分享一篇基于.NET的微信SDK
| 一、前言 特别不喜欢麻烦的一个人，最近碰到了微信开发。下载下来了一些其他人写的微信开发“框架”，但是被恶心到了，实现的太臃肿啦。 最不喜欢的就是把微信返回的xml消息在组装成实体类，所以会比较臃肿，现在都提倡轻量级，所以有什么办法可以避免大量实体类的存在呢。 当然，还有包装的比较繁杂，看完官方API后，再看"框架"，让人感觉一头雾水，不够清晰、明了。 二、我的实现思路 我的微信SDK（不敢自称框架），最重要的实现2个目标： 1.轻量级，就是要摒弃实体类，尽量少的申明Entity，减少SDK的体量； 2.简单、明了，就是SDK类的划分和官方API保持一致，让人一看就懂你的用意。 用户发送请是首先POST到微信服务器的，然后微信服务器在POST到我的服务器，这个接受的消息是xml,我猜测为什么是xml,而不是更轻量级的json，是为了更好的兼容性，毕竟xml更通用一些（说错了，请指出来）。而我们主动调用微信的一些API时，它返回的是json格式，我靠，要死啊，高大上啊。你们的副总裁张小龙不知道这事吗？好吧，这样其实也可以的。 其实，调用微信的工作原理很简单，没有必要上来就框架什么的，我相信是个合格的程序员都能做出来。 我们的服务器只需要一个GET,和一个POST就可以和微信通信了，从这一点来看，设计的还是比较人性化的，赞一个。GET用于接通微信服务的校验，验证；POST用于接收微信服务器过来的消息，然后将Response组装好返回即可。 三、上代码 好了，废话不多说了。 由于微信服务器Post给我们的是xml消息，返回的是json,所以需要互转。这样就存在3种类型的format,这也是大量的框架定义实体类导致框架不够轻量级的的原因之所在。 实现第一个目标，我主要用到了.net Framework4.0的Dynamic特性，和一个将xml字符串自动转换成Dynamic Object的DynamicXml.cs类，还有一个将json字符串自动转换成Dynamic Object的DynamicJson.cs类。 苦苦寻觅，终于让我找到了我想要的。 1.以下是DynamicXml.cs类，文件头有原作者的版权信息。
/*-------------------------------------------------------------------------- * https://www.captechconsulting.com/blog/kevin-hazzard/fluent-xml-parsing-using-cs-dynamic-type-part-1 * 博客园网友 夜の魔王 友情借用此代码，用于微信开发。 * http://www.cnblogs.com/deepleo/*--------------------------------------------------------------------------*/using System;using System.Collections.Generic;using System.Linq;using System.Dynamic;using System.Xml.Linq;using System.Collections;public class DynamicXml : DynamicObject, IEnumerable{ private readonly List<XElement> _elements; public DynamicXml(string text) { var doc = XDocument.Parse(text); _elements = new List<XElement> { doc.Root }; } protected DynamicXml(XElement element) { _elements = new List<XElement> { element }; } protected DynamicXml(IEnumerable<XElement> elements) { _elements = new List<XElement>(elements); } public override bool TryGetMember(GetMemberBinder binder, out object result) { result = null; if (binder.Name == "Value") result = _elements[0].Value; else if (binder.Name == "Count") result = _elements.Count; else { var attr = _elements[0].Attribute(XName.Get(binder.Name)); if (attr != null) result = attr; else { var items = _elements.Descendants(XName.Get(binder.Name)); if (items == null || items.Count() == 0) return false; result = new DynamicXml(items); } } return true; } public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result) { int ndx = (int)indexes[0]; result = new DynamicXml(_elements[ndx]); return true; } public IEnumerator GetEnumerator() { foreach (var element in _elements) yield return new DynamicXml(element); }}View Code 这个代码我也没仔细看，反正能用，没出过差错。 2.以下是DynamicJson.cs类，文件头有原作者的版权信息
/*--------------------------------------------------------------------------* DynamicJson* ver 1.2.0.0 (May. 21th, 2010)** created and maintained by neuecc <ils@neue.cc>* licensed under Microsoft Public License(Ms-PL)* http://neue.cc/* http://dynamicjson.codeplex.com/ * 博客园网友 夜の魔王 友情借用此代码，用于微信开发。 * http://www.cnblogs.com/deepleo/*--------------------------------------------------------------------------*/using System;using System.Collections;using System.Collections.Generic;using System.Diagnostics;using System.Dynamic;using System.IO;using System.Linq;using System.Reflection;using System.Runtime.Serialization.Json;using System.Text;using System.Xml;using System.Xml.Linq;namespace Codeplex.Data{ public class DynamicJson : DynamicObject { private enum JsonType { @string, number, boolean, @object, array, @null } // public static methods /// <summary>from JsonSring to DynamicJson</summary> public static dynamic Parse(string json) { return Parse(json, Encoding.Unicode); } /// <summary>from JsonSring to DynamicJson</summary> public static dynamic Parse(string json, Encoding encoding) { using (var reader = JsonReaderWriterFactory.CreateJsonReader(encoding.GetBytes(json), XmlDictionaryReaderQuotas.Max)) { return