示例工程文档【免费下载链接】spring-reading涵盖了 Spring 框架的核心概念和关键功能包括控制反转IOC容器的使用面向切面编程AOP的原理与实践事务管理的方式与实现Spring MVC 的流程与控制器工作机制以及 Spring 中数据访问、安全、Boot 自动配置等方面的深入研究。此外它还包含了 Spring 事件机制的应用、高级主题如缓存抽象和响应式编程以及对 Spring 源码的编程风格与设计模式的深入探讨。项目地址https://gitcode.com/GitHub_Trending/sp/spring-reading点击查看免费下载MetadataAwareAspectInstanceFactory是 Spring AOP 中负责实例化 AspectJ 注解切面并携带其元数据的核心接口。本文以 spring-reading 仓库中的spring-aop-metadataAwareAspectInstanceFactory模块为骨架完整讲解该接口的定义、五大实现类的行为差异单例、原型、懒加载等、可运行的实战示例并结合仓库源码与关联模块AspectInstanceFactory、AspectJAdvisorFactory逐层剖析其底层设计动机与调用关系帮助读者彻底理解注解式 AOP 中切面从哪来、元数据怎么用、互斥锁为何存在这一关键链路。一、为什么需要 MetadataAwareAspectInstanceFactory在 Spring 使用 AspectJ 注解风格Aspect、Before、After等实现 AOP 时框架需要做两件事一是拿到切面实例以调用其中的通知方法二是拿到切面的元数据如切面名称、切面类、perClause切点以便解析注解、生成 Advisor。AspectInstanceFactory接口只负责前者getAspectInstance()与getAspectClassLoader()而MetadataAwareAspectInstanceFactory在其基础上增加了元数据能力。为什么要把带元数据的工厂单独拆成一个子接口Spring 源码中的注释给出了明确理由理想情况下AspectInstanceFactory本身就应该包含元数据方法但由于AspectMetadata使用了 Java 5 专属的org.aspectj.lang.reflect.AjType为了保持接口对低版本 Java 的兼容必须将其拆分到子接口中参见 spring-aop-aspectInstanceFactory 模块 README 中对父接口的介绍。二、接口源码两个核心方法的语义MetadataAwareAspectInstanceFactory接口本身非常精简只定义了两个方法源码如下与模块 README 中的接口源码一致public interface MetadataAwareAspectInstanceFactory extends AspectInstanceFactory { /** * 返回此工厂的切面的 AspectJ AspectMetadata。 * return 切面元数据 */ AspectMetadata getAspectMetadata(); /** * 返回此工厂的最佳创建互斥锁。 * return 互斥锁对象如果不需要使用锁则可能为 {code null} * since 4.3 */ Nullable Object getAspectCreationMutex(); }getAspectMetadata()返回与 AspectJ 注解类关联的AspectMetadata对象。该对象封装了切面名称aspectName、切面类aspectClass以及perClause切点perClausePointcut是AspectJAdvisorFactory解析通知、构建 Advisor 时的重要输入。getAspectCreationMutex()返回创建切面实例时的互斥锁。注意返回值可以是null——当底层容器如单例 Bean 工厂本身已经保证了线程安全的单例语义时就不需要额外的本地锁Spring 4.3 起引入该方法的说明见接口注释。由于AspectInstanceFactory还继承了Ordered接口所有MetadataAwareAspectInstanceFactory实现类都会提供getOrder()来参与通知链的排序。三、五大实现类行为差异一览模块 README 归纳了该接口的五个主要实现类它们代表了切面实例的四种典型生命周期管理策略实现类实例化策略与 Spring 容器关系典型应用场景SimpleMetadataAwareAspectInstanceFactory每次调用都新建实例原型无依赖基于反射脱离容器、轻量级的切面元数据实验SingletonMetadataAwareAspectInstanceFactory固定单例持有外部传入的单例对象由容器外代码维护的固定切面实例BeanFactoryAspectInstanceFactory由 BeanFactory 决定单例/原型与BeanFactory深度集成切面作为 Spring Bean支持依赖注入与容器生命周期PrototypeAspectInstanceFactory原型每次新实例继承BeanFactoryAspectInstanceFactory需要每次使用都重建实例的场景Spring 内部用于 LTW 场景LazySingletonAspectInstanceFactoryDecorator懒加载单例装饰器包装任意 MetadataAware 工厂推迟切面实例化、保证只实例化一次其中PrototypeAspectInstanceFactory在类关系图中继承自BeanFactoryAspectInstanceFactory见下文类关系图它把 bean 视为原型作用域每次getAspectInstance()都会向 BeanFactory 重新获取SimpleMetadataAwareAspectInstanceFactory与SingletonMetadataAwareAspectInstanceFactory则分别继承自父接口模块中的SimpleAspectInstanceFactory与SingletonAspectInstanceFactory两者的行为对比可参考 spring-aop-aspectInstanceFactory 模块 中的运行结果。