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+# spring-ioc
+
+Example project demonstrating Spring IoC container implementation
+
+## Project Overview
+
+This project demonstrates two configuration approaches for Spring Framework's IoC (Inversion of Control) and DI (Dependency Injection):
+
+1. **Annotation-based** - Configuration using annotations such as `@Configuration`, `@ComponentScan`, `@Autowired`, etc.
+2. **Declarative** - Configuration using an XML file (`applicationContext.xml`) for Bean management
+
+## Project Structure
+
+```
+src/main/java/com/example/ioc/
+├── annotation/          # Annotation-based configuration
+│   ├── config/
+│   │   └── AppConfig.java
+│   ├── controller/
+│   │   └── UserController.java
+│   ├── dao/
+│   │   └── UserDao.java
+│   ├── entity/
+│   │   └── User.java
+│   └── service/
+│       └── UserService.java
+│
+└── declarative/        # Declarative (XML) configuration
+    ├── controller/
+    │   └── UserController.java
+    ├── dao/
+    │   └── UserDao.java
+    ├── entity/
+    │   └── User.java
+    └── service/
+        └── UserService.java
+```
+
+## Technology Stack
+
+- Java
+- Spring Framework
+
+## Quick Start
+
+### Compile the Project
+
+```bash
+mvn clean compile
+```
+
+### Run the Examples
+
+**Annotation-based approach:**
+```bash
+mvn exec:java -Dexec.mainClass="com.example.ioc.annotation.Application"
+```
+
+**Declarative approach:**
+```bash
+mvn exec:java -Dexec.mainClass="com.example.ioc.declarative.Application"
+```
+
+## Feature Overview
+
+The project implements basic user management functionality:
+
+| Operation | Description |
+|----------|-------------|
+| Register User | Create and save a new user |
+| Delete User | Delete a user by ID |
+| Update User | Modify user information |
+| Get Single User | Retrieve a user by ID |
+| Get User List | Retrieve all users |
+
+## Dependency Injection Methods
+
+### Annotation-based Approach
+
+Dependencies are automatically injected using the `@Autowired` annotation:
+
+```java
+@Autowired
+private UserService userService;
+```
+
+### Declarative Approach
+
+Dependencies are injected via setter methods:
+
+```java
+public void setUserService(UserService userService) {
+    this.userService = userService;
+}
+```
+
+And configured in `applicationContext.xml`:
+
+```xml
+```
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+
+
+# spring-ioc
+
+Spring IoC 容器实现示例项目
+
+## 项目简介
+
+本项目演示了 Spring 框架 IoC（控制反转）和 DI（依赖注入）的两种配置方式：
+1. **注解方式** - 使用 `@Configuration`、`@ComponentScan`、`@Autowired` 等注解进行配置
+2. **声明式方式** - 使用 XML 配置文件（`applicationContext.xml`）进行 Bean 管理
+
+## 项目结构
+
+```
+src/main/java/com/example/ioc/
+├── annotation/          # 注解方式配置
+│   ├── config/
+│   │   └── AppConfig.java
+│   ├── controller/
+│   │   └── UserController.java
+│   ├── dao/
+│   │   └── UserDao.java
+│   ├── entity/
+│   │   └── User.java
+│   └── service/
+│       └── UserService.java
+│
+└── declarative/        # 声明式（XML）方式配置
+    ├── controller/
+    │   └── UserController.java
+    ├── dao/
+    │   └── UserDao.java
+    ├── entity/
+    │   └── User.java
+    └── service/
+        └── UserService.java
+```
+
+## 技术栈
+
+- Java
+- Spring Framework
+
+## 快速开始
+
+### 编译项目
+
+```bash
+mvn clean compile
+```
+
+### 运行示例
+
+**注解方式：**
+```bash
+mvn exec:java -Dexec.mainClass="com.example.ioc.annotation.Application"
+```
+
+**声明式方式：**
+```bash
+mvn exec:java -Dexec.mainClass="com.example.ioc.declarative.Application"
+```
+
+## 功能说明
+
+项目实现了基本的用户管理功能：
+
+| 操作 | 说明 |
+|------|------|
+| 注册用户 | 创建新用户并保存 |
+| 删除用户 | 根据 ID 删除用户 |
+| 更新用户 | 修改用户信息 |
+| 查询单个用户 | 根据 ID 获取用户 |
+| 用户列表 | 获取所有用户 |
+
+## 依赖注入方式
+
+### 注解方式
+
+通过 `@Autowired` 注解自动注入依赖：
+
+```java
+@Autowired
+private UserService userService;
+```
+
+### 声明式方式
+
+通过 setter 方法注入依赖：
+
+```java
+public void setUserService(UserService userService) {
+    this.userService = userService;
+}
+```
+
+并在 `applicationContext.xml` 中配置：
+
+```xml