From 1b5b4fd6eb18c5cb9a9afd610679e3d9515dba0a Mon Sep 17 00:00:00 2001 From: linlei Date: Mon, 29 Apr 2024 11:10:47 +0800 Subject: [PATCH] =?UTF-8?q?MethodBeforeAdvice=E4=BC=98=E5=8C=96?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../README.md | 47 +++++++++++++------ .../com/xcs/spring/MyMethodBeforeAdvice.java | 2 +- .../README.md | 6 ++- 3 files changed, 37 insertions(+), 18 deletions(-) diff --git a/spring-aop/spring-aop-advice-methodBeforeAdvice/README.md b/spring-aop/spring-aop-advice-methodBeforeAdvice/README.md index d618eb2..bfb5d39 100644 --- a/spring-aop/spring-aop-advice-methodBeforeAdvice/README.md +++ b/spring-aop/spring-aop-advice-methodBeforeAdvice/README.md @@ -6,8 +6,8 @@ - [三、主要功能](#三主要功能) - [四、接口源码](#四接口源码) - [五、主要实现](#五主要实现) - - [六、最佳实践](#六最佳实践) - - [七、常见问题](#七常见问题) + - [六、类关系图](#六类关系图) + - [七、最佳实践](#七最佳实践) ### 一、基本信息 @@ -67,7 +67,34 @@ public interface MethodBeforeAdvice extends BeforeAdvice { - 实现了前置通知，使用 AspectJ 风格定义的通知，用于在目标方法执行前执行额外的逻辑。 -### 六、最佳实践 +### 六、类关系图 + +~~~mermaid +classDiagram +direction BT +class Advice { +<> + +} +class AspectJMethodBeforeAdvice +class BeforeAdvice { +<> + +} +class MethodBeforeAdvice { +<> + +} + +AspectJMethodBeforeAdvice ..> Advice +AspectJMethodBeforeAdvice ..> MethodBeforeAdvice +BeforeAdvice --> Advice +MethodBeforeAdvice --> BeforeAdvice +~~~ + + + +### 七、最佳实践 使用`MethodBeforeAdvice`接口。首先，通过创建代理工厂和目标对象，然后创建自定义的前置通知`MyMethodBeforeAdvice`，将其添加到代理工厂中。接着，通过代理工厂获取代理对象，并调用代理对象的方法。在方法调用之前，前置通知会被触发执行，执行自定义的逻辑。 @@ -93,7 +120,7 @@ public class MethodBeforeAdviceDemo { public class MyMethodBeforeAdvice implements MethodBeforeAdvice { @Override public void before(Method method, Object[] args, Object target) throws Throwable { - System.out.println("Before method " + method.getName()); + System.out.println("Before Method " + method.getName()); } } ``` @@ -112,16 +139,6 @@ public class MyService { 运行结果，调用目标方法`foo`之前，`MyMethodBeforeAdvice`中的前置通知被成功触发，并打印了相应的信息。 ```java -Before method foo +Before Method foo foo... ``` - -### 七、常见问题 - -1. **前置通知的执行顺序问题** - - + 当一个类中有多个前置通知时，它们的执行顺序是怎样的？这可能涉及到AOP代理链中各个通知的调用顺序问题。 - -2. **目标方法参数获取** - - + 如何在前置通知中获取目标方法的参数？`before`方法的参数`args`提供了目标方法的参数数组，但如何准确地获取和处理这些参数可能需要进一步的了解。 \ No newline at end of file diff --git a/spring-aop/spring-aop-advice-methodBeforeAdvice/src/main/java/com/xcs/spring/MyMethodBeforeAdvice.java b/spring-aop/spring-aop-advice-methodBeforeAdvice/src/main/java/com/xcs/spring/MyMethodBeforeAdvice.java index bd6694b..1b06dc3 100644 --- a/spring-aop/spring-aop-advice-methodBeforeAdvice/src/main/java/com/xcs/spring/MyMethodBeforeAdvice.java +++ b/spring-aop/spring-aop-advice-methodBeforeAdvice/src/main/java/com/xcs/spring/MyMethodBeforeAdvice.java @@ -7,6 +7,6 @@ import java.lang.reflect.Method; public class MyMethodBeforeAdvice implements MethodBeforeAdvice { @Override public void before(Method method, Object[] args, Object target) throws Throwable { - System.out.println("Before method " + method.getName()); + System.out.println("Before Method " + method.getName()); } } diff --git a/spring-aop/spring-aop-advice-methodInterceptor/README.md b/spring-aop/spring-aop-advice-methodInterceptor/README.md index 7a153b1..a0b3e27 100644 --- a/spring-aop/spring-aop-advice-methodInterceptor/README.md +++ b/spring-aop/spring-aop-advice-methodInterceptor/README.md @@ -1,12 +1,14 @@ ## MethodInterceptor + - [MethodInterceptor](#methodinterceptor) - [一、基本信息](#一基本信息) - [二、基本描述](#二基本描述) - [三、主要功能](#三主要功能) - [四、接口源码](#四接口源码) - [五、主要实现](#五主要实现) - - [六、最佳实践](#六最佳实践) - - [七、常见问题](#七常见问题) + - [六、类关系图](#六类关系图) + - [七、最佳实践](#七最佳实践) + ### 一、基本信息