类关系图模块 README 原文classDiagram direction BT class AspectInstanceFactory { Interface } class BeanFactoryAspectInstanceFactory class LazySingletonAspectInstanceFactoryDecorator class MetadataAwareAspectInstanceFactory { Interface } class PrototypeAspectInstanceFactory class SimpleAspectInstanceFactory class SimpleMetadataAwareAspectInstanceFactory class SingletonAspectInstanceFactory class SingletonMetadataAwareAspectInstanceFactory BeanFactoryAspectInstanceFactory .. MetadataAwareAspectInstanceFactory LazySingletonAspectInstanceFactoryDecorator .. MetadataAwareAspectInstanceFactory MetadataAwareAspectInstanceFactory -- AspectInstanceFactory PrototypeAspectInstanceFactory -- BeanFactoryAspectInstanceFactory SimpleAspectInstanceFactory .. AspectInstanceFactory SimpleMetadataAwareAspectInstanceFactory .. MetadataAwareAspectInstanceFactory SimpleMetadataAwareAspectInstanceFactory -- SimpleAspectInstanceFactory SingletonAspectInstanceFactory .. AspectInstanceFactory SingletonMetadataAwareAspectInstanceFactory .. MetadataAwareAspectInstanceFactory SingletonMetadataAwareAspectInstanceFactory -- SingletonAspectInstanceFactory从图中可以清晰看出MetadataAwareAspectInstanceFactory是AspectInstanceFactory的元数据扩展而简单单例与元数据单例之间、BeanFactory 工厂与懒加载装饰器之间分别构成了继承与组合关系。四、最佳实践仓库内可运行的完整示例模块的实战代码位于 MetadataAwareAspectInstanceFactoryDemo.java配套的切面类 MyAspect.java 是一个只带有Aspect注解、未声明任何通知方法的空切面package com.xcs.spring; import org.aspectj.lang.annotation.Aspect; Aspect class MyAspect { }主程序依次演示了四类工厂的行为先分别用SimpleMetadataAwareAspectInstanceFactory与SingletonMetadataAwareAspectInstanceFactory创建单例/非单例切面再用DefaultListableBeanFactory注册名为myAspect的单例 Bean 并交给BeanFactoryAspectInstanceFactory托管最后用LazySingletonAspectInstanceFactoryDecorator包装前者实现懒加载。每一步都同时输出切面实例与AspectMetadata信息public class MetadataAwareAspectInstanceFactoryDemo { public static void main(String[] args) { // 使用 SimpleMetadataAwareAspectInstanceFactory 实例化切面 SimpleMetadataAwareAspectInstanceFactory simpleMetadataAwareAif new SimpleMetadataAwareAspectInstanceFactory(MyAspect.class, myAspect); System.out.println(SimpleMetadataAwareAspectInstanceFactory (1) simpleMetadataAwareAif.getAspectInstance()); System.out.println(SimpleMetadataAwareAspectInstanceFactory (2) simpleMetadataAwareAif.getAspectInstance()); System.out.println(SimpleMetadataAwareAspectInstanceFactory AspectMetadata JSONUtil.toJsonStr(simpleMetadataAwareAif.getAspectMetadata())); System.out.println(); // 使用 SingletonMetadataAwareAspectInstanceFactory 实例化切面 SingletonMetadataAwareAspectInstanceFactory singletonMetadataAwareAif new SingletonMetadataAwareAspectInstanceFactory(new