René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"接收小程序媒体检测回调消息时的消息去重判断逻辑有问题","articleBody":"### 简要描述\r\n接收小程序媒体检测回调消息时，进入方法cn.binarywang.wx.miniapp.message.WxMaMessageRouter#isMsgDuplicated判断消息是否重复\r\n\r\n```\r\nprivate boolean isMsgDuplicated(WxMaMessage wxMessage) {\r\n    StringBuilder messageId = new StringBuilder();\r\n    if (wxMessage.getMsgId() == null) {\r\n      messageId.append(wxMessage.getCreateTime())\r\n        .append(\"-\").append(wxMessage.getFromUser())\r\n        .append(\"-\").append(StringUtils.trimToEmpty(wxMessage.getEvent()));\r\n    } else {\r\n      messageId.append(wxMessage.getMsgId())\r\n        .append(\"-\").append(wxMessage.getCreateTime())\r\n        .append(\"-\").append(wxMessage.getFromUser());\r\n    }\r\n    if (StringUtils.isNotEmpty(wxMessage.getToUser())) {\r\n      messageId.append(\"-\").append(wxMessage.getToUser());\r\n    }\r\n    return this.messageDuplicateChecker.isDuplicate(messageId.toString());\r\n  }\r\n```\r\n\r\n\r\n以下是同一个小程序、同一时间发起的2条媒体检测，解密后的回调数据：\r\n```\r\n{\"ToUserName\":\"xx\",\"FromUserName\":\"xx\",\"CreateTime\":1655747827,\"MsgType\":\"event\",\"Event\":\"wxa_media_check\",\"isrisky\":\"0\",\"extra_info_json\":\"\",\"appid\":\"xx\",\"trace_id\":\"db6a6eb16fd1c8afe425b1c76917cc0c\",\"status_code\":\"0\"}\r\n{\"ToUserName\":\"xx\",\"FromUserName\":\"xx\",\"CreateTime\":1655747827,\"MsgType\":\"event\",\"Event\":\"wxa_media_check\",\"isrisky\":\"0\",\"extra_info_json\":\"\",\"appid\":\"xx\",\"trace_id\":\"fbef75edb40bd0b95ea0d138ca6d71f8\",\"status_code\":\"0\"}\r\n```\r\n\r\n只有trace_id不同，可见这种情况下根据CreateTime及ToUserName不足以作为唯一条件，导致消息丢失\r\n\r\n### 模块版本情况\r\n* WxJava 模块名:  4.3.0\r\n\r\n","author":{"url":"https://github.com/fakebody","@type":"Person","name":"fakebody"},"datePublished":"2022-06-20T18:09:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/2705/WxJava/issues/2705"}