Spring AOP（6）-- XML配置

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-4.0.xsd">

<!-- 配置 bean -->
<bean id="arithmeticCalculator"
class="com.atguigu.spring.aop.xml.ArithmeticCalculatorImpl"></bean>

<!-- 配置切面的 bean. -->
<bean id="loggingAspect"
class="com.atguigu.spring.aop.xml.LoggingAspect"></bean>

<bean id="vlidationAspect"
class="com.atguigu.spring.aop.xml.VlidationAspect"></bean>

<!-- 配置 AOP -->
<aop:config>
<!-- 配置切点表达式 -->
<aop:pointcut expression="execution(* com.atguigu.spring.aop.xml.ArithmeticCalculator.*(int, int))"
id="pointcut"/>
<!-- 配置切面及通知 -->
<aop:aspect ref="loggingAspect" order="2">
<aop:before method="beforeMethod" pointcut-ref="pointcut"/>
<aop:after method="afterMethod" pointcut-ref="pointcut"/>
<aop:after-throwing method="afterThrowing" pointcut-ref="pointcut" throwing="e"/>
<aop:after-returning method="afterReturning" pointcut-ref="pointcut" returning="result"/>
<!--
<aop:around method="aroundMethod" pointcut-ref="pointcut"/>
-->
</aop:aspect>
<aop:aspect ref="vlidationAspect" order="1">
<aop:before method="validateArgs" pointcut-ref="pointcut"/>
</aop:aspect>
</aop:config>

</beans>

ArithmeticCalculator.java 

package com.atguigu.spring.aop.xml;

public interface ArithmeticCalculator {

int add(int i, int j);
int sub(int i, int j);

int mul(int i, int j);
int div(int i, int j);

}

ArithmeticCalculatorImpl.java

package com.atguigu.spring.aop.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;
}

}

LoggingAspect.java

package com.atguigu.spring.aop.xml;

import java.util.Arrays;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;

public class LoggingAspect {

public void beforeMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
Object [] args = joinPoint.getArgs();

System.out.println("The method " + methodName + " begins with " + Arrays.asList(args));
}

public void afterMethod(JoinPoint joinPoint){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends");
}

public void afterReturning(JoinPoint joinPoint, Object result){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " ends with " + result);
}

public void afterThrowing(JoinPoint joinPoint, Exception e){
String methodName = joinPoint.getSignature().getName();
System.out.println("The method " + methodName + " occurs excetion:" + e);
}

@Around("execution(public int com.atguigu.spring.aop.ArithmeticCalculator.*(..))")
public Object aroundMethod(ProceedingJoinPoint pjd){

Object result = null;
String methodName = pjd.getSignature().getName();

try {
//前置通知
System.out.println("The method " + methodName + " begins with " + Arrays.asList(pjd.getArgs()));
//执行目标方法
result = pjd.proceed();
//返回通知
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;
}
}

VlidationAspect.java

package com.atguigu.spring.aop.xml;

import java.util.Arrays;

import org.aspectj.lang.JoinPoint;

public class VlidationAspect {

public void validateArgs(JoinPoint joinPoint){
System.out.println("-->validate:" + Arrays.asList(joinPoint.getArgs()));
}

}

Main.java

package com.atguigu.spring.aop.xml;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Main {

public static void main(String[] args) {

ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext-xml.xml");
ArithmeticCalculator arithmeticCalculator = (ArithmeticCalculator) ctx.getBean("arithmeticCalculator");

System.out.println(arithmeticCalculator.getClass().getName());

int result = arithmeticCalculator.add(1, 2);
System.out.println("result:" + result);

result = arithmeticCalculator.div(1000, 0);
System.out.println("result:" + result);
}

}