MyAspect(), myAspect); System.out.println(SingletonMetadataAwareAspectInstanceFactory (1) singletonMetadataAwareAif.getAspectInstance()); System.out.println(SingletonMetadataAwareAspectInstanceFactory (2) singletonMetadataAwareAif.getAspectInstance()); System.out.println(SimpleMetadataAwareAspectInstanceFactory AspectMetadata JSONUtil.toJsonStr(singletonMetadataAwareAif.getAspectMetadata())); System.out.println(); // 使用 BeanFactoryAspectInstanceFactory 实例化切面 DefaultListableBeanFactory beanFactory new DefaultListableBeanFactory(); beanFactory.registerSingleton(myAspect, new MyAspect()); BeanFactoryAspectInstanceFactory banFactoryAif new BeanFactoryAspectInstanceFactory(beanFactory, myAspect); System.out.println(BeanFactoryAspectInstanceFactory (1) banFactoryAif.getAspectInstance()); System.out.println(BeanFactoryAspectInstanceFactory (2) banFactoryAif.getAspectInstance()); System.out.println(SimpleMetadataAwareAspectInstanceFactory AspectMetadata JSONUtil.toJsonStr(banFactoryAif.getAspectMetadata())); System.out.println(); // 使用 LazySingletonAspectInstanceFactoryDecorator 实例化切面 LazySingletonAspectInstanceFactoryDecorator lazySingletonAifD new LazySingletonAspectInstanceFactoryDecorator(banFactoryAif); System.out.println(LazySingletonAspectInstanceFactoryDecorator (1) lazySingletonAifD.getAspectInstance()); System.out.println(LazySingletonAspectInstanceFactoryDecorator (2) lazySingletonAifD.getAspectInstance()); System.out.println(LazySingletonAspectInstanceFactoryDecorator AspectCreationMutex lazySingletonAifD.getAspectCreationMutex()); System.out.println(LazySingletonAspectInstanceFactoryDecorator AspectMetadata JSONUtil.toJsonStr(lazySingletonAifD.getAspectMetadata())); System.out.println(); } }运行结果模块 README 原文展示了各类工厂的实例化语义差异SimpleMetadataAwareAspectInstanceFactory (1) com.xcs.spring.MyAspect5f341870 SimpleMetadataAwareAspectInstanceFactory (2) com.xcs.spring.MyAspect553f17c SimpleMetadataAwareAspectInstanceFactory AspectMetadata {aspectName:myAspect,aspectClass:com.xcs.spring.MyAspect,perClausePointcut:{}} SingletonMetadataAwareAspectInstanceFactory (1) com.xcs.spring.MyAspect1da51a35 SingletonMetadataAwareAspectInstanceFactory (2) com.xcs.spring.MyAspect1da51a35 SimpleMetadataAwareAspectInstanceFactory AspectMetadata {aspectName:myAspect,aspectClass:com.xcs.spring.MyAspect,perClausePointcut:{}} BeanFactoryAspectInstanceFactory (1) com.xcs.spring.MyAspect6646153 BeanFactoryAspectInstanceFactory (2) com.xcs.spring.MyAspect6646153 SimpleMetadataAwareAspectInstanceFactory AspectMetadata {aspectName:myAspect,aspectClass:com.xcs.spring.MyAspect,perClausePointcut:{}} LazySingletonAspectInstanceFactoryDecorator (1) com.xcs.spring.MyAspect6646153 