Spring AOP_学习记录_02

版权声明： https://blog.csdn.net/qq_38386316/article/details/88824258

1. Pointcuts and Wildcard Expressions、A few More Pointcut Expressions

• org.zcs.springAop-AopMain.java

package org.zcs.springAop;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.zcs.springAop.service.ShapeService;

public class AopMain {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ApplicationContext ctx = new ClassPathXmlApplicationContext("spring.xml");
		ShapeService shapeservice = ctx.getBean("shapeService", ShapeService.class);
		System.out.println(shapeservice.getCircle().getName());
	}
}

• org.zcs.springAop-aspect - LoggingAspect.java

package org.zcs.springAop.aspect;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class LoggingAspect {
	//@Before("execution(	public String org.zcs.springAop.model.Circle.getName())")
	@Before("allGetters() && allCircleMethods()")
	public void LoggingAdvice() {
		System.out.println("Advice running.... Get Method called.");
	}
	@Before("allGetters() ")
	public void secondAdvice() {
		System.out.println("Second Advice executed..");
	}
	@Pointcut("execution(	public *  get*())")
	public void allGetters() {
	}
	@Pointcut("within(org.zcs.springAop.model.Circle)")
	public void allCircleMethods() {}
	
}

• org.zcs.springAop.model - Circle.java

package org.zcs.springAop.model;

public class Circle {
	private String name;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
}

• org.zcs.springAop.model - Triangle.java

package org.zcs.springAop.model;

public class Triangle {
	private String name;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}
	
}

• org.zcs.springAop.service - ShapeService.java

package org.zcs.springAop.service;

import org.zcs.springAop.model.Circle;
import org.zcs.springAop.model.Triangle;

public class ShapeService {
	private Circle circle;
	private Triangle triangle;
	public Circle getCircle() {
		return circle;
	}
	public void setCircle(Circle circle) {
		this.circle = circle;
	}
	public Triangle getTriangle() {
		return triangle;
	}
	public void setTriangle(Triangle triangle) {
		this.triangle = triangle;
	}
	
}

• spring.xml

<?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"
    xsi:schemaLocation="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">
       <aop:aspectj-autoproxy></aop:aspectj-autoproxy>
       <bean name="triangle" class = "org.zcs.springAop.model.Triangle">
       		<property name="name" value = "Triangle name"></property>
       </bean>
       <bean name = "circle" class = "org.zcs.springAop.model.Circle">
       		<property name="name" value = "Circle name"></property>
       </bean>
       <bean name="shapeService" class="org.zcs.springAop.service.ShapeService" autowire = "byName"></bean>
 		<bean name= "loggingAspect" class = "org.zcs.springAop.aspect.LoggingAspect"></bean>
 </beans>

2.学习记录。

• 本次主要学习了aspect中的Before的通配符的使用和切入点的使用方法。
• 可以特定的指定一个类
• 也可以用通配符和把 状态、类、方法都可以省略
• 切入点可以是满足一定条件下进行切入，也可以使用通配符进行切入。