package com.ruoyi.framework.aspectj;
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import cn.hutool.crypto.SecureUtil;
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import com.ruoyi.common.annotation.RepeatSubmit;
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import com.ruoyi.common.constant.Constants;
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import com.ruoyi.common.exception.ServiceException;
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import com.ruoyi.common.properties.TokenProperties;
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import com.ruoyi.common.utils.JsonUtils;
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import com.ruoyi.common.utils.RedisUtils;
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import com.ruoyi.common.utils.ServletUtils;
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import com.ruoyi.common.utils.StringUtils;
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import com.ruoyi.framework.config.properties.RepeatSubmitProperties;
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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.Aspect;
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import org.aspectj.lang.annotation.Before;
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import org.springframework.beans.factory.annotation.Autowired;
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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.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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* 防止重复提交
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*
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* @author Lion Li
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*/
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@Slf4j
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@RequiredArgsConstructor(onConstructor_ = @Autowired)
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@Aspect
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@Component
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public class RepeatSubmitAspect {
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private final TokenProperties tokenProperties;
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private final RepeatSubmitProperties repeatSubmitProperties;
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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 = repeatSubmitProperties.getInterval();
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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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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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// 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 = request.getHeader(tokenProperties.getHeader());
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if (StringUtils.isEmpty(submitKey)) {
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submitKey = url;
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}
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submitKey = SecureUtil.md5(submitKey + ":" + nowParams);
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// 唯一标识（指定key + 消息头）
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String cacheRepeatKey = Constants.REPEAT_SUBMIT_KEY + 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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} else {
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throw new ServiceException(repeatSubmit.message());
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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 (StringUtils.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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