LazySingletonAspectInstanceFactoryDecorator (2) com.xcs.spring.MyAspect6646153 LazySingletonAspectInstanceFactoryDecorator AspectCreationMutex null LazySingletonAspectInstanceFactoryDecorator AspectMetadata {aspectName:myAspect,aspectClass:com.xcs.spring.MyAspect,perClausePointcut:{}}结果解读SimpleMetadataAwareAspectInstanceFactory两次输出的对象引用5f341870与553f17c不同说明每次调用getAspectInstance()都会通过反射新建实例——这是原型行为。SingletonMetadataAwareAspectInstanceFactory两次输出完全一致1da51a35因为它内部持有构造时传入的单例对象。BeanFactoryAspectInstanceFactory两次结果一致6646153因为示例中通过registerSingleton注册的是单例 Bean实例化语义完全由 BeanFactory 的 bean 作用域决定。LazySingletonAspectInstanceFactoryDecorator包装的是同一个BeanFactoryAspectInstanceFactory因此实例引用与之一致同时AspectCreationMutex返回null——因为底层 BeanFactory 已确认该 bean 为单例无需本地锁这正是getAspectCreationMutex()返回值可为null的活例子。注意示例中所有工厂输出的AspectMetadata均为{aspectName:myAspect,aspectClass:com.xcs.spring.MyAspect,perClausePointcut:{}}因为MyAspect未声明任何perthis/pertarget子句元数据中的perClausePointcut为空对象。依赖方面模块 pom.xml 引入了cn.hutool:hutool-json:5.8.27用于将AspectMetadata序列化为 JSON 输出。五、源码分析四个关键实现逐个拆解5.1 SimpleMetadataAwareAspectInstanceFactory——最朴素的每次新建工厂该类继承SimpleAspectInstanceFactory后者每次调用通过ReflectionUtils.accessibleConstructor(...).newInstance()反射新建实例构造时传入切面类与切面名称并立即构建AspectMetadata。核心源码如下public class SimpleMetadataAwareAspectInstanceFactory extends SimpleAspectInstanceFactory implements MetadataAwareAspectInstanceFactory { private final AspectMetadata metadata; // 切面的元数据信息 public SimpleMetadataAwareAspectInstanceFactory(Class? aspectClass, String aspectName) { super(aspectClass); this.metadata new AspectMetadata(aspectClass, aspectName); // 创建切面的元数据信息 } Override public final AspectMetadata getAspectMetadata() { return this.metadata; } Override public Object getAspectCreationMutex() { return this; // 没有外部容器保证线程安全用工厂自身作为互斥锁 } Override protected int getOrderForAspectClass(Class? aspectClass) { return OrderUtils.getOrder(aspectClass, Ordered.LOWEST_PRECEDENCE); // 未标注 Order 时默认最低优先级 } }两个值得注意的实现细节getAspectCreationMutex()返回this由于该类每次创建新实例、本身不保证单例语义多线程环境下若需要做每线程一个实例之外的保护Spring 用工厂对象自身充当锁保证同一工厂上并发实例化的安全性。getOrderForAspectClass()委托OrderUtils.getOrder切面顺序优先读取类上的Order注解缺省回退到Ordered.LOWEST_PRECEDENCE即Integer.MAX_VALUE最低优先级。5.2 SingletonMetadataAwareAspectInstanceFactory——持有外部单例对象与上一个实现不同该类构造参数直接传入切面实例对象而非切面类元数据从aspectInstance.getClass()推导且实现了Serializable支持序列化。