Spring AOP基本配置
2013-03-15 15:03
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前几天在公司的项目里面加入了SpringAOP的特性,主要用来自动抽取一些信息,填充展示的实体类。为了不破坏原有的结构,只能使用AOP切面,切在实体保存的时候,通过设置AfterReturn切入点,就可以很好的完成抽取工作了。
在Spring3.0中除了引入基本的jar包,另外要加入
aspectj-1.6.10.jar
aspectjrt.jar
com.springsource.net.sf.cglib-2.2.0.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
之后在applicationContext.xml中加入如下的基本配置:
<?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/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:component-scan base-package="cn.com.yong.aop">
<context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/>
</context:component-scan>
<aop:aspectj-autoproxy />
</beans>
完成这两步,相当于应用已经有了Spring的AOP特性了。
接着,编写自己的业务逻辑:
1、首先定义一个接口
public interface MyInterface {
public void add1(String str);
public void add2(Object str);
}
实现类:
public class Address implements MyInterface {
public void add(String address) {
System.out.println("=====1======"+address+"===========");
}
public void add2(Object address) {
System.out.println("=====2======"+address+"===========");
}
}
业务类:
public class Person {
public void add(Object obj) {
System.out.println("=========add method=========");
}
}
然后我们编写Aspect类:
@Aspect
public class AuthorityAspect {
@Before("execution(* *.add(..)) && within(cn.com.yong.test.Person)")
public void authority() {
// before add method, we should authority
System.out.println("=======check authority1=======");
}
@Before("target(cn.com.yong.test.MyInterface) && args(java.lang.String)")
public void authority2() {
// before add method, we should authority
System.out.println("=======check authority2=======");
}
}
显然,这个切面类,定义了两个before切入点,分别切在add()方法和MyInterface接口的实现类上。
最后是我的测试方法:
public class TestAop {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
// 测试类1
Person p = context.getBean("person", Person.class);
System.out.println("========person start============");
p.add(new Object());
System.out.println("==========person end=============");
// 测试类2
MyInterface a = context.getBean("address", MyInterface.class);
System.out.println("========address start===========");
a.add("yong");
a.add2(new Object());
System.out.println("========address end=============");
}
}
测试结果:
========person start============
=========add method=========
==========person end=============
========address start===========
=====1======yong===========
=====2====java.lang.Object@3e7799=========
========address end=============
Perfect!
在Spring3.0中除了引入基本的jar包,另外要加入
aspectj-1.6.10.jar
aspectjrt.jar
com.springsource.net.sf.cglib-2.2.0.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
之后在applicationContext.xml中加入如下的基本配置:
<?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/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:component-scan base-package="cn.com.yong.aop">
<context:include-filter type="annotation" expression="org.aspectj.lang.annotation.Aspect"/>
</context:component-scan>
<aop:aspectj-autoproxy />
</beans>
完成这两步,相当于应用已经有了Spring的AOP特性了。
接着,编写自己的业务逻辑:
1、首先定义一个接口
public interface MyInterface {
public void add1(String str);
public void add2(Object str);
}
实现类:
public class Address implements MyInterface {
public void add(String address) {
System.out.println("=====1======"+address+"===========");
}
public void add2(Object address) {
System.out.println("=====2======"+address+"===========");
}
}
业务类:
public class Person {
public void add(Object obj) {
System.out.println("=========add method=========");
}
}
然后我们编写Aspect类:
@Aspect
public class AuthorityAspect {
@Before("execution(* *.add(..)) && within(cn.com.yong.test.Person)")
public void authority() {
// before add method, we should authority
System.out.println("=======check authority1=======");
}
@Before("target(cn.com.yong.test.MyInterface) && args(java.lang.String)")
public void authority2() {
// before add method, we should authority
System.out.println("=======check authority2=======");
}
}
显然,这个切面类,定义了两个before切入点,分别切在add()方法和MyInterface接口的实现类上。
最后是我的测试方法:
public class TestAop {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
// 测试类1
Person p = context.getBean("person", Person.class);
System.out.println("========person start============");
p.add(new Object());
System.out.println("==========person end=============");
// 测试类2
MyInterface a = context.getBean("address", MyInterface.class);
System.out.println("========address start===========");
a.add("yong");
a.add2(new Object());
System.out.println("========address end=============");
}
}
测试结果:
========person start============
=========add method=========
==========person end=============
========address start===========
=====1======yong===========
=====2====java.lang.Object@3e7799=========
========address end=============
Perfect!
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