ToValue(XElement.Load(reader)); } } /// <summary>from JsonSringStream to DynamicJson</summary> public static dynamic Parse(Stream stream) { using (var reader = JsonReaderWriterFactory.CreateJsonReader(stream, XmlDictionaryReaderQuotas.Max)) { return ToValue(XElement.Load(reader)); } } /// <summary>from JsonSringStream to DynamicJson</summary> public static dynamic Parse(Stream stream, Encoding encoding) { using (var reader = JsonReaderWriterFactory.CreateJsonReader(stream, encoding, XmlDictionaryReaderQuotas.Max, _ => { })) { return ToValue(XElement.Load(reader)); } } /// <summary>create JsonSring from primitive or IEnumerable or Object({public property name:property value})</summary> public static string Serialize(object obj) { return CreateJsonString(new XStreamingElement("root", CreateTypeAttr(GetJsonType(obj)), CreateJsonNode(obj))); } // private static methods private static dynamic ToValue(XElement element) { var type = (JsonType)Enum.Parse(typeof(JsonType), element.Attribute("type").Value); switch (type) { case JsonType.boolean: return (bool)element; case JsonType.number: return (double)element; case JsonType.@string: return (string)element; case JsonType.@object: case JsonType.array: return new DynamicJson(element, type); case JsonType.@null: default: return null; } } private static JsonType GetJsonType(object obj) { if (obj == null) return JsonType.@null; switch (Type.GetTypeCode(obj.GetType())) { case TypeCode.Boolean: return JsonType.boolean; case TypeCode.String: case TypeCode.Char: case TypeCode.DateTime: return JsonType.@string; case TypeCode.Int16: case TypeCode.Int32: case TypeCode.Int64: case TypeCode.UInt16: case TypeCode.UInt32: case TypeCode.UInt64: case TypeCode.Single: case TypeCode.Double: case TypeCode.Decimal: case TypeCode.SByte: case TypeCode.Byte: return JsonType.number; case TypeCode.Object: return (obj is IEnumerable) ? JsonType.array : JsonType.@object; case TypeCode.DBNull: case TypeCode.Empty: default: return JsonType.@null; } } private static XAttribute CreateTypeAttr(JsonType type) { return new XAttribute("type", type.ToString()); } private static object CreateJsonNode(object obj) { var type = GetJsonType(obj); switch (type) { case JsonType.@string: case JsonType.number: return obj; case JsonType.boolean: return obj.ToString().ToLower(); case JsonType.@object: return CreateXObject(obj); case JsonType.array: return CreateXArray(obj as IEnumerable); case JsonType.@null: default: return null; } } private static IEnumerable<XStreamingElement> CreateXArray<T>(T obj) where T : IEnumerable { return obj.Cast<object>() .Select(o => new XStreamingElement("item", CreateTypeAttr(GetJsonType(o)), CreateJsonNode(o))); } private static IEnumerable<XStreamingElement> CreateXObject(object obj) { return obj.GetType() .GetProperties(BindingFlags.Public | BindingFlags.Instance) .Select(pi => new { Name = pi.Name, Value = pi.GetValue(obj, null) }) .Select(a => new XStreamingElement(a.Name, CreateTypeAttr(GetJsonType(a.Value)), CreateJsonNode(a.Value))); } private static string CreateJsonString(XStreamingElement element) { using (var ms = new MemoryStream()) using (var writer = JsonReaderWriterFactory.CreateJsonWriter(ms, Encoding.Unicode)) { element.WriteTo(writer); writer.Flush(); return Encoding.Unicode.GetString(ms.ToArray()); } } // dynamic structure represents JavaScript Object/Array readonly XElement xml; readonly JsonType jsonType; /// <summary>create blank JSObject</summary> public DynamicJson() { xml = new XElement("root", CreateTypeAttr(JsonType.@object)); jsonType = JsonType.@object; } private DynamicJson(XElement element, JsonType type) { Debug.Assert(type == JsonType.array || type == JsonType.@object); xml = element; jsonType = type; } public bool IsObject { get { return jsonType == JsonType.