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package com.glxp.api.aspect;
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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.core.util.StrUtil;
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import cn.hutool.crypto.SecureUtil;
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import com.glxp.api.annotation.RepeatSubmit;
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import com.glxp.api.common.res.BaseResponse;
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import com.glxp.api.common.util.ResultVOUtils;
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import com.glxp.api.exception.ServiceException;
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import com.glxp.api.util.*;
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import lombok.RequiredArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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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.stereotype.Component;
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import org.springframework.validation.BindingResult;
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import org.springframework.web.multipart.MultipartFile;
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import javax.annotation.Resource;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.time.Duration;
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import java.util.Collection;
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import java.util.Map;
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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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@Slf4j
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//@RequiredArgsConstructor
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//@Aspect
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//@Component
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public class RepeatSubmitAspect {
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@Resource
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RedisUtil redisUtil;
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private static final ThreadLocal<String> KEY_CACHE = new ThreadLocal<>();
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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 = 0;
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if (repeatSubmit.interval() > 0) {
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interval = repeatSubmit.timeUnit().toMillis(repeatSubmit.interval());
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}
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log.error("不要重复提交,谢谢--" + interval);
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if (interval < 1000) {
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log.error("不要重复提交,谢谢");
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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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// 请求地址(作为存放cache的key值)
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String url = request.getRequestURI();
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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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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 = "REPEAT_SUBMIT_KEY" + url + submitKey;
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String key = (String) redisUtil.get(cacheRepeatKey);
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if (key == null) {
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redisUtil.set(cacheRepeatKey, "", Duration.ofMillis(interval).toMillis());
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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("重复提交", 500);
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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 BaseResponse) {
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try {
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BaseResponse<?> r = (BaseResponse<?>) jsonResult;
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// 成功则不删除redis数据 保证在有效时间内无法重复提交
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if (r.getCode() == 20000) {
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return;
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}
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redisUtil.del(KEY_CACHE.get());
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} finally {
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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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if (KEY_CACHE.get() != null) {
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redisUtil.del(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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* 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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