目錄
一、功能介紹
透過(guò)微信公眾平臺(tái)實(shí)現(xiàn)線上客服機(jī)器人功能。主要的功能包括：簡(jiǎn)單對(duì)話、查詢天氣等服務(wù)。
這裡只是提供比較簡(jiǎn)單的功能，重點(diǎn)在於透過(guò)此實(shí)例來(lái)說(shuō)明公眾平臺(tái)的具體研發(fā)過(guò)程。只是一個(gè)簡(jiǎn)單DEMO，如果需要的話可以在此基礎(chǔ)上擴(kuò)展。
當(dāng)然後續(xù)我們也會(huì)推出比較複雜的應(yīng)用實(shí)例。
二、具體實(shí)現(xiàn)
1、提供存取介面
這裡不再贅述，參考上一章，微信公眾帳號(hào)開(kāi)發(fā)教學(xué)（二） 基礎(chǔ)框架搭建
2、簽名認(rèn)證和分發(fā)請(qǐng)求不再贅述，參考上一章，微信公眾帳號(hào)開(kāi)發(fā)教程（二） 基礎(chǔ)框架搭建
3、處理請(qǐng)求，並響應(yīng)
1）關(guān)注
當(dāng)微信用戶關(guān)注公眾帳號(hào)時(shí)，可以給其適當(dāng)?shù)奶崾??？梢允菤g迎詞，可以是幫助提示。
直接上代碼：
????class?EventHandler?:?IHandler
????{????????///?<summary>
????????///?請(qǐng)求的xml????????///?</summary>
????????private?string?RequestXml?{?get;?set;?}????????///?<summary>
????????///?構(gòu)造函數(shù)????????///?</summary>
????????///?<param name="requestXml"></param>
????????public?EventHandler(string?requestXml)
????????{????????????this.RequestXml?=?requestXml;
????????}????????///?<summary>
????????///?處理請(qǐng)求????????///?</summary>
????????///?<returns></returns>
????????public?string?HandleRequest()
????????{????????????string?response?=?string.Empty;
????????????EventMessage?em?=?EventMessage.LoadFromXml(RequestXml);????????????if?(em.Event.Equals("subscribe",StringComparison.OrdinalIgnoreCase))
????????????{????????????????//回復(fù)歡迎消息
????????????????TextMessage?tm?=?new?TextMessage();
????????????????tm.ToUserName?=?em.FromUserName;
????????????????tm.FromUserName?=?em.ToUserName;
????????????????tm.CreateTime?=?Common.GetNowTime();
????????????????tm.Content?=?"歡迎您關(guān)注***，我是大哥大，有事就問(wèn)我，呵呵！\n\n";
????????????????response?=?tm.GenerateContent();
????????????}????????????return?response;
????????}
????}
?2）問(wèn)候
簡(jiǎn)單的交流問(wèn)候，例如你好、幫助等等，跟我們使用微信聊天一樣，不過(guò)回應(yīng)是由我們的程序響應(yīng)。具體功能，可以依照自己的需求進(jìn)行添加。
微信本來(lái)就是溝通的平臺(tái)。這個(gè)案例，可以用於線上服務(wù)機(jī)器人，類(lèi)似淘寶的客服機(jī)器人，可是我們這個(gè)是微信版的。呵呵其實(shí)，很簡(jiǎn)單，取得請(qǐng)求訊息，根據(jù)關(guān)鍵字來(lái)匹配回應(yīng)。當(dāng)然這裡可能要做的工作很多，如何支援智慧匹配，如何支援模糊匹配等。
程式碼如下：
????///?<summary>
????///?文本信息處理類(lèi)????///?</summary>
????public?class?TextHandler?:?IHandler
????{????????///?<summary>
????????///?請(qǐng)求的XML????????///?</summary>
????????private?string?RequestXml?{?get;?set;?}????????///?<summary>
????????///?構(gòu)造函數(shù)????????///?</summary>
????????///?<param name="requestXml">請(qǐng)求的xml</param>
????????public?TextHandler(string?requestXml)
????????{????????????this.RequestXml?=?requestXml;
????????}????????///?<summary>
????????///?處理請(qǐng)求????????///?</summary>
????????///?<returns></returns>
????????public?string?HandleRequest()
????????{????????????string?response?=?string.Empty;
????????????TextMessage?tm?=?TextMessage.LoadFromXml(RequestXml);????????????string?content?=?tm.Content.Trim();????????????if?(string.IsNullOrEmpty(content))
????????????{
????????????????response?=?"您什么都沒(méi)輸入，沒(méi)法幫您啊，%>_<%。";
????????????}????????????else
????????????{????????????????if?(content.StartsWith("tq",?StringComparison.OrdinalIgnoreCase))
????????????????{????????????????????string?cityName?=?content.Substring(2).Trim();
????????????????????response?=?WeatherHelper.GetWeather(cityName);
????????????????}????????????????else
????????????????{
????????????????????response?=?HandleOther(content);
????????????????}
????????????}
????????????tm.Content?=?response;????????????//進(jìn)行發(fā)送者、接收者轉(zhuǎn)換
????????????string?temp?=?tm.ToUserName;
