首页joinPoint.proceed(joinPoint.getArgs())

joinPoint.proceed(joinPoint.getArgs())

时间: 2024-06-03 13:06:46 浏览: 162

Spring AOP demo

基于注解与 XML 配置文件两种形式的 AOP demo。基于 xml 配置文件的 aop 管理 ```xml  <bean id="loggingAspect" class="com.jas.aop.xml.LoggingAspect"/> <aop:config>  <aop:pointcut id="pointcut1" expression="execution(public void com.jas.aop.bean.PersonImpl.sayHello())"/> <aop:pointcut id="pointcut2" expression="execution(public void com.jas.aop.bean.PersonImpl.sayBye(String))"/>  <aop:aspect ref="loggingAspect">  <aop:before method="beforeMethod" pointcut-ref="pointcut1"/> <aop:around method="aroundMethod" pointcut-ref="pointcut2"/> </aop:aspect> </aop:config> ``` Java 类 ```java public class LoggingAspect { public void beforeMethod(JoinPoint joinPoint) { System.out.println("在目标方法执行之前执行" + ", 要拦截的方法是：" + joinPoint.getSignature()); } public Object aroundMethod(ProceedingJoinPoint joinPoint) throws Throwable { Object[] args = joinPoint.getArgs(); // 判断目标方法参数，满足条件修改参数值 if(" See You Again".equals(args[0])) { args[0] = " See You Again ..."; } // 在目标方法执行之前执行，相当于前置通知 System.out.println("这是一个前置通知"); // 执行目标方法 Object result = joinPoint.proceed(args); // 在目标方法执行之后之后，相当于后置通知 System.out.println("这是一个后置通知"); return result; } }

This is a method call for an aspect-oriented programming (AOP) framework, where a join point represents a specific point in the execution of a program, such as the execution of a method. The `proceed` method is used to continue the execution of the program from the current join point. It takes the arguments passed to the method being intercepted as a parameter. Overall, this line of code is used to continue the execution of a method that has been intercepted by an AOP framework, passing the original arguments to the method.

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