核心源码如下SuppressWarnings(serial) public class SingletonMetadataAwareAspectInstanceFactory extends SingletonAspectInstanceFactory implements MetadataAwareAspectInstanceFactory, Serializable { private final AspectMetadata metadata; // 切面的元数据信息 public SingletonMetadataAwareAspectInstanceFactory(Object aspectInstance, String aspectName) { super(aspectInstance); // 调用父类的构造方法传入切面的单例实例 this.metadata new AspectMetadata(aspectInstance.getClass(), aspectName); // 创建切面的元数据信息 } Override public final AspectMetadata getAspectMetadata() { return this.metadata; } Override public Object getAspectCreationMutex() { return this; // 单例由外部保证但 Spring 仍用工厂自身作为本地互斥锁 } Override protected int getOrderForAspectClass(Class? aspectClass) { return OrderUtils.getOrder(aspectClass, Ordered.LOWEST_PRECEDENCE); } }其父类SingletonAspectInstanceFactory.getOrder()会优先检查实例是否实现Ordered接口若实现则直接返回((Ordered) aspectInstance).getOrder()否则才回退到getOrderForAspectClass详见 spring-aop-aspectInstanceFactory 模块 的源码分析部分。所以此类对顺序的判定是实例级 Ordered 优先、类级 Order 次之、默认最低优先级兜底。5.3 BeanFactoryAspectInstanceFactory——与容器深度集成的工厂这是实际生产中使用最频繁的实现切面被注册为 Spring Bean工厂通过 bean 名称从BeanFactory获取实例天然支持依赖注入、作用域管理与容器级单例锁。关键源码如下SuppressWarnings(serial) public class BeanFactoryAspectInstanceFactory implements MetadataAwareAspectInstanceFactory, Serializable { private final BeanFactory beanFactory; // Bean 工厂 private final String name; // Bean 名称 private final AspectMetadata aspectMetadata; // 切面的元数据信息 public BeanFactoryAspectInstanceFactory(BeanFactory beanFactory, String name, Nullable Class? type) { Assert.notNull(beanFactory, BeanFactory must not be null); Assert.notNull(name, Bean name must not be null); this.beanFactory beanFactory; this.name name; Class? resolvedType type; if (type null) { resolvedType beanFactory.getType(name); // 通过 BeanFactory 解析类型 Assert.notNull(resolvedType, Unresolvable bean type - explicitly specify the aspect class); } this.aspectMetadata new AspectMetadata(resolvedType, name); // 创建切面的元数据信息 } Override public Object getAspectInstance() { return this.beanFactory.getBean(this.name); // 实例化语义完全交给容器 } Override Nullable public ClassLoader getAspectClassLoader() { return (this.beanFactory instanceof ConfigurableBeanFactory ? ((ConfigurableBeanFactory) this.beanFactory).getBeanClassLoader() : ClassUtils.getDefaultClassLoader()); } Override public AspectMetadata getAspectMetadata() { return this.aspectMetadata; } Override Nullable public Object getAspectCreationMutex() { if (this.beanFactory.isSingleton(this.name)) { // 依赖于工厂提供的单例语义 - 没有本地锁。 return null; } else if (this.beanFactory instanceof ConfigurableBeanFactory) { // 从工厂中没有单例保证 - 让我们本地锁定但重用工厂的单例锁 return ((ConfigurableBeanFactory) this.beanFactory).getSingletonMutex(); } else { return this; } } Override public int getOrder() { Class? type this.beanFactory.getType(this.name); if (type ! null) { if (Ordered.class.isAssignableFrom(type) this.beanFactory.isSingleton(this.name)) { return ((Ordered) this.beanFactory.getBean(this.name)).getOrder(); } return OrderUtils.getOrder(type, Ordered.LOWEST_PRECEDENCE); } return Ordered.LOWEST_PRECEDENCE; } }该实现有三个设计亮点元数据类型的三级解析构造函数支持显式传入type适用于 BeanFactory 返回 CGLIB 子类、希望按超类解析元数据的场景不传则通过beanFactory.getType(name)解析若类型不可解析则直接抛出Assert异常提示调用方显式指定切面类。