Spring(九) AOP(二)spring面向切面编程--采用静态配置文件的方式

Spring对AOP的支持（采用静态配置文件的方式）

1、spring依赖库
* SPRING_HOME/dist/spring.jar
* SPRING_HOME/lib/commons-logging.jar
* SPRING_HOME/lib/log4j-1.2.14.jar
* SPRING_HOME/lib/aspectj/*.jar

2、配置方法
<aop:config>
<aop:aspect id="securityAspect" ref="securityHandler">
<aop:pointcut id="allAddMethod" expression="execution(* com.bjsxt.spring.*.add*(..)) || execution(* com.bjsxt.spring.*.del*(..))"/>
<aop:before pointcut-ref="allAddMethod" method="checkSecurity"/>
</aop:aspect>
</aop:config>
    

详细代码如下：

1.接口：

package com.wlh.spring;

public interface UserManager {
  public void addUser(String username,String pwd);
  public void delUser(int id);
  public void findUser(int id);
  public void updateUser(int id ,String username,String pwd);
}

2.目标类（接口实现类）：

package com.wlh.spring;

public class UserManagerImpl implements UserManager {

	public void addUser(String username, String pwd) {
      System.out.println("====addUser()=====");
	}

	public void delUser(int id) {
		 System.out.println("====delUser()=====");
	}

	public void findUser(int id) {
		 System.out.println("====findUser()=====");
	}

	public void updateUser(int id, String username, String pwd) {
		 System.out.println("====updateUser()=====");
	}

}

3.Aspect类：

package com.wlh.spring;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

public class SecurityHandler  {

	private void checkSecurity() {
		System.out.println("-----checkSecurity-------");
	}

	

}

4.配置文件如下:
<?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:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

  <bean id="userManager" class="com.wlh.spring.UserManagerImpl"/>
  
    <bean id="securityHandler" class="com.wlh.spring.SecurityHandler"/><!-- 切面类 -->
   <aop:config>
      <!--Aspect由Pointcut和Advice组成
  <aop:aspect id="securityAspect" ref="securityHandler"><!-- 引用切面类 -->
          <!-- 声明Pointcut--表达式方法声明匹配被切入的类及其方法 -->
     <aop:pointcut id="applyMethod" expression="execution(* com.wlh.spring.*.add*(..)) || execution(* com.wlh.spring.*.del*(..))"/>
  <!-- 声明Advice--即,切面类的要切入方法 -->
  <aop:before pointcut-ref="applyMethod" method="checkSecurity"/>    
</aop:aspect>  

</aop:config>

</beans>

5.客户端调用：

package client;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.wlh.spring.UserManager;
public class Client {
	
public static void main(String []args){
	
	BeanFactory factory=new ClassPathXmlApplicationContext("applicationContext.xml");
	UserManager userManager=(UserManager) factory.getBean("userManager");
	userManager.addUser("wlh","wlh");
	
}
}

6：输出结果：

-----checkSecurity-------
====addUser()=====