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在SpringBoot项目中实现切面执行链功能-CSDN博客
1.定义防重复提交handler
/*** 重复提交handler**/
AspectHandlerOrder
public class …本功能是在切面执行链基础上实现的功能如果不知道切面执行链的同学请看一下我之前专门介绍切面执行链的文章。
在SpringBoot项目中实现切面执行链功能-CSDN博客
1.定义防重复提交handler
/*** 重复提交handler**/
AspectHandlerOrder
public class ResubmitAspectHandler implements AspectHandler {private StringRedisTemplate stringRedisTemplate;public void setStringRedisTemplate(StringRedisTemplate stringRedisTemplate) {this.stringRedisTemplate stringRedisTemplate;}Overridepublic boolean execute(ProceedingJoinPoint pjp) throws Exception {Method method getMethod(pjp);if (!method.isAnnotationPresent(Resubmit.class)) {return true;}Resubmit annotation method.getAnnotation(Resubmit.class);long ttl annotation.ttl();String key getKey();String value 1;if (lock(key, value, ttl)) {return true;} throw new BaseRuntimeException(ExceptionEnums.ERROR_10012.getCode(), 操作频率过高请稍后再试);}Overridepublic void afterCompletion(ProceedingJoinPoint pjp, Object response, Exception exception) {Method method getMethod(pjp);if (method.isAnnotationPresent(Resubmit.class)) {unlock(getKey());}}/*** redis原子操作如果key不存在就设置key:value** param key* param value* return true设置成功拿到锁false设置失败未拿到锁*/private boolean lock(final String key, final String value, final long ttl) {Boolean result stringRedisTemplate.boundValueOps(key).setIfAbsent(value, Duration.ofSeconds(ttl));return result ! null ? result : false;}/*** 解锁删除key** param key*/private void unlock(String key) {if (StringUtils.isNotBlank(key)) {stringRedisTemplate.delete(key);}}/*** 获取方法** param pjp* return*/private Method getMethod(ProceedingJoinPoint pjp) {MethodSignature signature (MethodSignature) pjp.getSignature();Method method signature.getMethod();return method;}/*** 获取key** return*/private String getKey() {ServletRequestAttributes requestAttributes (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();HttpServletRequest request requestAttributes.getRequest();String url request.getRequestURI();String httpMethod request.getMethod();HttpHeader httpHeader WebContext.getHttpHeader();String deviceId httpHeader.getDevice_id();String key RedisConstants.REDIS_RESUBMIT_KEY httpMethod url : deviceId;return key;}
}
2.定义防重复提交注解
/*** 防止重复提交*/
Retention(RetentionPolicy.RUNTIME)
Target(ElementType.METHOD)
public interface Resubmit {/*** 存活时间秒当意外情况例如锁定之后重启服务* 未能执行解锁功能redis将在${ttl}秒之后自动删除锁标志* 默认 10秒* return*/long ttl() default 10;}
3.在配置类中注入防重复提交切面类
Bean
public ListAspectHandler apiAspectHandlers() {ResubmitAspectHandler resubmitAspectHandler new ResubmitAspectHandler();resubmitAspectHandler.setStringRedisTemplate(stringRedisTemplate);return Arrays.asList(resubmitAspectHandler);
}
4.controller中应用防重复提交注解
PostMapping(/release)
Resubmit
public ApiResponse? insert(RequestBody Valid InsertAppRequestDTO req) {// 处理业务逻辑
}
