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。