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; }
}
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