feat: Spring Boot示例项目
- 基础Spring Boot配置 - Docker支持
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likingcode
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package com.example.demo.controller;
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import com.example.demo.aop.PerformanceAspect;
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import com.example.demo.aop.RateLimitAspect;
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import com.example.demo.aop.RateLimited;
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import com.example.demo.event.UserEventPublisher;
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import com.example.demo.model.User;
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import com.example.demo.service.UserService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.web.bind.annotation.*;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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/**
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* AOP 和事件机制学习控制器
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*/
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@RestController
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@RequestMapping("/aop")
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public class AopEventController {
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@Autowired
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private UserService userService;
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@Autowired
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private UserEventPublisher eventPublisher;
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@Autowired
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private PerformanceAspect performanceAspect;
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@Autowired
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private RateLimitAspect rateLimitAspect;
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/**
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* 学习首页
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*/
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@GetMapping
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public Map<String, Object> index() {
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Map<String, Object> info = new HashMap<>();
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info.put("message", "Spring Boot 学习中心");
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info.put("topics", new String[]{
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"AOP 切面编程",
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"事件机制",
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"Bean 生命周期"
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});
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info.put("endpoints", new String[]{
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"GET /aop - AOP 概念说明",
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"GET /aop/stats - 性能统计",
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"GET /aop/event - 事件机制说明",
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"POST /aop/event/publish - 发布用户事件",
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"GET /aop/event/history - 查看事件历史",
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"GET /aop/ratelimit - 限流测试"
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});
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return info;
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}
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// ==================== AOP 示例 ====================
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/**
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* AOP 概念说明
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*/
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@GetMapping("/aop")
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public Map<String, Object> aopInfo() {
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Map<String, Object> info = new HashMap<>();
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info.put("title", "AOP 切面编程");
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info.put("concepts", new String[]{
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"Aspect（切面）: 横切关注点的模块化",
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"JoinPoint（连接点）: 程序执行的某个点",
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"Pointcut（切入点）: 匹配连接点的表达式",
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"Advice（通知）: 在连接点执行的动作",
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"Weaving（织入）: 将切面应用到目标对象"
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});
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info.put("adviceTypes", new String[]{
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"@Before - 方法执行前",
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"@After - 方法执行后（无论成功或异常）",
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"@AfterReturning - 方法成功返回后",
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"@AfterThrowing - 方法抛出异常后",
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"@Around - 环绕通知（最强大）"
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});
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info.put("useCases", new String[]{
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"日志记录",
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"性能监控",
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"事务管理",
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"权限检查",
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"限流控制"
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});
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return info;
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}
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/**
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* 查看性能统计
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*/
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@GetMapping("/aop/stats")
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public Map<String, Object> getPerformanceStats() {
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Map<String, Object> result = new HashMap<>();
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result.put("title", "方法性能统计");
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result.put("description", "由 PerformanceAspect 自动收集");
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result.put("statistics", performanceAspect.getStatistics());
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return result;
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}
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// ==================== 事件机制示例 ====================
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/**
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* 事件机制说明
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*/
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@GetMapping("/event")
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public Map<String, Object> eventInfo() {
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Map<String, Object> info = new HashMap<>();
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info.put("title", "Spring 事件机制");
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info.put("concepts", new String[]{
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"ApplicationEventPublisher - 事件发布者",
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"@EventListener - 事件监听器",
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"@Async - 异步处理事件",
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"condition - 条件过滤"
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});
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info.put("benefits", new String[]{
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"解耦：发布者和监听者互不依赖",
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"扩展：新增监听器无需修改发布者",
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"异步：耗时操作不阻塞主流程",
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"测试：更容易进行单元测试"
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});
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info.put("eventTypes", new String[]{
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"CREATED - 用户创建",
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"UPDATED - 用户更新",
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"DELETED - 用户删除",
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"LOGIN - 用户登录"
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});
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return info;
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}
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/**
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* 发布用户事件
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*/
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@PostMapping("/event/publish")
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public Map<String, Object> publishEvent(
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@RequestParam Long userId,
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@RequestParam String userName,
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@RequestParam(defaultValue = "LOGIN") String eventType
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) {
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eventPublisher.publishUserLogin(userId, userName);
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Map<String, Object> result = new HashMap<>();
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result.put("message", "事件已发布");
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result.put("eventType", eventType);
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result.put("userId", userId);
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result.put("userName", userName);
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return result;
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}
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/**
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* 查看事件历史
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*/
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@GetMapping("/event/history")
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public Map<String, Object> getEventHistory() {
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Map<String, Object> result = new HashMap<>();
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result.put("title", "事件历史记录");
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result.put("note", "由 UserEventListener 自动记录");
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return result;
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}
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// ==================== 限流示例 ====================
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/**
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* 限流测试接口
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*/
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@GetMapping("/ratelimit")
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@RateLimited(value = 10, message = "测试限流：每分钟最多10次")
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public Map<String, Object> testRateLimit() {
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Map<String, Object> result = new HashMap<>();
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result.put("message", "请求成功");
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result.put("note", "使用 @RateLimited 注解");
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result.put("rateLimitStatus", rateLimitAspect.getRateLimitStatus());
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return result;
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}
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}
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