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@@ -0,0 +1,147 @@
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+package com.ruoyi.common.idempotent.aspectj;
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+
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+import cn.dev33.satoken.SaManager;
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+import cn.hutool.core.util.ObjectUtil;
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+import cn.hutool.crypto.SecureUtil;
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+import com.ruoyi.common.core.constant.Constants;
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+import com.ruoyi.common.core.domain.R;
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+import com.ruoyi.common.core.exception.ServiceException;
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+import com.ruoyi.common.core.utils.JsonUtils;
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+import com.ruoyi.common.core.utils.MessageUtils;
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+import com.ruoyi.common.core.utils.ServletUtils;
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+import com.ruoyi.common.core.utils.StringUtils;
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+import com.ruoyi.common.idempotent.annotation.RepeatSubmit;
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+import com.ruoyi.common.redis.utils.RedisUtils;
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+import org.aspectj.lang.JoinPoint;
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+import org.aspectj.lang.annotation.AfterReturning;
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+import org.aspectj.lang.annotation.AfterThrowing;
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+import org.aspectj.lang.annotation.Aspect;
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+import org.aspectj.lang.annotation.Before;
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+import org.springframework.validation.BindingResult;
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+import org.springframework.web.multipart.MultipartFile;
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+
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+import javax.servlet.http.HttpServletRequest;
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+import javax.servlet.http.HttpServletResponse;
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+import java.util.Collection;
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+import java.util.Map;
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+import java.util.concurrent.TimeUnit;
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+
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+/**
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+ * 防止重复提交(参考美团GTIS防重系统)
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+ *
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+ * @author Lion Li
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+ */
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+@Aspect
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+public class RepeatSubmitAspect {
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+
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+ private static final ThreadLocal<String> KEY_CACHE = new ThreadLocal<>();
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+
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+ @Before("@annotation(repeatSubmit)")
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+ public void doBefore(JoinPoint point, RepeatSubmit repeatSubmit) throws Throwable {
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+ // 如果注解不为0 则使用注解数值
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+ long interval = repeatSubmit.timeUnit().toMillis(repeatSubmit.interval());
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+
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+ if (interval < 1000) {
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+ throw new ServiceException("重复提交间隔时间不能小于'1'秒");
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+ }
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+ HttpServletRequest request = ServletUtils.getRequest();
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+ String nowParams = argsArrayToString(point.getArgs());
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+
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+ // 请求地址(作为存放cache的key值)
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+ String url = request.getRequestURI();
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+
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+ // 唯一值(没有消息头则使用请求地址)
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+ String submitKey = StringUtils.trimToEmpty(request.getHeader(SaManager.getConfig().getTokenName()));
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+
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+ submitKey = SecureUtil.md5(submitKey + ":" + nowParams);
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+ // 唯一标识(指定key + url + 消息头)
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+ String cacheRepeatKey = Constants.REPEAT_SUBMIT_KEY + url + submitKey;
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+ String key = RedisUtils.getCacheObject(cacheRepeatKey);
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+ if (key == null) {
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+ RedisUtils.setCacheObject(cacheRepeatKey, "", interval, TimeUnit.MILLISECONDS);
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+ KEY_CACHE.set(cacheRepeatKey);
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+ } else {
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+ String message = repeatSubmit.message();
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+ if (StringUtils.startsWith(message, "{") && StringUtils.endsWith(message, "}")) {
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+ message = MessageUtils.message(StringUtils.substring(message, 1, message.length() - 1));
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+ }
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+ throw new ServiceException(message);
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+ }
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+ }
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+
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+ /**
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+ * 处理完请求后执行
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+ *
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+ * @param joinPoint 切点
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+ */
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+ @AfterReturning(pointcut = "@annotation(repeatSubmit)", returning = "jsonResult")
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+ public void doAfterReturning(JoinPoint joinPoint, RepeatSubmit repeatSubmit, Object jsonResult) {
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+ if (jsonResult instanceof R) {
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+ R<?> r = (R<?>) jsonResult;
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+ if (r.getCode() == R.SUCCESS) {
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+ return;
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+ }
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+ RedisUtils.deleteObject(KEY_CACHE.get());
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+ KEY_CACHE.remove();
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+ }
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+ }
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+
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+ /**
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+ * 拦截异常操作
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+ *
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+ * @param joinPoint 切点
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+ * @param e 异常
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+ */
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+ @AfterThrowing(value = "@annotation(repeatSubmit)", throwing = "e")
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+ public void doAfterThrowing(JoinPoint joinPoint, RepeatSubmit repeatSubmit, Exception e) {
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+ RedisUtils.deleteObject(KEY_CACHE.get());
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+ KEY_CACHE.remove();
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+ }
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+
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+ /**
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+ * 参数拼装
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+ */
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+ private String argsArrayToString(Object[] paramsArray) {
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+ StringBuilder params = new StringBuilder();
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+ if (paramsArray != null && paramsArray.length > 0) {
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+ for (Object o : paramsArray) {
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+ if (ObjectUtil.isNotNull(o) && !isFilterObject(o)) {
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+ try {
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+ params.append(JsonUtils.toJsonString(o)).append(" ");
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ }
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+ }
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+ return params.toString().trim();
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+ }
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+
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+ /**
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+ * 判断是否需要过滤的对象。
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+ *
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+ * @param o 对象信息。
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+ * @return 如果是需要过滤的对象,则返回true;否则返回false。
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+ */
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+ @SuppressWarnings("rawtypes")
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+ public boolean isFilterObject(final Object o) {
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+ Class<?> clazz = o.getClass();
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+ if (clazz.isArray()) {
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+ return clazz.getComponentType().isAssignableFrom(MultipartFile.class);
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+ } else if (Collection.class.isAssignableFrom(clazz)) {
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+ Collection collection = (Collection) o;
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+ for (Object value : collection) {
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+ return value instanceof MultipartFile;
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+ }
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+ } else if (Map.class.isAssignableFrom(clazz)) {
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+ Map map = (Map) o;
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+ for (Object value : map.entrySet()) {
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+ Map.Entry entry = (Map.Entry) value;
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+ return entry.getValue() instanceof MultipartFile;
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+ }
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+ }
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+ return o instanceof MultipartFile || o instanceof HttpServletRequest || o instanceof HttpServletResponse
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+ || o instanceof BindingResult;
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+ }
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+
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+}
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