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你好，任务卡片消息点击按钮是有事件推送到回调接收事件url，可以根据回调获取到点击对应按钮的key值https://work.weixin.qq.com/api/doc/90000/90135/90240#%E4%BB%BB%E5%8A%A1%E5%8D%A1%E7%89%87%E4%BA%8B%E4%BB%B6%E6%8E%A8%E9%80%81