微信小程序-发送模板消息

1 添加一个小程序的消息模板，获取到模板id，存储到数据库中，方便以后修改调用

2. https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/template-message/templateMessage.send.html  小程序模板消息 官网文档，直接调用send方法就行

这里有个坑，就是 form_id, 这个是用户触发表单事件的表单id,需要存储到数据库中，给这个表单提交以后的数据，添加一个字段叫做form_id（7天过期）， 这个formid 是和提交时的openid有关联的，只能是提交的那个人才能用，别人用不了

也就是说，想要给谁发送模板消息，就要存储谁的form_id。

例如 剑圣给守望者提交了一个 爱你呦 的表单(数据库里会存储这个表单的form_id)，但是守望者回复这个表单，并且向给 剑圣发送一个提醒的模板消息，就需要从剑圣提交的表单中获取存储的form_id，然后拼接url，发送post请求才能成功

守望者提交表单时的 form_id，只能给守望者自己发送模板消息

3. 代码正文：

剑圣端：

Form表单属性

bindsubmit="sendClick" 提交方法

report-submit="true" 必须有，用来获取form_id

button

formType="submit" 使用这个属性，进行表单提交，不用bindtap提交

Wxml:

<form bindsubmit="sendClick" bindreset="inputReset" report-submit="true">

<input focus="true" name="send-input" adjust-position='{{false}}' value='{{inputValue}}' bindfocus='focus' bindblur='blur' bindconfirm="sendClick" bindinput="getcontent" />

<image src='./../../../centent/img/camera.png' bindtap="chooseBanner"></image>

<button formType="submit" bindtap="addquestion">发送</button>

</form>

Js:

sendClick: function(e) {

var formId = e.detail.formId;//获取form_id,存储到数据库

hcxcx.requestPost(hcxcx.apiUrl.addquestion, { formId : formId },function(){

})

}

守望者端：

执行回复操作，C#代码：

//发送模板消息

Public void Addquestion(){

//获取用户的formid，这个就是剑圣端提交保单时存储的formId

var list = questionbll.GetList("IsNoTeam:1,MemberId:'" + memberid + "',XcxFormIdNoNull:1");

var fid = list.OrderByDescending(x => x.CreateTime).FirstOrDefault().XcxFormId;

var openid=memberid.openid;//这个是需要发送的用户(剑圣的openid，必须是小程序的openid)

//拼接模板消息主体

XcxRequestData xr = new XcxRequestData();

XcxRequestDataKeyword xcxRequest1 = new XcxRequestDataKeyword();

xcxRequest1.value = createTime.ToString("yyyy-MM-dd HH:mm:ss");

XcxRequestDataKeyword xcxRequest2 = new XcxRequestDataKeyword();

xcxRequest2.value = user.RealName;

XcxRequestDataKeyword xcxRequest3 = new XcxRequestDataKeyword();

xcxRequest3.value = "尊敬的用户您好,您的咨询已经被" + user.RealName + "解答,请及时查看";

xr.keyword1 = xcxRequest1;

xr.keyword2 = xcxRequest2;

xr.keyword3 = xcxRequest3;

//获取消息模板

TemplateMesEntity templateMesEntity = templateMesCache.GetEntityByTeamIdAndTypeId(teamid.ToInt(), 30);

//延迟4秒发送，否则苹果收不到消息

System.Timers.Timer timer = new System.Timers.Timer(4000);

timer.Elapsed += delegate (object sender, System.Timers.ElapsedEventArgs e)

{

timer.Enabled = false;

XcxSendTemplateMsg xcxSend = new XcxSendTemplateMsg();

xcxSend.form_id = fid;

xcxSend.page = "pages/GroupTools/UserClient/UserClient";

xcxSend.template_id = templateMesEntity.TemplateId;

xcxSend.touser = openid;

xcxSend.data = xr;

XcxSendTemplateMsg(xcxSend);

};

timer.Enabled = true;

}

/// <summary>

/// 获取小程序token

/// </summary>

/// <returns></returns>

public static string GetXcxAccessToken()

{

var token = "";

var tw = twCache.GetDataItemList("1001");

if (tw != null)

{

if (string.IsNullOrEmpty(tw.XcxAccessToken) || (!string.IsNullOrEmpty(tw.XcxAccessToken) && tw.XcxExpires != null && tw.XcxExpires <= DateTime.Now))