互斥锁的精细化选择getAspectCreationMutex()做了三分支判断——bean 为单例时返回null信任容器单例语义无需本地锁非单例但 BeanFactory 可配置时返回ConfigurableBeanFactory.getSingletonMutex()复用容器全局单例锁避免通知 bean 的惰性依赖隐式触发单例锁造成死锁否则退回工厂自身。顺序判断兼顾实例与类bean 类型实现Ordered且为单例时取实例顺序否则取类级Order最后兜底LOWEST_PRECEDENCE。注意模块源码注释特别提醒若切面 bean 是原型作用域BeanFactoryAspectInstanceFactory可能多次实例化导致与预期不符的语义官方建议用LazySingletonAspectInstanceFactoryDecorator包装确保只返回一个切面。5.4 LazySingletonAspectInstanceFactoryDecorator——保证只实例化一次的装饰器该类本身不负责创建实例而是包装任意MetadataAwareAspectInstanceFactory通过首次调用时实例化、后续复用的方式把非单例工厂装饰成单例且利用互斥锁 双重检查double-checked locking保证多线程下只实例化一次。核心源码如下SuppressWarnings(serial) public class LazySingletonAspectInstanceFactoryDecorator implements MetadataAwareAspectInstanceFactory, Serializable { private final MetadataAwareAspectInstanceFactory maaif; // 要装饰的 MetadataAwareAspectInstanceFactory 实例 Nullable private volatile Object materialized; // 实例化的对象 public LazySingletonAspectInstanceFactoryDecorator(MetadataAwareAspectInstanceFactory maaif) { Assert.notNull(maaif, AspectInstanceFactory must not be null); this.maaif maaif; } Override public Object getAspectInstance() { Object aspectInstance this.materialized; if (aspectInstance null) { Object mutex this.maaif.getAspectCreationMutex(); if (mutex null) { // 无互斥锁直接实例化并赋值底层已保证线程安全 aspectInstance this.maaif.getAspectInstance(); this.materialized aspectInstance; } else { synchronized (mutex) { aspectInstance this.materialized; if (aspectInstance null) { // 双重检查在锁内部只实例化一次 aspectInstance this.maaif.getAspectInstance(); this.materialized aspectInstance; } } } } return aspectInstance; } public boolean isMaterialized() { return (this.materialized ! null); } Override Nullable public ClassLoader getAspectClassLoader() { return this.maaif.getAspectClassLoader(); } Override public AspectMetadata getAspectMetadata() { return this.maaif.getAspectMetadata(); } Override Nullable public Object getAspectCreationMutex() { return this.maaif.getAspectCreationMutex(); } Override public int getOrder() { return this.maaif.getOrder(); } }实现要点materialized字段使用volatile修饰配合无锁路径下的直接赋值与加锁路径下的双重检查兼顾性能与线程安全。互斥锁来源完全透明取被装饰工厂的getAspectCreationMutex()。若底层工厂返回null如被装饰者是单例 bean 的BeanFactoryAspectInstanceFactory则跳过加锁直接实例化——与前面示例中AspectCreationMutex null的输出完全对应。其余方法getAspectMetadata、getOrder、getAspectClassLoader均为透传委托装饰器只改变实例化时机与次数语义。六、在 Spring AOP 中的真实调用位置Advisor 构建链路理解了接口之后一个自然的问题是MetadataAwareAspectInstanceFactory到底在框架哪里被使用答案是AspectJ 注解切面 → Advisor 的转换环节。