MVC下c#对接微信公众平台开发者模式

在ashx文件中进行HttpContext的处理：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Biz.WX;namespace weixinplat
{/// <summary>/// WeiXin 的摘要说明/// </summary>public class WeiXin : IHttpHandler{public void ProcessRequest(HttpContext context){try{string postString = string.Empty;//初始化空字符串来转抓到的request请求的bit流context.Response.ContentType = "text/plain";if (context.Request.HttpMethod.ToLower() == "post")//如果从requset的httpmethod方法是post就进行图文等处理
                {}else//否则就是get方式，进行校验认证
                {AccessToken.Auth();}}catch (Exception ex){throw ex;}}public bool IsReusable{get{return false;}}}
}

在专门处理数据的类库Biz中校验：

其中AccessToken类用来处理token:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Configuration;namespace Biz.WeiXin
{public class AccessToken{/// <summary>/// 这个函数是初始化配置服务器地址/// </summary>public static void Auth(){string echoStr = HttpContext.Current.Request.QueryString["echoStr"];if (CheckSignature()) //校验签名是否正确
            {if (!string.IsNullOrEmpty(echoStr)){HttpContext.Current.Response.Write(echoStr);HttpContext.Current.Response.End();}}}/// <summary>/// 校验微信公众平台签名函数/// </summary>/// <returns></returns>public static bool CheckSignature(){string signature = HttpContext.Current.Request.QueryString["signature"];string timestamp = HttpContext.Current.Request.QueryString["timestamp"];string nonce = HttpContext.Current.Request.QueryString["nonce"];string token = ConfigurationManager.AppSettings["weixin_token"];string[] tmpArr = { token , timestamp, nonce };Array.Sort(tmpArr);string tmpStr = string.Join("", tmpArr);tmpStr = WX.Sha1_Hash(tmpStr);if (tmpStr == signature){return true;}else{returnfalse;}}}
}

WX类用来处理哈希算法：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;namespace Biz.WX
{public class WX{public static string Sha1_Hash(string str_sha1_in){SHA1 sha1 = new SHA1CryptoServiceProvider();byte[] bytes_sha1_in = UTF8Encoding.Default.GetBytes(str_sha1_in);byte[] bytes_sha1_out = sha1.ComputeHash(bytes_sha1_in);string str_sha1_out = BitConverter.ToString(bytes_sha1_out);str_sha1_out = str_sha1_out.Replace("-", "").ToLower();return str_sha1_out;}}
}

将菜单发布到微信公众平台

在treegrid空间的toolbar工具栏按钮中通过ajax来连接到后台方法：

 {id: 'btnRefresh',text: '发布到微信公众平台',iconCls: 'icon-redo',handler: function () {$.ajax({url: "/WxMenu/MenuToWeiXin",data: {},dataType: "json",type: "POST",traditional: true,beforeSend: function () {showProcess(true, "系统提示", "正发布到微信公众平台......");},error: function () {},success: function (result) {showMsg("系统提示", result.Message, false);},complete: function () {showProcess(false);}});}

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连接到后台的MenuToWeiXin方法返回json对象：

 public JsonResult MenuToWeiXin(){try{MenuManager.CreateMenu();return Json(new { Success = true, Message = "请求成功" });}catch (Exception ex){return Json(new { Success = false,Message = ex.Message });}}

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其中 MenuManager.CreateMenu()方法就是去将微信菜单对接到微信API上面。如下：

public static void CreateMenu(){NHibernateHelper nhlper = new NHibernateHelper();ISession session = nhlper.GetSession();IEnumerable<WeiXinMenu> kinds = session.Query<WeiXinMenu>();if (kinds.Count() <= 1){throw new Exception("请先配置菜单");}string menu = "";menu += "{\"button\":[";kinds.Where(c => c.ParentId == "10000").Foreach(c => {menu += "{";menu += "\"name\":\"{0}\",".FormartWith(c.MenuName);menu += "\"sub_button\":[";kinds.Where(m=>m.ParentId==c.MenuId).Foreach(m=> {menu += "{";menu += "\"type\":\"{0}\",".FormartWith(m.MenuType);menu += "\"name\":\"{0}\",".FormartWith(m.MenuName);if (m.MenuType == "click"){menu += "\"key\":\"{0}\"".FormartWith(m.MenuKey);}else{menu += "\"url\":\"{0}\"".FormartWith(m.MenuUrl);}menu += "},";});menu = menu.Remove(menu.Length - 1, 1);menu += "]";menu += "},";});menu = menu.Remove(menu.Length - 1, 1);menu += "]";menu += "}";string url = url_menu_create + AccessToken.Weixin_ACCESS_TOKEN;string responsestring = HttpUtils.GetHttprequest(url);JObject result = JsonConvert.DeserializeObject(responsestring) as JObject;string errcode = result["errcode"].ToString();string errmsg = result["errmsg"].ToString();if (errcode != "0"){throw new Exception(Weixin_Errorcode.GetErrormsg(int.Parse(errcode)));}}

