上一篇说到配置和验证《C#微信开发之旅--准备阶段》
下面来实现一下简单的信息回复。
也就是接收XML，返回XML
可以去看下微信开发文档的说明：http://mp.weixin.qq.com/wiki/10/79502792eef98d6e0c6e1739da387346.html
根据请求的信息类型，创建了一个信息请求类：(忘记从哪里拷贝过来的了)
//微信请求类
public class RequestXML
{
private String toUserName = String.Empty; /// <summary>
/// 公众号
/// </summary>
public String ToUserName
{
get { return toUserName; }
set { toUserName = value; }
} private String fromUserName = ""; /// <summary>
/// 发送方微信号
/// </summary>
public String FromUserName
{
get { return fromUserName; }
set { fromUserName = value; }
} private String createTime = String.Empty; /// <summary>
/// 创建时间
/// </summary>
public String CreateTime
{
get { return createTime; }
set { createTime = value; }
} private String msgType = String.Empty; /// <summary>
/// 信息类型 地理位置:location,文本消息:text,消息类型:image
/// </summary>
public String MsgType
{
get { return msgType; }
set { msgType = value; }
} private String content = String.Empty; /// <summary>
/// 信息内容
/// </summary>
public String Content
{
get { return content; }
set { content = value; }
} private String location_X = String.Empty; /// <summary>
/// 地理位置纬度
/// </summary>
public String Location_X
{
get { return location_X; }
set { location_X = value; }
} private String location_Y = String.Empty; /// <summary>
/// 地理位置经度
/// </summary>
public String Location_Y
{
get { return location_Y; }
set { location_Y = value; }
} private String scale = String.Empty; /// <summary>
/// 地图缩放大小
/// </summary>
public String Scale
{
get { return scale; }
set { scale = value; }
} private String mapInfo = String.Empty; /// <summary>
/// 地理位置信息
/// </summary>
public String MapInfo
{
get { return mapInfo; }
set { mapInfo = value; }
} private String picUrl = String.Empty; /// <summary>
/// 图片链接
/// </summary>
public String PicUrl
{
get { return picUrl; }
set { picUrl = value; }
} private String _event;
/// <summary>
/// 事件类型
/// </summary>
public String Event
{
get { return _event; }
set { _event = value; }
} private String eventKey;
/// <summary>
/// 事件key
/// </summary>
public String EventKey
{
get { return eventKey; }
set { eventKey = value; }
}
}
1.我们接收XML信息，然后读取其中的信息保存到RequestXML中，然后根据请求类型，返回对应的信息
/// <summary>
/// 接收信息
/// </summary>
/// <param name="postStr"></param>
public void Handle(String postStr)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(postStr); XmlElement rootElement = doc.DocumentElement;
XmlNode MsgType = rootElement.SelectSingleNode("MsgType"); RequestXML requestXML = new RequestXML();
requestXML.ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText;
requestXML.FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText;
requestXML.CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText;
requestXML.MsgType = MsgType.InnerText; if (requestXML.MsgType == "text")
{
requestXML.Content = rootElement.SelectSingleNode("Content").InnerText;
} else if (requestXML.MsgType == "location")
{
requestXML.Location_X = rootElement.SelectSingleNode("Location_X").InnerText;
requestXML.Location_Y = rootElement.SelectSingleNode("Location_Y").InnerText;
requestXML.Scale = rootElement.SelectSingleNode("Scale").InnerText;
requestXML.MapInfo = rootElement.SelectSingleNode("Label").InnerText;
} else if (requestXML.MsgType == "image")
{
requestXML.PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText;
}
else if (requestXML.MsgType == "event")//事件
{
requestXML.Event = rootElement.SelectSingleNode("Event").InnerText;
if (requestXML.Event == "CLICK")//点击事件
{
requestXML.EventKey = rootElement.SelectSingleNode("EventKey").InnerText;
}
else if (requestXML.Event == "subscribe")//订阅
{
}
} ResponseMsg(requestXML);
}
上面已经处理好了请求信息，现在就要对请求作出回复，回复的信息格式也是XML。
具体也可以看下微信开发文档：http://mp.weixin.qq.com/wiki/14/89b871b5466b19b3efa4ada8e577d45e.html
现在就做一个简单的文本回复，就没有弄一个回复类。
/// <summary>
/// 回复消息
/// </summary>
/// <param name="weixinXML"></param>
private void ResponseMsg(RequestXML requestXML)
{
String responseContent = String.Empty; if (requestXML.MsgType == "text")//文本
{
responseContent = FormatTextXML(requestXML.FromUserName, requestXML.ToUserName, "基本回复\r\n" + DateTime.Now.ToString() + "\r\n" + requestXML.FromUserName);
}
HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;
HttpContext.Current.Response.Write(responseContent);
}
上面就是一个简单的文本回复，如果请求的信息是文本的话，我会返回一句话。FormatTextXML就是把封装要返回的XML。
因为我们在开发文档中可以看见，返回的文本信息的话，格式为：
<xml>
<ToUserName><![CDATA[toUser]]></ToUserName>
<FromUserName><![CDATA[fromUser]]></FromUserName>
<CreateTime>12345678</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[你好]]></Content>
</xml>
所以FormatTextXML就这样写了：
/// <summary>
/// 返回格式化文本XML内容
/// </summary>
/// <param name="fromUserName"></param>
/// <param name="toUserName"></param>
/// <param name="content"></param>
/// <returns></returns>
private String FormatTextXML(String fromUserName, String toUserName, String content)
{
return "<xml><ToUserName><![CDATA[" + fromUserName + "]]></ToUserName><FromUserName><![CDATA[" + toUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + content + "]]></Content><FuncFlag>1</FuncFlag></xml>";
}
这样一个简单的文本回复就弄好了！ 你发送文本信息给公众号，就能得到一个回复了。
一点积累一点点！