE.jar
spring-expression-4.0.0.RELEASE.jar
2、建立需要切面编程的类
package com.sun.spring.stu.aop;
public interface ArithmaticCaculator {
int add(int i, int j);
int sub(int i, int j);
int mul(int i, int j);
int div(int i, int j);
}
package com.sun.spring.stu.aop;
import org.springframework.stereotype.Component;
@Component("arithmaticCaculator")
public class ArithmaticCaculatorImpl implements ArithmaticCaculator {
@Override
public int add(int i, int j) {
return i+j;
}
@Override
public int sub(int i, int j) {
return i-j;
}
@Override
public int mul(int i, int j) {
return i*j;
}
@Override
public int div(int i, int j) {
return i/j;
}
}
3、建立切面类
package com.sun.spring.stu.aop;
import java.util.Arrays;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;
@Aspect
@Component
public class LoggingAspect {
@Before("execution(public int com.sun.spring.stu.aop.ArithmaticCaculator.*(int,int))")
public void beforeMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
Object[] args = joinPoint.getArgs();
System.out.println("The method "+ methodName+" begain with:" +Arrays.asList(args));
}
}
4、配置IOC容器
<?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/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 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-4.0.xsd"> <context:component-scan base-package="com.sun.spring.stu.aop"></context:component-scan> <aop:aspectj-autoproxy></aop:aspectj-autoproxy> </beans>
5、调用需要切面编程的类，自然就会调用切面类中的相关代码
ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
ArithmaticCaculator caculator = (ArithmaticCaculator) ctx.getBean("arithmaticCaculator");
int result = caculator.add(21, 90);
System.out.print("The result:"+result);
6、结果：
2016-2-6 12:01:53 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org[email protected]2be9cb75: startup date [Sat Feb 06 12:01:53 CST 2016]; root of context hierarchy
2016-2-6 12:01:53 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [applicationContext.xml]
The method add begain with:[21, 90]
The result:111