1，编写注解
创建注解FormResubmission类
代码语言：javascript复制@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface FormResubmission {
/**
* Redis过期时间 默认3s
* @return
*/
long expire() default 3;
}2，编写切面实现类
代码语言：javascript复制@Aspect
@Component
public class FormResubmissionAspect {
@Autowired
private RedisService redisService;
@Autowired
private HttpServletRequest request;
@Pointcut("@annotation(com.beibo.annotation.FormResubmission)")
public void pointcut() {
}
@Around("pointcut()")
public Object around(ProceedingJoinPoint point) {
MethodSignature signature = (MethodSignature) point.getSignature();
Method method = signature.getMethod();
String methodName = signature.getName();
FormResubmission formResubmission = method.getAnnotation(FormResubmission.class);
String redisKey = methodName "_" getToken(method);
// 检查表单是否重复提交
checkIsFormResubmit(redisKey);
// 设置表单UUID到Redis
addFormTagToRedis(formResubmission, redisKey);
// 执行方法
Object proceed = null;
try {
proceed = point.proceed();
} catch (Throwable e) {
e.printStackTrace();
}
// 方法执行完毕，从Redis中移除设置的表单UUID
redisService.del(redisKey);
return proceed;
}
private void checkIsFormResubmit(String key) {
if (redisService.hasKey(key)) {
throw new CustomException("请勿重复提交！");
}
}
private void addFormTagToRedis(FormResubmission formResubmission, String redisKey) {
if (formResubmission != null) {
redisService.set(redisKey, IdUtil.simpleUUID(), formResubmission.expire());
}
}
private String getToken(Method method) {
String token = null;
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
token = authentication.getName();
return token;
}
}3，完成
1以上基本满足项目需要，暂时先这样处理。
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