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其中url_menu_create是微信给的API接口 private static string url_menu_create = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=";

然后将查询到的菜单组装成微信后台需要的json格式。然后调用接口，用post方式的httprequest去访问。可以根据返回的错误代码来知道具体问题是在哪里。

tips:调用微信的很多API接口都需要微信的access_token，所以可以单独写个类来获取：其中AccessToken.Weixin_ACCESS_TOKEN就是获取到微信的access_token：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Configuration;
using System.Security.Cryptography;
using Business.Extsion;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;namespace Business.weixin
{public class AccessToken{public static string AppID = ConfigurationManager.AppSettings["weixin_AppID"];public static string AppSecret = ConfigurationManager.AppSettings["weixin_AppSecret"];public static string mAccessToken;public static DateTime GettokenTime;public static int Expires_Period = 7200;//token有效时间，默认2小时/// <summary>/// 正经对接微信公众平台函数。获取echoStr，来返回。/// </summary>public static void Auth(){string echoStr = HttpContext.Current.Request.QueryString["echoStr"];if (CheckSignature()){if (!string.IsNullOrEmpty(echoStr)){HttpContext.Current.Response.Write("echoStr");HttpContext.Current.Response.End();}}}/// <summary>/// 校验函数，微信后台返回的signature和token+timestamp+nonce 对比/// </summary>/// <returns></returns>public static bool CheckSignature(){string signature = HttpContext.Current.Request.QueryString["signature"];string timestamp = HttpContext.Current.Request.QueryString["timestamp"];string nonce = HttpContext.Current.Request.QueryString["nonce"];string token = ConfigurationManager.AppSettings["weixintoken"];string[] tmpArr = { token, timestamp, nonce };Array.Sort(tmpArr);string tmpStr = string.Join("", tmpArr);tmpStr = Sha1_Hash(tmpStr);//通过hash算法得到一个字符串，跟signature对比if (tmpStr == signature){return true;}else{return false;}}public static string Sha1_Hash(string intputstr){SHA1 sha1 =new SHA1CryptoServiceProvider();byte[] byte_in = UTF8Encoding.Default.GetBytes(intputstr);byte[] byte_out = sha1.ComputeHash(byte_in);string outputstr = BitConverter.ToString(byte_out);outputstr = outputstr.Replace("-","").ToLower();return outputstr;}public static string Weixin_ACCESS_TOKEN{get{//如果为空或者过期。则重新获取if (string.IsNullOrEmpty(mAccessToken) || HasExpired()){//获取accesstoken函数mAccessToken = GetAccessToken(AppID, AppSecret);}return mAccessToken;}}/// <summary>/// 判断是不是token过期/// </summary>/// <returns></returns>public static bool HasExpired(){if (GettokenTime != null){if (DateTime.Now > GettokenTime.AddSeconds(7200).AddSeconds(-60)){return true;}}return false;}/// <summary>/// 获取accesstoken函数/// </summary>/// <param name="AppID"></param>/// <param name="AppSecret"></param>/// <returns></returns>public static string GetAccessToken(string AppID,string AppSecret){string url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}";url = string.Format(url, AppID, AppSecret);string responsestring = HttpUtils.GetHttprequest(url);JObject result = JsonConvert.DeserializeObject(responsestring) as JObject;if (result["access_token"] != null){GettokenTime = DateTime.Now;if (result["expires_in"] != null){Expires_Period = int.Parse(result["expires_in"].ToString());}return result["access_token"].ToString();}else{GettokenTime = DateTime.MinValue;}return null;}}
}

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在访问这种api接口的时候都需要主动去访问，所以可以把httprequest请求单独写在一个类HttpUtils中：

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;namespace Business.Extsion
{public class HttpUtils{/// <summary>/// 发起一个post类型的http请求/// </summary>/// <param name="url"></param>/// <param name="data"></param>/// <returns></returns>public static string SendHttprequest(string url,string data){return SendPostHttprequest( url, "application/x-www-form-urlencoded",  data);}/// <summary>/// 发起一个get模式的http请求/// </summary>/// <returns></returns>public static string GetHttprequest(string url){return SendGetHttprequest(url,"application/x-www-form-urlencoded");}public static string SendPostHttprequest(string url,string contentType, string requestData){WebRequest request = (WebRequest)HttpWebRequest.Create(url);request.Method = "POST";request.ContentType = contentType;byte[] postbytes = Encoding.UTF8.GetBytes(requestData);request.ContentLength = postbytes.Length;using (Stream outstream = request.GetRequestStream()){outstream.Write(postbytes, 0, postbytes.Length);}string result = string.Empty;using (WebResponse response = request.GetResponse()){if (response !=null){using (Stream getstream = response.GetResponseStream()){using (StreamReader reader = new StreamReader(getstream,Encoding.UTF8)){result = reader.ReadToEnd();}}}}return result;}public static string SendGetHttprequest(string url ,string contenType){WebRequest request = (WebRequest)HttpWebRequest.Create(url);request.Method = "GET";request.ContentType = contenType;string result = string.Empty;using (WebResponse response = request.GetResponse()){if (response != null){using (Stream resstream = response.GetResponseStream()){using (StreamReader reader = new StreamReader(resstream,Encoding.UTF8) ){result = reader.ReadToEnd();}}}}return result;}}
}

