这一章节我们使用注解来简单实现AOP日志。
1.domain
蛋糕类：
package com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5;
public class Cake {
private String name = "";
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
烤炉类：
package com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5;public class Oven {private String name = "";@Overridepublic String toString() {return name;}public String getName() {return name;}public void setName(String name) {this.name = name;}}
厨师类：
package com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5;public class Chief {private static int index = 0;public static int getIndex() {return index;}public static void setIndex(int index) {Chief.index = index;}private Cake cake = null;private final int id = index++;private String name = "";private Oven oven = null;public Cake getCake() {return cake;}public int getId() {return id;}public String getName() {return name;}public Oven getOven() {return oven;}public void setCake(Cake cake) {this.cake = cake;}public void setName(String name) {this.name = name;}public void setOven(Oven oven) {this.oven = oven;}public void makeOneCake() {System.out.println(getName() + " make " + getCake().getName());}}
日志类：（重点）
package com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5;import org.aspectj.lang.annotation.After;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.aspectj.lang.annotation.Pointcut;@Aspectpublic class Log {@Pointcut("execution(* com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5.Chief.*(..))")public void makeOneCake() {}@Before("makeOneCake()")public void washOven() {System.out.println("washOven,logging.....");}@Before("makeOneCake()")public void prepare() {System.out.println("prepare,logging.....");}@After("makeOneCake()")public void after() {System.out.println("after someting to do,logging.....");}}
日志类需要注意的地方：
（1）使用@Aspect标签，标注一个切面
（2）方法public void makeOneCake() {}，其实只是一个标签，可以理解成xml里面的切面id
（3）@Before@After就是切点里面的方法前后顺序
配置类：（我们这里使用基于java的配置）
package com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class SpringBeans {@Beanpublic Chief jack() {Chief chief = new Chief();chief.setName("jack");chief.setOven(oven());chief.setCake(cake());return chief;}@Beanpublic Oven oven() {Oven oven = new Oven();oven.setName("big oven");return oven;}@Beanpublic Cake cake() {Cake cake = new Cake();cake.setName("blueberryCheeseCake");return cake;}@Beanpublic Log log() {return new Log();}}
2.测试类：
package com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.ApplicationContext;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;@RunWith(SpringJUnit4ClassRunner.class)@ContextConfiguration(locations = {"/com/raylee/my_new_spring/my_new_spring/ch03/topic_1_5/ApplicationContext-test.xml" })public class ChiefTest {@Autowiredprivate ApplicationContext applicationContext;@Testpublic void testChief() {Chief jack = (Chief) applicationContext.getBean(Chief.class);jack.makeOneCake();}}
3.配置文件（重点）
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:util="http://www.springframework.org/schema/util"xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsdhttp://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsdhttp://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"><context:component-scanbase-package="com.raylee.my_new_spring.my_new_spring.ch03.topic_1_5" /><aop:aspectj-autoproxy /></beans>
解释一下配置文件的东西：通过<aop:aspectj-autoproxy />就可以知道注册了的切面信息。
测试输出：
washOven,logging.....
prepare,logging.....
jack make blueberryCheeseCake
after someting to do,logging.....
总结：这一章节主要使用注解来简单实现AOP日志。
目录：http://blog.csdn.net/raylee2007/article/details/50611627