spring 基于xml文件配置AOP

亦凉 2022-04-22 23:22 238阅读 0赞

转载自：[https://www.cnblogs.com/ooooevan/p/5823598.html][https_www.cnblogs.com_ooooevan_p_5823598.html]

讲了用注解配置AOP，现在讲用xml怎么配置AOP  
其实逻辑是一样的，只是用xml的方法，要把这种逻辑写出来，告诉spring框架去执行。

方法接口

package com.atguigu.spring.aop.impl;
    
    public interface Calculator {
    
        public int add(int i,int j);
        public int sub(int i,int j);
        public int div(int i,int j);
        public int mul(int i,int j);
    }

方法实现类

package com.atguigu.spring.aop.impl;
    
    public class CalculatorImpl implements Calculator{
    
        public int add(int i,int j){
            return i+j;
            };
        public int sub(int i,int j){
            return i-j;
            };
        public int div(int i,int j){
            return i/j;
            };
        public int mul(int i,int j){
            return i*j;
            }
    }

日志切面：

package com.atguigu.spring.aop.impl;
    
    import java.util.Arrays;
    import java.util.List;
    
    public class LoggingAspect {
           //前置通知日志日志
        public void beforedMethod(JoinPoint joinPoint){
            String methodName=joinPoint.getSignature().getName();
            List<Object> args = Arrays.arrays(joinPoint.getArgs());
            System.out.println("The method "+ methodName +"begins: "+args);
        }
           //返回通知日志
        public void afterReturningMethod(Joinpoint joinpoint,Object result){
            String methodName=joinPoint.getSignature().getName();
            System.out.println("The method "+methodName+" ends with "+result);
        }
          // 异常通知日志
        public void afterThrowingMethod(Joinpoint joinpoint,Exception e){
            String methodName=joinPoint.getSignature().getName();
            System.out.println("The method "+methodName+" occurs excetion "+e);
        }
    }

验证切面：

package com.atguigu.spring.aop.impl;
    
    import java.util.Arrays;
    import java.util.List;
    
    public class ValidationAspect {
        public void beforedMethod(JoinPoint joinPoint){
            System.out.println("---->Validation: "+ Arrays.aslist(joinPoint.getArgs));
        }
    }

main函数

package com.atguigu.spring.aop.impl;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    public class Main {
    
        public static void main(String[] args) {
    
            ApplicationContext ctx=new ClassPathXmlApplicationContext("application.xml");
            Calculator cal = (Calculator) ctx.getBean(Calculator.class);
            int result=cal.add(1,2);
            System.out.println("result: "+result);
        }
    }

xml配置

<bean id="calculatorimpl" class="com.atguigu.spring.aop.impl.Calculatorimpl"></bean>
    
    <bean id="loggingAspect" class="com.atguigu.spring.aop.impl.LoggingAspect"></bean>
    <bean id="validationAspect" class="com.atguigu.spring.aop.impl.ValidationAspect"></bean>
    
       
    <aop:config>
        
        <aop:pointcut expression="execution(* com.atguigu.spring.aop.impl.CalculatorImpl.*(int, int))" 
        id="pointcut"></aop:pointcut>
        
        <aop:aspect ref="validationAspect" order="2">
            <aop:before method="beforeMethod" pointcut-ref="pointcut"></aop:before>
        </aop:aspect>
        
        <aop:aspect ref="loggingAspect" order="1">
            
            <aop:before method="beforeMethod" pointcut-ref="pointcut"></aop:before>
            
            <aop:after-returning method="afterReturningMethod" pointcut-ref="pointcut" returning="result"></aop:after-returning>
            
            <aop:after-throwing method="afterThrowingMethod" pointcut-ref="pointcut" throwing="e"></aop:after-throwing>
        </aop:aspect>
    </aop:config>

结果和注解配置的一致，但配置比较麻烦，不推荐使用。

[https_www.cnblogs.com_ooooevan_p_5823598.html]: https://www.cnblogs.com/ooooevan/p/5823598.html