前言

Happy Birthday To You! ChenTingXian

人的一生会遇到很多人，但心里能够一直有你的人却很少，承蒙时光不弃，让我遇到啦你们，今天是个特别的日子，仙宝贝生日快乐

今天学啦微信图片与视频的上传，发送关键字，就可以出现指定的视频或图片

先来说一下图片的上传

<a href="/Upload/Img">图片上传</a>
<a href="/Upload/Vedio">视频上传</a>

后台封装你微信的token，便于后期好调用

public static string GetToken()
        {
            RedisClient redisClient = new RedisClient();
            ////先从缓存获取
            //string token = redisClient.Get<string>("token");
            //if (token != null)
            //    return token;
            HttpClient httpClient = new HttpClient();
            string result = 
                httpClient.GetAsync("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wxc2b251cc0434ec05&secret=7c7ca1ee2063ae8415a94d85f1239667").
                Result.Content.ReadAsStringAsync().Result;
            ObtainDTO obtainDTO = JsonConvert.DeserializeObject<ObtainDTO>(result);
            //把token写入缓存
            redisClient.Set<string>("token", obtainDTO.Access_token, TimeSpan.FromSeconds(obtainDTO.Expires_in - 120));
            return obtainDTO.Access_token;
        }

获取后的token,调用路径的时候需要用到

@{
    string token = WXChatPublic_DAL.ObtainDAL.GetToken();
}
<form method="post" action="https://api.weixin.qq.com/cgi-bin/media/upload?access_token=@token&type=image" enctype="multipart/form-data">
    <input type="file" name="fileimg"/>
    <input  type="submit" value="上传"/>

接下来就是视频的上传啦，具体步骤都跟图片的大同小异

@{
    string token = WXChatPublic_DAL.ObtainDAL.GetToken();
}
<h2>Vedio</h2>
<form id="upform" method="post" action="https://api.weixin.qq.com/cgi-bin/material/add_material?access_token=@token&type=video" enctype="multipart/form-data">
   <input type="file" name="media"/>
    <input type="text" name="description" id="description" style="width:100%" />
    <input type="button" onclick="upvedio()" value="上传" />
</form>
<script>
    var upvedio = function () {
        var upform = document.getElementById("upform");
        //视频描述
        var description = document.getElementById("description");
       
        var jsonobj = {};
        jsonobj.title = "小视频";
        jsonobj.introduction = "微信小视频";
        description.value = JSON.stringify(jsonobj);
        upform.submit();
    }
</script>

读取你上传的图片或视频

//图片

 public static string SendImg(string toUser, string fromUser, string MediaId)
        {
            string xml = string.Format(@"<xml>
                                      <ToUserName><![CDATA[{0}]]></ToUserName>
                                      <FromUserName><![CDATA[{1}]]></FromUserName>
                                      <CreateTime>{2}</CreateTime>
                                      <MsgType><![CDATA[image]]></MsgType>
                                      <Image>
                                        <MediaId><![CDATA[{3}]]></MediaId>
                                      </Image>
                                    </xml> ", fromUser, toUser, GetWxTime(), MediaId);
            xml = xml.Trim();
            return xml;
        }

//视频

public static string SendVedio(string toUser, string fromUser, string MediaId)
        {
            string xml = string.Format(@"<xml>
                                      <ToUserName><![CDATA[{0}]]></ToUserName>
                                      <FromUserName><![CDATA[{1}]]></FromUserName>
                                      <CreateTime>{2}</CreateTime>
                                      <MsgType><![CDATA[video]]></MsgType>
                                      <Video>
                                        <MediaId><![CDATA[{3}]]></MediaId>
                                        <Title><![CDATA[视频]]></Title>
                                        <Description><![CDATA[微信视频]]></Description>
                                      </Video>
                                    </xml> ", fromUser, toUser, GetWxTime(), MediaId);
            xml = xml.Trim();
            return xml;
        }

//接收微信推送的xml

  StreamReader streamReader = new StreamReader(Request.InputStream);
                string xml = streamReader.ReadToEnd();
                WXLog.Write(xml, "", "记录微信推送内容");
                XElement xElement = XElement.Parse(xml);
                //发送者
                string FromUserName = xElement.Element("FromUserName").Value;
                //开发者微信号
                string ToUserName = xElement.Element("ToUserName").Value;
                //消息类型
                string MsgType = xElement.Element("MsgType").Value;
                string result = "";
                if (MsgType.ToLower() == "text")//文本消息
                {
                    string Content = xElement.Element("Content").Value;
                    if (Content == "redis")//关键字消息
                    {
                        result = ReadNews.SendText(ToUserName, FromUserName);
                    }
                    else if (Content == "图片")//关键字消息
                    {
                        result = ReadNews.SendImg(ToUserName, FromUserName,"KBBGrhxaIrflD2vL0BiqIrH_IAfbj2_HQHxymsUcrAT2sb5UBdWxZGqV3v17htgM");
                    }
                    else if (Content == "视频")//关键字消息
                    {
                        result = ReadNews.SendVedio(ToUserName, FromUserName, "CjktGqG6rCX3ln48DSQo6fIBibIRxqC4GkrjctuX9IQ");
                    }
                    else
                    {
                        result = ReadNews.SendMsg(ToUserName, FromUserName, Content);
                    }
                }

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