5f5c0759ce
1. 修改 SysNotification 实体，新增 senderId, senderName, targetType 字段 2. 新增 SendNotificationRequest 请求DTO 3. 扩展通知类型至6种（新增用户通知、课程通知） 4. 实现角色层级权限控制，支持多级管理员通知下级 5. 支持老师群发课程通知给学生 6. 新增批量发送接口和权限配置
78 lines
3.2 KiB
Java
78 lines
3.2 KiB
Java
package art.kexue.sxwz.aspect;
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import com.google.common.cache.Cache;
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import com.google.common.cache.CacheBuilder;
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import art.kexue.sxwz.annotation.PreventDuplicateSubmission;
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import art.kexue.sxwz.exception.BizException;
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import org.aspectj.lang.ProceedingJoinPoint;
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import org.aspectj.lang.annotation.Around;
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import org.aspectj.lang.annotation.Aspect;
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import org.springframework.stereotype.Component;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import jakarta.servlet.http.HttpServletRequest;
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import java.util.concurrent.TimeUnit;
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/**
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* @author 维哥
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* @Description
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* @create 2025-02-25 15:33
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*/
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@Aspect
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@Component
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public class PreventDuplicateSubmissionAspect {
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private static final Cache<String, Long> requestCache = CacheBuilder.newBuilder()
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.expireAfterWrite(1, TimeUnit.MINUTES) // 缓存1分钟
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.build();
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// 处理方法级别注解
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@Around("@annotation(art.kexue.sxwz.annotation.PreventDuplicateSubmission)")
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public Object preventDuplicateSubmissionMethod(ProceedingJoinPoint joinPoint) throws Throwable {
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return preventDuplicateSubmissionImpl(joinPoint);
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}
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// 处理类级别注解
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@Around("@within(art.kexue.sxwz.annotation.PreventDuplicateSubmission)")
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public Object preventDuplicateSubmissionClass(ProceedingJoinPoint joinPoint) throws Throwable {
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return preventDuplicateSubmissionImpl(joinPoint);
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}
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// 实际的防重复提交逻辑
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private Object preventDuplicateSubmissionImpl(ProceedingJoinPoint joinPoint) throws Throwable {
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HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
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String key = generateKey(request, joinPoint.getSignature().toShortString());
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// 从joinPoint获取方法签名和注解
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org.aspectj.lang.reflect.MethodSignature signature = (org.aspectj.lang.reflect.MethodSignature) joinPoint.getSignature();
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// 先从方法上获取注解
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PreventDuplicateSubmission preventDuplicateSubmission = signature.getMethod().getAnnotation(PreventDuplicateSubmission.class);
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// 如果方法上没有，再从类上获取
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if (preventDuplicateSubmission == null) {
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preventDuplicateSubmission = (PreventDuplicateSubmission)signature.getDeclaringType().getAnnotation(PreventDuplicateSubmission.class);
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}
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// 确保注解存在
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if (preventDuplicateSubmission == null) {
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throw new BizException("无法获取PreventDuplicateSubmission注解");
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}
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Long lastRequestTime = requestCache.getIfPresent(key);
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long currentTime = System.currentTimeMillis();
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if (lastRequestTime != null && (currentTime - lastRequestTime) < preventDuplicateSubmission.timeout()) {
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throw new BizException("瞬间操作过于频繁，请稍后再试");
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}
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requestCache.put(key, currentTime);
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return joinPoint.proceed();
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}
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private String generateKey(HttpServletRequest request, String methodSignature) {
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return request.getSession().getId() + ":" + methodSignature;
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}
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}
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