@object; } } public bool IsArray { get { return jsonType == JsonType.array; } } /// <summary>has property or not</summary> public bool IsDefined(string name) { return IsObject && (xml.Element(name) != null); } /// <summary>has property or not</summary> public bool IsDefined(int index) { return IsArray && (xml.Elements().ElementAtOrDefault(index) != null); } /// <summary>delete property</summary> public bool Delete(string name) { var elem = xml.Element(name); if (elem != null) { elem.Remove(); return true; } else return false; } /// <summary>delete property</summary> public bool Delete(int index) { var elem = xml.Elements().ElementAtOrDefault(index); if (elem != null) { elem.Remove(); return true; } else return false; } /// <summary>mapping to Array or Class by Public PropertyName</summary> public T Deserialize<T>() { return (T)Deserialize(typeof(T)); } private object Deserialize(Type type) { return (IsArray) ? DeserializeArray(type) : DeserializeObject(type); } private dynamic DeserializeValue(XElement element, Type elementType) { var value = ToValue(element); if (value is DynamicJson) { value = ((DynamicJson)value).Deserialize(elementType); } return Convert.ChangeType(value, elementType); } private object DeserializeObject(Type targetType) { var result = Activator.CreateInstance(targetType); var dict = targetType.GetProperties(BindingFlags.Public | BindingFlags.Instance) .Where(p => p.CanWrite) .ToDictionary(pi => pi.Name, pi => pi); foreach (var item in xml.Elements()) { PropertyInfo propertyInfo; if (!dict.TryGetValue(item.Name.LocalName, out propertyInfo)) continue; var value = DeserializeValue(item, propertyInfo.PropertyType); propertyInfo.SetValue(result, value, null); } return result; } private object DeserializeArray(Type targetType) { if (targetType.IsArray) // Foo[] { var elemType = targetType.GetElementType(); dynamic array = Array.CreateInstance(elemType, xml.Elements().Count()); var index = 0; foreach (var item in xml.Elements()) { array[index++] = DeserializeValue(item, elemType); } return array; } else // List<Foo> { var elemType = targetType.GetGenericArguments()[0]; dynamic list = Activator.CreateInstance(targetType); foreach (var item in xml.Elements()) { list.Add(DeserializeValue(item, elemType)); } return list; } } // Delete public override bool TryInvoke(InvokeBinder binder, object[] args, out object result) { result = (IsArray) ? Delete((int)args[0]) : Delete((string)args[0]); return true; } // IsDefined, if has args then TryGetMember public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result) { if (args.Length > 0) { result = null; return false; } result = IsDefined(binder.Name); return true; } // Deserialize or foreach(IEnumerable) public override bool TryConvert(ConvertBinder binder, out object result) { if (binder.Type == typeof(IEnumerable) || binder.Type == typeof(object[])) { var ie = (IsArray) ? xml.Elements().Select(x => ToValue(x)) : xml.Elements().Select(x => (dynamic)new KeyValuePair<string, object>(x.Name.LocalName, ToValue(x))); result = (binder.Type == typeof(object[])) ? ie.ToArray() : ie; } else { result = Deserialize(binder.Type); } return true; } private bool TryGet(XElement element, out object result) { if (element == null) { result = null; return false; } result = ToValue(element); return true; } public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result) { return (IsArray) ? TryGet(xml.Elements().ElementAtOrDefault((int)indexes[0]), out result) : TryGet(xml.Element((string)indexes[0]), out result); } public override bool TryGetMember(GetMemberBinder binder, out object result) { return (IsArray) ? TryGet(xml.Elements().ElementAtOrDefault(int.Parse(binder.Name)), out result) : TryGet(xml.Element(binder.Name), out result); } private bool TrySet(string name, object