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编辑新增菜单

通过控制器返回视图：

public ActionResult MenuEdit(int id){NHibernateHelper nhlper = new NHibernateHelper();ISession session = nhlper.GetSession();WeiXinMenu model = session.Get<WeiXinMenu>(id);if (model == null){model = new WeiXinMenu();model.IsEnable = "1";model.CreateTime = DateTime.Now;}return View(model);}

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控制器动作跟着返回查询到的model在视图上显示：

@model Domain.OrmLib.Entity.WeiXinMenu
@{ViewBag.Title = "MenuEdit";Layout = "~/Views/Shared/_Form.cshtml";
}@section header {}@section body{@using (Html.BeginForm("MenuSaveOrUpdate", "WeiXin", FormMethod.Post, new { id = "dataForm" })){<table class="datalistDaily" cellpadding="5" style="font-size:12px;margin-top:10px;margin-left:10px;"><tr><td style="text-align:right;">菜单编码：</td><td><input class="easyui-textbox" id="MenuId" name="MenuId"style="width:300px;" data-options="required:true" value="@Model.MenuId" /></td></tr><tr><td style="text-align:right;">菜单名字：</td><td><input class="easyui-textbox" id="MenuName" name="MenuName"style="width:300px;" data-options="required:true" value="@Model.MenuName" /></td></tr><tr><td style="text-align:right;">动作类型：</td><td><select id="MenuType" name="MenuType" class="easyui-combobox" style="width:300px;"><option selected="selected" value="view">跳转URL</option><option value="click">点击推事件</option><option value="scancode_push">扫码推事件</option><option value="scancode_waitmsg">扫码推事件且弹出(消息接收中)提示框</option><option value="pic_sysphoto">弹出系统拍照发图</option><option value="pic_photo_or_album">弹出拍照或者相册发图</option><option value="pic_weixin">弹出微信相册发图器</option><option value="location_select">弹出地理位置选择器</option><option value="media_id">下发消息（除文本消息）</option><option value="view_limited">跳转图文消息URL</option></select></td></tr><tr><td style="text-align:right;">菜单Url：</td><td><input class="easyui-textbox" id="MenuUrl" name="MenuUrl"style="width:300px;" value="@Model.MenuUrl" /></td></tr><tr><td style="text-align:right;">菜单Key：</td><td><input class="easyui-textbox" id="MenuKey" name="MenuKey"style="width:300px;" value="@Model.MenuKey" /></td></tr><tr><td style="text-align:right;">菜单排序：</td><td><input class="easyui-textbox" id="OrderBy" name="OrderBy" data-options="required:true"style="width:300px;" value="@Model.OrderBy" /></td></tr><tr><td style="text-align:right;">菜单状态：</td><td><select id="IsEnable" name="IsEnable" class="easyui-combobox" style="width:300px;"><option selected="selected" value="1">启用菜单</option><option value="0">禁用菜单</option></select></td></tr><tr><td style="text-align:right;">上级菜单：</td><td><input class="easyui-combotree" name="ParentId" id="ParentId" style="width:300px;" /></td></tr><tr><td colspan="2" align="center"></td></tr><tr><td colspan="2" align="center">@Html.HiddenFor(model => model.Id)@Html.HiddenFor(model => model.UserNum)@Html.HiddenFor(model => model.UserName)@Html.HiddenFor(model => model.CreateTime)<a icon="icon-ok" class="easyui-linkbutton" οnclick="save()">存盘</a></td></tr></table>}}@section scripts {
<script src="~/Content/oa/scripts/xlayout.js"></script>
<script type="text/javascript">$(function () {$('#ParentId').combotree({url: "/WxMenu/MenuTree",required: true,multiple: false,lines: true,queryParams: { ids: '@Model.ParentId' },onLoadSuccess: function () {$('#ParentId').combotree('setValue', '@Model.ParentId');}});$('#MenuType').combobox('setValue', '@Model.MenuType');$('#IsEnable').combobox('setValue', '@Model.IsEnable');})function save() {alert(2212);var dataForm = $("#dataForm").form('validate');if (!dataForm) return;showProcess(true, "系统提示", "正在存盘中......");$.ajax({url: "/WxMenu/MenuSaveOrUpdate",data: $("#dataForm").serialize(),dataType: "json",type: "POST",traditional: true,success: function (result) {showProcess(false);if (result.Success) {var sys_main = $(self.top.document).find("#sys_main").get(0).contentWindow;sys_main.radWindowCallBackFn();var url = document.URL;url = url.replace("http://" + window.location.host, "");url = url.replace(/\//g, "_");
                    sys_main.CloseWindow(url);} else {showMsg("系统提示", result.Message, false);}}});return false;}</script>}

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通过ajax在后台进行saveorupdate

转载于:https://www.cnblogs.com/jackcheblog/p/6864309.html

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