Spring Aspectj 面向切面示例

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首先导入需要的jar包

其中aspectjweaver的jar包必须是1.5版本以上的，cglib-nodep-2.2的jar包不能与cglib.jar不能共用。

接下来是代码层：

1.自定义注解代码：

package com.springtest.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface LogAnnotation {
String desc() default "";
}

2.自定义切面代码：

package com.springtest.aspect;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

import com.springtest.annotation.LogAnnotation;

@Component
@Aspect
public class AspectLog {
@AfterReturning("within(com.springtest.test.MainTestService) && @annotation(la)")
public void aspectTest(JoinPoint joinpoint, LogAnnotation la){
System.out.println("this is aspectlog infomation");
System.out.println(la.desc());
}
}

3.应用自定义注解的代码：

package com.springtest.test;

import com.springtest.annotation.LogAnnotation;

public class MainTestService {
@LogAnnotation(desc=("this is pass infotation"))
public void test(){
System.out.println("this is before test");
}
}

4.最后这是测试的实现代码：

package com.springtest.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TryTest {
public static void main(String[] args) {
ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
MainTestService mainTestService = (MainTestService) ctx.getBean("mainTestService",MainTestService.class);
mainTestService.test();
}
}

5.spring的配置文件为

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<aop:aspectj-autoproxy />
<context:component-scan base-package="com.springtest" />
<bean id="mainTestService" class="com.springtest.test.MainTestService">
</bean>
</beans>