In the previous article, the overall framework has been built and the entrance verification has been implemented. After the verification is passed, it is handed over to the LookMsgType method. The LookMsgType method mainly decomposes different messages sent by WeChat, and different types are handed over to the business logic. Different methods are used to process the layers. To judge different types of messages, you can use if or switch. Generally speaking, it is better to use switch if there are more than 5 ifs. The LookMsgType method is posted here:

public?void?LookMsgType(string?msgType)
????????{

????????????#region?判斷消息類型
????????????switch?(msgType)
????????????{
????????????????case?"text":
????????????????????RText?mText?=?new?RText();
????????????????????mText?=?ReadXml.GetModel<rtext>(mText,?xmlModel);
????????????????????BLLWei.DoText(dbHome,?mText);//文本消息
????????????????????break;
????????????????case?"image":
????????????????????RImg?mImg?=?new?RImg();
????????????????????mImg?=?ReadXml.GetModel<rimg>(mImg,?xmlModel);
????????????????????BLLWei.DoImg(dbHome,mImg);//圖片
????????????????????break;
????????????????case?"voice":?//聲音
????????????????????RVoice?mVoice?=?new?RVoice();
????????????????????mVoice?=?ReadXml.GetModel<rvoice>(mVoice,?xmlModel);
????????????????????BLLWei.DoVoice(dbHome,mVoice);
????????????????????break;

????????????????case?"video"://視頻
????????????????????RVideo?mVideo?=?new?RVideo();
????????????????????mVideo?=?ReadXml.GetModel<rvideo>(mVideo,?xmlModel);
????????????????????BLLWei.DoVideo(dbHome,?mVideo);
????????????????????break;

????????????????case?"location"://地理位置
????????????????????RLocation?mLocation?=?new?RLocation();
????????????????????mLocation?=?ReadXml.GetModel<rlocation>(mLocation,?xmlModel);
????????????????????BLLWei.DoLocation(dbHome,mLocation);
????????????????????break;
????????????????case?"link"://鏈接
????????????????????RLink?mLink?=?new?RLink();
????????????????????mLink?=?ReadXml.GetModel<rlink>(mLink,?xmlModel);
????????????????????BLLWei.DoLink(dbHome,mLink);
????????????????????break;
????????????????#region?事件
????????????????case?"event":

????????????????????switch?(ReadXml.ReadModel("Event",?xmlModel))
????????????????????{
????????????????????????case?"subscribe":

????????????????????????????if?(ReadXml.ReadModel("EventKey",?xmlModel).IndexOf("qrscene_")?>=?0)
????????????????????????????{
????????????????????????????????RCodeNotSub?mNotSub?=?new?RCodeNotSub();
????????????????????????????????mNotSub?=?ReadXml.GetModel<rcodenotsub>(mNotSub,?xmlModel);
????????????????????????????????BLLWei.DoCodeNotSub(dbHome,mNotSub);//未關(guān)注的新用戶，掃描帶參數(shù)的二維碼關(guān)注
????????????????????????????}
????????????????????????????else
????????????????????????????{
????????????????????????????????RSub?mSub?=?new?RSub();
????????????????????????????????mSub?=?ReadXml.GetModel<rsub>(mSub,?xmlModel);
????????????????????????????????BLLWei.DoSub(dbHome,mSub);//普通關(guān)注
????????????????????????????}
????????????????????????????break;
????????????????????????case?"unsubscribe":
????????????????????????????RUnsub?mUnSub?=?new?RUnsub?();
????????????????????????????mUnSub?=?ReadXml.GetModel<runsub>(mUnSub,?xmlModel);
????????????????????????????BLLWei.DoUnSub(dbHome,mUnSub);//取消關(guān)注
????????????????????????????break;

????????????????????????case?"SCAN":
????????????????????????????RCodeSub?mCodeSub?=?new?RCodeSub();
????????????????????????????mCodeSub?=?ReadXml.GetModel<rcodesub>(mCodeSub,?xmlModel);
????????????????????????????BLLWei.DoCodeSub(dbHome,mCodeSub);//已經(jīng)關(guān)注的用戶掃描帶參數(shù)的二維碼
????????????????????????????break;
????????????????????????case?"LOCATION"://用戶上報(bào)地理位置

????????????????????????????RSubLocation?mSubLoc?=?new?RSubLocation();
????????????????????????????mSubLoc?=?ReadXml.GetModel<rsublocation>(mSubLoc,?xmlModel);

????????????????????????????BLLWei.DoSubLocation(dbHome,?mSubLoc);
????????????????????????????break;
????????????????????????case?"CLICK"://自定義菜單點(diǎn)擊

????????????????????????????RMenuClick?mMenuClk?=?new?RMenuClick();
????????????????????????????mMenuClk?=?ReadXml.GetModel<rmenuclick>(mMenuClk,?xmlModel);
????????????????????????????BLLWei.DoMenuClick(dbHome,?mMenuClk);
????????????????????????????break;
????????????????????????case?"VIEW"://自定義菜單跳轉(zhuǎn)事件

????????????????????????????RMenuView?mMenuVw?=?new?RMenuView();
????????????????????????????mMenuVw?=?ReadXml.GetModel<rmenuview>(mMenuVw,?xmlModel);
????????????????????????????BLLWei.DoMenuView(dbHome,?mMenuVw);
????????????????????????????break;
????????????????????};
????????????????????break;
????????????????#endregion
????????????}
????????????#endregion
????????}</rmenuview></rmenuclick></rsublocation></rcodesub></runsub></rsub></rcodenotsub></rlink></rlocation></rvideo></rvoice></rimg></rtext>

The outer layer switch determines the msgtype. When the event type is used, switch again to determine the specific event type (follow, unfollow, custom menu event, etc.). At this point, all messages sent by WeChat have been processed. Above The message model and the ReadXml.GetModel method are used in the code to assign values ??to the model. After the assignment, the values ??are passed to the corresponding methods of the business logic layer for processing. The methods for message encapsulation and assignment to the model are written below.