在ReflectiveAspectJAdvisorFactory.getAdvisors(MetadataAwareAspectInstanceFactory)中详见 spring-aop-aspectJAdvisorFactory 模块 的源码分析从aspectInstanceFactory.getAspectMetadata()取出切面类与切面名称并validate(aspectClass)校验切面合法性将传入的工厂包装成LazySingletonAspectInstanceFactoryDecorator——这是为了让只实例化一次的语义贯穿 Advisor 构建全过程切面工厂会先于 Advice 实例化且同一切面会为每个通知方法各建一个 Advisor若不装饰则可能产生多个切面实例遍历切面类中的通知方法调用getAdvisor(method, lazySingletonAspectInstanceFactory, 0, aspectName)为每个通知方法构建InstantiationModelAwarePointcutAdvisorImpl若切面是perthis/pertarget的懒实例化类型还会在最前面追加SyntheticInstantiationAdvisor触发实例化。而在InstantiationModelAwarePointcutAdvisorImpl的构造过程中同样会调用aspectInstanceFactory.getAspectMetadata().isLazilyInstantiated()判断是否为懒实例化切面进而决定使用声明切点 perClause 切点联合的动态切点模型还是直接使用声明切点并立即实例化 Advice。由此可见MetadataAwareAspectInstanceFactory的元数据能力尤其是AspectMetadata中的perClausePointcut与isLazilyInstantiated直接决定了 Advisor 的切点模型与实例化时机是整个注解式 AOP 装配链路的地基。在更上层的BeanFactoryAspectJAdvisorsBuilder见 spring-aop-beanFactoryAspectJAdvisorsBuilder 模块中Spring 扫描到Aspectbean 后正是以BeanFactoryAspectInstanceFactory或按需包装的懒加载装饰器作为参数调用aspectJAdvisorFactory.getAdvisors(...)从而把容器中的切面 Bean 转化为可参与代理的 Advisor 集合。七、小结与延伸阅读MetadataAwareAspectInstanceFactory用两个方法getAspectMetadatagetAspectCreationMutex为 Spring 的注解式 AOP 提供了一条清晰的分工线元数据驱动 Advisor 的构建与切点模型选择互斥锁保证切面实例化在复杂容器语义下依然线程安全且只实例化一次五种实现则覆盖了从纯反射原型、外部单例、容器托管到懒加载装饰的全部生命周期策略。想要继续深入这一主题推荐按以下顺序阅读仓库中的关联模块spring-aop/spring-aop-aspectInstanceFactory/README.md——父接口AspectInstanceFactory的定义与三个基础实现spring-aop/spring-aop-aspectJAdvisorFactory/README.md——ReflectiveAspectJAdvisorFactory如何消费本接口的元数据生成 Advisor 与 Advicespring-aop/spring-aop-beanFactoryAspectJAdvisorsBuilder/README.md——Spring 容器中Aspectbean 到 Advisor 的完整扫描与转换流程。同时本文涉及的运行示例与源码均可直接在spring-aop/spring-aop-metadataAwareAspectInstanceFactory模块下查看示例入口、切面定义该模块是spring-aop聚合工程见 spring-aop/pom.xml 中的 module 列表的 21 个 AOP 子模块之一通过 Maven 构建后即可运行 Demo 观察各工厂的实际行为。赞分享示例工程文档【免费下载链接】spring-reading涵盖了 Spring 框架的核心概念和关键功能包括控制反转IOC容器的使用面向切面编程AOP的原理与实践事务管理的方式与实现Spring MVC 的流程与控制器工作机制以及 Spring 中数据访问、安全、Boot 自动配置等方面的深入研究。此外它还包含了 Spring 事件机制的应用、高级主题如缓存抽象和响应式编程以及对 Spring 源码的编程风格与设计模式的深入探讨。项目地址https://gitcode.com/GitHub_Trending/sp/spring-reading点击查看免费下载相关推荐GitHub_Trending/sp/spring-reading源码分析Spring AOP切面优先级GitHub_Trending/sp/spring reading源码分析Spring AOP切面优先级 1. 切面优先级的核心价值与问题场景 在复杂业务系统示例工程文档GitHub_Trending/sp/spring-reading源码解析Spring AOP增强器实现GitHub_Trending/sp/spring reading源码解析Spring AOP增强器实现 1. Spring AOP增强器核心架构 Sprin示例工程文档Interview_DS_Algo 前缀树Trie专题从基础实现到 16 道高频面试题的 C 全解析Interview_DS_Algo 前缀树Trie专题从基础实现到 16 道高频面试题的 C 全解析 本篇技术指南以 Interview_DS_Alg示例工程文档上一篇Optimism check-prestate 工具指南为绝对 prestate 哈希生成链配置状态报告下一篇Baserow MCP 端点手动测试全指南从连接客户端到验证工具清单创作声明：本文部分内容由AI辅助生成（AIGC），仅供参考