value) { var type = GetJsonType(value); var element = xml.Element(name); if (element == null) { xml.Add(new XElement(name, CreateTypeAttr(type), CreateJsonNode(value))); } else { element.Attribute("type").Value = type.ToString(); element.ReplaceNodes(CreateJsonNode(value)); } return true; } private bool TrySet(int index, object value) { var type = GetJsonType(value); var e = xml.Elements().ElementAtOrDefault(index); if (e == null) { xml.Add(new XElement("item", CreateTypeAttr(type), CreateJsonNode(value))); } else { e.Attribute("type").Value = type.ToString(); e.ReplaceNodes(CreateJsonNode(value)); } return true; } public override bool TrySetIndex(SetIndexBinder binder, object[] indexes, object value) { return (IsArray) ? TrySet((int)indexes[0], value) : TrySet((string)indexes[0], value); } public override bool TrySetMember(SetMemberBinder binder, object value) { return (IsArray) ? TrySet(int.Parse(binder.Name), value) : TrySet(binder.Name, value); } public override IEnumerable<string> GetDynamicMemberNames() { return (IsArray) ? xml.Elements().Select((x, i) => i.ToString()) : xml.Elements().Select(x => x.Name.LocalName); } /// <summary>Serialize to JsonString</summary> public override string ToString() { // <foo type="null"></foo> is can't serialize. replace to <foo type="null" /> foreach (var elem in xml.Descendants().Where(x => x.Attribute("type").Value == "null")) { elem.RemoveNodes(); } return CreateJsonString(new XStreamingElement("root", CreateTypeAttr(jsonType), xml.Elements())); } }}View Code 这个代码我也依旧没仔细看，反正也能用，没出过差错。 这个最核心的拦路虎解决了，后面的事情就顺理成章的进行啦。 3.基础支持API包装
/*--------------------------------------------------------------------------* BasicAPI.cs *Auth:deepleo* Date:2013.12.31* Email:2586662969@qq.com*--------------------------------------------------------------------------*/using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Net.Http;using Codeplex.Data;using System.IO;namespace Deepleo.Weixin.SDK{ /// <summary> /// 对应微信API的 "基础支持" /// </summary> public class BasicAPI { /// <summary> /// 检查签名是否正确: /// http://mp.weixin.qq.com/wiki/index.php?title=%E6%8E%A5%E5%85%A5%E6%8C%87%E5%8D%97 /// </summary> /// <param name="signature"></param> /// <param name="timestamp"></param> /// <param name="nonce"></param> /// <param name="token">AccessToken</param> /// <returns> /// true: check signature success /// false: check failed, 非微信官方调用! /// </returns> public static bool CheckSignature(string signature, string timestamp, string nonce, string token, out string ent) { var arr = new[] { token, timestamp, nonce }.OrderBy(z => z).ToArray(); var arrString = string.Join("", arr); var sha1 = System.Security.Cryptography.SHA1.Create(); var sha1Arr = sha1.ComputeHash(Encoding.UTF8.GetBytes(arrString)); StringBuilder enText = new StringBuilder(); foreach (var b in sha1Arr) { enText.AppendFormat("{0:x2}", b); } ent = enText.ToString(); return signature == enText.ToString(); } /// <summary> /// 获取AccessToken /// http://mp.weixin.qq.com/wiki/index.php?title=%E8%8E%B7%E5%8F%96access_token /// </summary> /// <param name="grant_type"></param> /// <param name="appid"></param> /// <param name="secrect"></param> /// <returns>access_toke</returns> public static dynamic GetAccessToken( string appid, string secrect) { var url = string.Format("https://api.weixin.qq.com/cgi-bin/token?grant_type={0}&appid={1}&secret={2}", "client_credential", appid, secrect); var client = new HttpClient(); var result = client.GetAsync(url).Result; if (!result.IsSuccessStatusCode) return string.Empty; var token = DynamicJson.Parse(result.Content.ReadAsStringAsync().Result); return token; } /// <summary> /// 上传多媒体文件 /// http://mp.weixin.qq.com/wiki/index.php?title=%E4%B8%8A%E4%BC%A0%E4%B8%8B%E8%BD%BD%E5%A4%9A%E5%AA%92%E4%BD%93%E6%96%87%E4%BB%B6 /// 1.