{

//获取新的token,存储到数据库

var url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + tw.XcxAppId + "&secret=" + tw.XcxAppSecret + "";

var accesstokenstr = HcCrm.Util.HttpMethods.HttpGet(url);

var xcxtoken = JsonConvert.DeserializeObject<XcxAccessToken>(accesstokenstr);

if (xcxtoken.errcode == 0)

{

token = xcxtoken.access_token;

tw.XcxAccessToken = xcxtoken.access_token;

tw.XcxExpires = DateTime.Now.AddSeconds(xcxtoken.expires_in);

teamwechatBLL.SaveForm(tw.TeamWcId, tw);

}

}

else

{

token = tw.XcxAccessToken;

}

}

return token;

}

/// <summary>

/// 发送小程序模板消息

/// </summary>

/// <param name="xcxSendTemplateMsg"></param>

/// <returns></returns>

public static XcxReturnResult XcxSendTemplateMsg(XcxSendTemplateMsg xcxSendTemplateMsg)

{

try

{

var token = GetXcxAccessToken();

var url = "https://api.weixin.qq.com/cgi-bin/message/wxopen/template/send?access_token=" + token;

var data = JsonConvert.SerializeObject(xcxSendTemplateMsg);

var resultstr = HcCrm.Util.HttpMethods.HttpPost(url, data);

// using Newtonsoft.Json;

var result = JsonConvert.DeserializeObject<XcxReturnResult>(resultstr);

LogEntity log = new LogEntity();

log.ExecuteResultJson = result.errmsg;

LogBLL.WriteLog(log);

return result;

}

catch (Exception ex)

{

LogEntity log = new LogEntity();

log.ExecuteResultJson = "XcxSendTemplateMsg Exception：" + ex.Message;

LogBLL.WriteLog(log);

throw;

}

}

/// <summary>

/// HTTP POST方式请求数据

/// </summary>

/// <param name="url">URL.</param>

/// <param name="param">POST的数据</param>

/// <returns></returns>

public static string HttpPost(string url, string param = null)

{

HttpWebRequest request;

//如果是发送HTTPS请求

if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))

{

ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);

request = WebRequest.Create(url) as HttpWebRequest;

request.ProtocolVersion = HttpVersion.Version10;

}

else

{

request = WebRequest.Create(url) as HttpWebRequest;

}

request.Method = "POST";

//request.ContentType = "application/x-www-form-urlencoded";

request.ContentType = "application/x-www-form-urlencoded;charset=unicode";//解决中文乱码问题

request.Accept = "*/*";

request.Timeout = 15000;

request.AllowAutoRedirect = false;

StreamWriter requestStream = null;

WebResponse response = null;

string responseStr = null;

try

{

requestStream = new StreamWriter(request.GetRequestStream());

requestStream.Write(param);

requestStream.Close();

response = request.GetResponse();

if (response != null)

{

// StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);

StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);//解决中文乱码问题

responseStr = reader.ReadToEnd();

reader.Close();

}

}

catch (Exception)

{

throw;

}

finally

{

request = null;

requestStream = null;

response = null;

}

return responseStr;

}

/// <summary>

/// 小程序token类

/// </summary>

public class XcxAccessToken

{

public string access_token { get; set; }

public double expires_in { get; set; }

public int errcode { get; set; }

public string errmsg { get; set; }

}

public class XcxSendTemplateMsg

{

/// <summary>

/// 接收者（用户）的 openid

/// </summary>

public string touser { get; set; }

/// <summary>

/// 所需下发的模板消息的id

/// </summary>

public string template_id { get; set; }

/// <summary>

/// 点击模板卡片后的跳转页面，仅限本小程序内的页面。支持带参数,（示例index?foo=bar）。该字段不填则模板无跳转。

/// </summary>

public string page { get; set; }

/// <summary>

/// 表单提交场景下，为 submit 事件带上的 formId；支付场景下，为本次支付的 prepay_id

/// </summary>

public string form_id { get; set; }

/// <summary>

/// 模板内容，不填则下发空模板。具体格式请参考示例。

/// </summary>

public XcxRequestData data { get; set; }

/// <summary>

/// 模板需要放大的关键词，不填则默认无放大

/// </summary>

public string emphasis_keyword { get; set; }

}

public class XcxRequestData

{

public XcxRequestDataKeyword keyword1 { get; set; }

public XcxRequestDataKeyword keyword2 { get; set; }

public XcxRequestDataKeyword keyword3 { get; set; }

}

public class XcxRequestDataKeyword

{

public string value { get; set; }

}

public class XcxReturnResult

{

public int errcode { get; set; }

public string errmsg { get; set; }

}