首页 > 代码库 > Spring4学习笔记-AOP(基于配置文件的方式)
Spring4学习笔记-AOP(基于配置文件的方式)
引入的jar包与基于注解的方式引入的jar包相同
ArithmeticCalculator接口
package com.spring.aop.impl.xml; public interface ArithmeticCalculator { public int add(int i, int j); public int sub(int i, int j); public int mul(int i, int j); public int div(int i, int j); }
接口实现类 ArithmeticCalculatorImpl.java
package com.spring.aop.impl.xml; public class ArithmeticCalculatorImpl implements ArithmeticCalculator{ @Override public int add(int i, int j) { int result = i + j; return result; } @Override public int sub(int i, int j) { int result = i - j; return result; } @Override public int mul(int i, int j) { int result = i * j; return result; } @Override public int div(int i, int j) { int result = i / j; return result; } }
切面类 LoggingAspect.java
package com.spring.aop.impl.xml; import java.util.Arrays; import java.util.List; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; public class LoggingAspect { public void beforeMethod(JoinPoint joinpoint) { String methodName = joinpoint.getSignature().getName(); List<Object>args = Arrays.asList(joinpoint.getArgs()); System.out.println("前置通知:The method "+ methodName +" begins with " + args); } public void afterMethod(JoinPoint joinpoint) { String methodName = joinpoint.getSignature().getName(); //List<Object>args = Arrays.asList(joinpoint.getArgs()); 后置通知方法中可以获取到参数 System.out.println("后置通知:The method "+ methodName +" ends "); } public void afterReturnning(JoinPoint joinpoint, Object result) { String methodName = joinpoint.getSignature().getName(); System.out.println("返回通知:The method "+ methodName +" ends with " + result); } public void afterThrowing(JoinPoint joinpoint, Exception e) { String methodName = joinpoint.getSignature().getName(); System.out.println("异常通知:The method "+ methodName +" occurs exception " + e); } public Object aroundMethod(ProceedingJoinPoint point) { Object result = null; String methodName = point.getSignature().getName(); try { //前置通知 System.out.println("The method "+ methodName +" begins with " + Arrays.asList(point.getArgs())); //执行目标方法 result = point.proceed(); //翻译通知 System.out.println("The method "+ methodName +" ends with " + result); } catch (Throwable e) { //异常通知 System.out.println("The method "+ methodName +" occurs exception " + e); throw new RuntimeException(e); } //后置通知 System.out.println("The method "+ methodName +" ends"); return result; } }
切面类 ValidationAspect.java
package com.spring.aop.impl.xml; import java.util.Arrays; import org.aspectj.lang.JoinPoint; public class ValidationAspect { public void validateArgs(JoinPoint joinPoint) { System.out.println("validate:" + Arrays.asList(joinPoint.getArgs())); } }
applicationContext-xml.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-4.1.xsd"> <!-- 配置bean --> <bean id="arithmeticCalculator" class="com.spring.aop.impl.xml.ArithmeticCalculatorImpl"></bean> <!-- 配置切面的bean --> <bean id="loggingAspect" class="com.spring.aop.impl.xml.LoggingAspect"></bean> <bean id="validationAspect" class="com.spring.aop.impl.xml.ValidationAspect"></bean> <!-- 配置AOP --> <aop:config> <!-- 配置切点表达式 --> <aop:pointcut expression="execution(* com.spring.aop.impl.xml.ArithmeticCalculator.*(..))" id="pointcut"/> <!-- 配置切面及通知,使用order指定优先级 --> <aop:aspect ref="loggingAspect" order="1"> <!-- 环绕通知 --> <!-- <aop:around method="aroundMethod" pointcut-ref="pointcut"/> --> <!-- 前置通知 --> <aop:before method="beforeMethod" pointcut-ref="pointcut"/> <!-- 后置通知 --> <aop:after method="afterMethod" pointcut-ref="pointcut"/> <!-- 异常通知 --> <aop:after-throwing method="afterThrowing" pointcut-ref="pointcut" throwing="e"/> <!-- 返回通知 --> <aop:after-returning method="afterReturnning" pointcut-ref="pointcut" returning="result"/> </aop:aspect> <aop:aspect ref="validationAspect" order="2"> <!-- 前置通知 --> <aop:before method="validateArgs" pointcut-ref="pointcut"/> </aop:aspect> </aop:config> </beans>
Main.java
package com.spring.aop.impl.xml; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class Main { public static void main(String[] args) { //创建spring IOC容器 ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext-xml.xml"); //从IOC容器中获取bean实例 ArithmeticCalculator arithmeticCalculator = applicationContext.getBean(ArithmeticCalculator.class); int result = arithmeticCalculator.add(4, 6); System.out.println(result); result = arithmeticCalculator.sub(4, 6); System.out.println(result); System.out.println(result); result = arithmeticCalculator.mul(4, 6); System.out.println(result); System.out.println(result); result = arithmeticCalculator.div(4, 0); System.out.println(result); } }
源码 http://yunpan.cn/cgsrQHmUvrIQt 提取码 6564
本文出自 “阿凡达” 博客,请务必保留此出处http://shamrock.blog.51cto.com/2079212/1557743
Spring4学习笔记-AOP(基于配置文件的方式)
声明:以上内容来自用户投稿及互联网公开渠道收集整理发布,本网站不拥有所有权,未作人工编辑处理,也不承担相关法律责任,若内容有误或涉及侵权可进行投诉: 投诉/举报 工作人员会在5个工作日内联系你,一经查实,本站将立刻删除涉嫌侵权内容。