上传的媒体文件限制： ///图片（image) : 1MB，支持JPG格式 ///语音（voice）：1MB，播放长度不超过60s，支持MP4格式 ///视频（video）：10MB，支持MP4格式 ///缩略图（thumb)：64KB，支持JPG格式 ///2.媒体文件在后台保存时间为3天，即3天后media_id失效 /// </summary> /// <param name="token"></param> /// <param name="type"></param> /// <param name="file"></param> /// <returns>media_id</returns> public static string UploadMedia(string token, string type, string file) { var url = string.Format("http://api.weixin.qq.com/cgi-bin/media/upload?access_token={0}&type={1}&filename={2}", token, type, Path.GetFileName(file)); var client = new HttpClient(); var result = client.PostAsync(url, new StreamContent(new FileStream(file, FileMode.Open, FileAccess.Read))); if (!result.Result.IsSuccessStatusCode) return string.Empty; var media = DynamicJson.Parse(result.Result.Content.ReadAsStringAsync().Result); return media.media_id; } }}View Code 4.发送消息包装
/*--------------------------------------------------------------------------* SendMessageAPI.cs *Auth:deepleo* Date:2013.12.31* Email:2586662969@qq.com*--------------------------------------------------------------------------*/using System;using System.Collections.Generic;using System.Linq;using System.Text;using Codeplex.Data;using System.Net;using System.Net.Http;namespace Deepleo.Weixin.SDK{ /// <summary> /// 对应微信API的 "发送消息” /// </summary> public class SendMessageAPI { /// <summary> /// 被动回复消息 /// </summary> /// <param name="message">微信服务器推送的消息</param> /// <param name="executor">用户自定义的消息执行者</param> /// <returns></returns> public static string Relay(WeixinMessage message, IWeixinExecutor executor) { return executor.Execute(message); } /// <summary> /// 主动发送客服消息 /// http://mp.weixin.qq.com/wiki/index.php?title=%E5%8F%91%E9%80%81%E5%AE%A2%E6%9C%8D%E6%B6%88%E6%81%AF /// 当用户主动发消息给公众号的时候 /// 开发者在一段时间内（目前为24小时）可以调用客服消息接口，在24小时内不限制发送次数。 /// </summary> /// <param name="token"></param> /// <param name="msg">json格式的消息，具体格式请参考微信官方API</param> /// <returns></returns> public static bool Send(string token, string msg) { var client = new HttpClient(); var task = client.PostAsync(string.Format("https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token={0}", token), new StringContent(msg)).Result; return task.IsSuccessStatusCode; } }}View Code 5.其他代码就不一一贴出来了。可以在文章最后自行下载完整代码查阅。 6.处理与微信服务器通信的WeixinController.cs,WeixinExecutor.cs
using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Text;using System.Web;using System.Web.Mvc;using System.Xml.Linq;using Deepleo.Weixin.SDK;using Deepleo.NewTon.Web.Services;using System.Xml;using Deepleo.NewTon.Framework.Services.Admin;using Deepleo.Log;namespace Deepleo.NewTon.Web.Controllers{ public class WeixinController : Controller { public WeixinController() { } /// <summary> /// 微信后台验证地址（使用Get），微信后台的“接口配置信息”的Url /// </summary> [HttpGet] [ActionName("Index")] public ActionResult Get(string signature, string timestamp, string nonce, string echostr) { var token = new SettingsService().Get().Token; if (string.IsNullOrEmpty(_token)) return Content("请先设置Token！"); var ent = ""; if (!BasicAPI.CheckSignature(signature, timestamp, nonce, _token, out ent)) { new WeixinLogService().Create(new Framework.Entities.WeixinLog("get(failed)", string.Format("(get weixin)signature:{0},timestamp:{1},nonce:{2},echostr:{3},ent:{4},token:{5}", signature, timestamp, nonce, echostr, ent, _token))); return Content("参数错误！"); } return Content(echostr); //返回随机字符串则表示验证通过 } /// <summary> /// 用户发送消息后，微信平台自动Post一个请求到这里，并等待响应XML。 /// </summary> [HttpPost] [ActionName("Index")] public ActionResult Post(string signature, string timestamp, string nonce, string echostr) { WeixinMessage message = null; using (var streamReader = new StreamReader(Request.InputStream)) { message = AcceptMessageAPI.Parse(streamReader.ReadToEnd()); } var response = new WeixinExecutor().Execute(message); return new ContentResult { Content = response, ContentType = "text/xml", ContentEncoding = System.Text.UTF8Encoding.UTF8 }; } }}View Code
