从头认识Spring-3.5 简单的AOP日志实现(注解版)-某方法之前的前后记录日志
Posted 李灵晖
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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 = "";
@Override
public 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;
@Aspect
public 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;
@Configuration
public class SpringBeans {
@Bean
public Chief jack() {
Chief chief = new Chief();
chief.setName("jack");
chief.setOven(oven());
chief.setCake(cake());
return chief;
}
@Bean
public Oven oven() {
Oven oven = new Oven();
oven.setName("big oven");
return oven;
}
@Bean
public Cake cake() {
Cake cake = new Cake();
cake.setName("blueberryCheeseCake");
return cake;
}
@Bean
public 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 {
@Autowired
private ApplicationContext applicationContext;
@Test
public 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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.0.xsd
http://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-scan
base-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
我的github:https://github.com/raylee2015/my_new_spring
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