1. Message encapsulation:

Encapsulate all messages sent by WeChat, create a Receive folder and a send folder in the datamodel, and create classes corresponding to the messages in them. After completion, the complete datamodel class library is as shown below:

Example

-----Receive message:

Text message RText .cs

public?class?RText
????{
????????public?string?ToUserName?{?get;?set;?}//?開發(fā)者微信號
????????public?string?FromUserName?{?get;?set;?}//?用戶號（OpenID）
????????public?long?CreateTime?{?get;?set;?}//?創(chuàng)建時(shí)間
????????public?string?MsgType?{?get;?set;?}?//消息類型
????????public?string?Content?{?get;?set;?}//內(nèi)容
????????public?long?MsgId?{?get;?set;?}//消息ID

????}

Customize the menu and click RMenuClick.cs

public?class?RMenuClick
????{
????????public?string?ToUserName?{?get;?set;?}//?開發(fā)者微信號
????????public?string?FromUserName?{?get;?set;?}//?用戶號（OpenID）
????????public?long?CreateTime?{?get;?set;?}//?創(chuàng)建時(shí)間
????????public?string?MsgType?{?get;?set;?}?//消息類型

????????public?string?Event?{?get;?set;?}//事件類型
????????public?string?EventKey?{?get;?set;?}//事件key
????????
????}

Others are similar and will not be listed one by one.

-----Send message

Send text message SText.cs

public?class?SText
????{



????????public?string?ToUserName?{?get;?set;?}//?用戶號（OpenID）
????????public?string?FromUserName?{?get;?set;?}//?開發(fā)者微信號

????????public?long?CreateTime?{?get;?set;?}//?創(chuàng)建時(shí)間

????????public?string?MsgType?{?get?{?return?"text";?}?}?//消息類型

????????public?string?Content?{?get;?set;?}//內(nèi)容


????}

SText

Send graphic message SNews.cs

namespace?DataModel.Send
{
????public?class?SNews
????{
????????public?string?ToUserName?{?get;?set;?}//?用戶號（OpenID）
????????public?string?FromUserName?{?get;?set;?}//?開發(fā)者微信號

????????public?long?CreateTime?{?get;?set;?}//?創(chuàng)建時(shí)間

????????public?string?MsgType?{?get?{?return?"news";?}?}?//消息類型

????????public?int?ArticleCount?{?get;?set;?}//圖文個(gè)數(shù)

????????public?List<articlesmodel>?Articles?{?get;?set;?}//圖文列表
????}
????public?class?ArticlesModel?//默認(rèn)第一條大圖顯示
????{
????????public?string?Title?{?get;?set;?}//標(biāo)題
????????public?string?Description?{?get;?set;?}//描述
????????public?string?PicUrl?{?get;?set;?}//圖片鏈接??
????????public?string?Url?{?get;?set;?}//點(diǎn)擊之后跳轉(zhuǎn)的鏈接

????}
}</articlesmodel>

When sending graphic messages, because there are multiple specific graphic contents (up to 10) in the graphic message replied to WeChat, there will be a separate ArticlesModel. The following article will describe the sending of graphic messages.

2. Assign values ??to the model through reflection

At the entry point written in the previous article, there is already a method of parsing xml, and now the message is encapsulated. The usual approach is to use it every time The corresponding model is assigned by manually writing code. In the LookMsgType method here, I use the same method of ReadXml.GetModel when assigning values ??to messages. What is used here is reflection. The method is as follows:

///?<summary>
????????///?通過反射給接收消息model賦值
????????///?</summary>
????????///?<typeparam></typeparam>
????????///?<param>
????????///?<returns></returns>
????????public?static?T?GetModel<t>(T?model,?Dictionary<string>?xmlModel)?where?T?:?class
????????{
????????????var?m?=?model.GetType();
????????????foreach?(PropertyInfo?p?in?m.GetProperties())
????????????{
????????????????string?name?=?p.Name;
????????????????if?(xmlModel.Keys.Contains(name))
????????????????{
????????????????????string?value=xmlModel.Where(x?=>?x.Key?==?name).FirstOrDefault().Value;
????????????????????p.SetValue(model,
????????????????????string.IsNullOrEmpty(value)???null?:?Convert.ChangeType(value,?p.PropertyType),?null);?
????????????????}
????????????}
????????????return?model;
????????}</string></t>

T model is The message class to be used, xmlmodel, is the parsed xml information sent by WeChat that is passed in at the entrance. In this way, there is no need to manually write code and assign values ??every time.

Okay, this article implements the lookmsgtype method, implements message encapsulation and reflection assignment, and then comes the processing and specific implementation in the business logic layer...

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