/*--------------------------------------------------------------------------* WeixinExecutor.cs *Auth:deepleo* Date:2013.12.31* Email:2586662969@qq.com*--------------------------------------------------------------------------*/using System;using System.Collections.Generic;using System.Linq;using System.Web;using Deepleo.Weixin.SDK;using System.Text;using System.Text.RegularExpressions;namespace Deepleo.Weixin{ public class WeixinExecutor : IWeixinExecutor { public WeixinExecutor() { } public string Execute(WeixinMessage message) { var result = ""; string openId = message.Body.FromUserName.Value; var myUserName = message.Body.ToUserName.Value; switch (message.Type) { case WeixinMessageType.Text: string userMessage = message.Body.Content.Value; result = RepayText(openId, myUserName, "欢迎使用"); break; case WeixinMessageType.Event: string eventType = message.Body.Event.Value.ToLower(); string eventKey = message.Body.EventKey.Value; switch (eventType) { case "subscribe": result = RepayText(openId, myUserName, "欢迎订阅"); break; case "unsubscribe": result = RepayText(openId, myUserName, "欢迎再来"); break; case "scan": result = RepayText(openId, myUserName, "欢迎使用"); break; case "location"://用户进入应用时记录用户地理位置 #region location var lat = message.Body.Latitude.Value.ToString(); var lng = message.Body.Longitude.Value.ToString(); var pcn = message.Body.Precision.Value.ToString(); #endregion break; case "click": switch (eventKey)//refer to： Recources/menu.json { case "myaccount": #region 我的账户 result = RepayText(openId, myUserName, "我的账户."); #endregion break; default: result = string.Format("<xml><ToUserName><![CDATA[{0}]]></ToUserName>" + "<FromUserName><![CDATA[{1}]]></FromUserName>" + "<CreateTime>{2}</CreateTime>" + "<MsgType><![CDATA[text]]></MsgType>" + "<Content><![CDATA[{3}]]></Content>" + "</xml>", openId, myUserName, DateTime.Now.ToBinary(), "没有响应菜单事件"); break; } break; } break; default: result = string.Format("<xml><ToUserName><![CDATA[{0}]]></ToUserName>" + "<FromUserName><![CDATA[{1}]]></FromUserName>" + "<CreateTime>{2}</CreateTime>" + "<MsgType><![CDATA[text]]></MsgType>" + "<Content><![CDATA[{3}]]></Content>" + "</xml>", openId, myUserName, DateTime.Now.ToBinary(), string.Format("未处理消息类型:{0}", message.Type)); break; } return result; } private string RepayText(string toUserName, string fromUserName, string content) { return string.Format("<xml><ToUserName><![CDATA[{0}]]></ToUserName>" + "<FromUserName><![CDATA[{1}]]></FromUserName>" + "<CreateTime>{2}</CreateTime>" + "<MsgType><![CDATA[text]]></MsgType>" + "<Content><![CDATA[{3}]]></Content>" + "</xml>", toUserName, fromUserName, DateTime.Now.ToBinary(), content); } private string RepayNews(string toUserName, string fromUserName, List<WeixinNews> news) { var couponesBuilder = new StringBuilder(); couponesBuilder.Append(string.Format("<xml><ToUserName><![CDATA[{0}]]></ToUserName>" + "<FromUserName><![CDATA[{1}]]></FromUserName>" + "<CreateTime>{2}</CreateTime>" + "<MsgType><![CDATA[news]]></MsgType>" + "<ArticleCount>{3}</ArticleCount><Articles>", toUserName, fromUserName, DateTime.Now.ToBinary(), news.Count )); foreach (var c in news) { couponesBuilder.Append(string.Format("<item><Title><![CDATA[{0}]]></Title>" + "<Description><![CDATA[{1}]]></Description>" + "<PicUrl><![CDATA[{2}]]></PicUrl>" + "<Url><![CDATA[{3}]]></Url>" + "</item>", c.Title, c.Description, c.PicUrl, c.Url )); } couponesBuilder.Append("</Articles></xml>"); return couponesBuilder.ToString(); } } public class WeixinNews { public string Title { set; get; } public string Description { set; get; } public string PicUrl { set; get; } public string Url { set; get; } }}以上就是分享一篇基于.NET的微信SDK的详细内容，更多请关注php中文网其它相关文章！ |