????????????tm.ToUserName?=?tm.FromUserName;
????????????tm.FromUserName?=?temp;
????????????response?=?tm.GenerateContent();????????????return?response;
????????}????????///?<summary>
????????///?處理其他消息????????///?</summary>
????????///?<param name="tm"></param>
????????///?<returns></returns>
????????private?string?HandleOther(string?requestContent)
????????{????????????string?response?=?string.Empty;????????????if?(requestContent.Contains("你好")?||?requestContent.Contains("您好"))
????????????{
????????????????response?=?"您也好~";
????????????}????????????else?if?(requestContent.Contains("傻"))
????????????{
????????????????response?=?"我不傻！哼~?";
????????????}????????????else?if?(requestContent.Contains("逼")?||?requestContent.Contains("操"))
????????????{
????????????????response?=?"哼，你說(shuō)臟話！?";
????????????}????????????else?if?(requestContent.Contains("是誰(shuí)"))
????????????{
????????????????response?=?"我是大哥大，有什么能幫您的嗎？~";
????????????}????????????else?if?(requestContent.Contains("再見(jiàn)"))
????????????{
????????????????response?=?"再見(jiàn)！";
????????????}????????????else?if?(requestContent.Contains("bye"))
????????????{
????????????????response?=?"Bye！";
????????????}????????????else?if?(requestContent.Contains("謝謝"))
????????????{
????????????????response?=?"不客氣！嘿嘿";
????????????}????????????else?if?(requestContent?==?"h"?||?requestContent?==?"H"?||?requestContent.Contains("幫助"))
????????????{
????????????????response?=?@"查詢天氣，輸入tq?城市名稱\拼音\首字母";
????????????}????????????else
????????????{
????????????????response?=?"您說(shuō)的，可惜，我沒(méi)明白啊，試試其他關(guān)鍵字吧。";
????????????}????????????return?response;
????????}
????}
?
3）查詢天氣
這個(gè)功能需要請(qǐng)求實(shí)時(shí)查詢的，請(qǐng)求官方的天氣發(fā)佈網(wǎng)站，然後解析其回傳值，按照我們需要的格式，組織天氣資訊，最後發(fā)送給微信客戶。
採(cǎi)用文字訊息方式處理。用戶請(qǐng)求，只需輸入：tq 城市名稱/拼音/首字母，即可取得訊息。
回覆的訊息：（以北京為例）
北京 2013年11月6日?星期三 今天：(17℃~4℃)晴北風(fēng)4-5級(jí)轉(zhuǎn)3-4級(jí)4-5級(jí)轉(zhuǎn)3-4級(jí) 24小時(shí)穿衣指數(shù):天氣冷，建議著棉服、羽絨服、皮夾克加羊毛衫等冬季服裝。年老體弱者宜著厚棉衣、冬大衣或厚羽絨服。 明天：(14℃~3℃)晴轉(zhuǎn)多云微風(fēng)小于3級(jí) 48小時(shí)穿衣指數(shù):天氣冷，建議著棉服、羽絨服、皮夾克加羊毛衫等冬季服裝。年老體弱者宜著厚棉衣、冬大衣或厚羽絨服。
來(lái)看源碼吧：
????class?WeatherHelper
????{????????///?<summary>
????????///?城市集合字段????????///?</summary>
????????private?static?Dictionary<string, City>?mCities;????????///?<summary>
????????///?城市集合????????///?</summary>
????????public?static?Dictionary<string, City>?Cities
????????{????????????get
????????????{????????????????if?(mCities?==?null)
????????????????{
????????????????????LoadCities();
????????????????}????????????????return?mCities;
????????????}
????????}????????///?<summary>
????????///?加載城市????????///?</summary>
????????private?static?void?LoadCities()
????????{
????????????mCities?=?new?Dictionary<string, City>();
????????????mCities.Clear();
????????????mCities.Add("101010100",?new?City()?{?Code?=?"101010100",?Name?=?"北京",?PinYin?=?"beijing",?FristLetter?=?"bj"?});
????????????mCities.Add("101020100",?new?City()?{?Code?=?"101020100",?Name?=?"上海",?PinYin?=?"shanghai",?FristLetter?=?"sh"?});
????????????mCities.Add("101200101",?new?City()?{?Code?=?"101200101",?Name?=?"武漢",?PinYin?=?"wuhai",?FristLetter?=?"wh"?});
????????????
????????}????????///?<summary>
????????///?獲取城市的天氣????????///?</summary>
????????///?<param name="name">城市名稱、拼音或首字母</param>
????????///?<returns></returns>
????????public?static?string?GetWeather(string?name)
????????{????????????string?result?=?string.Empty;????????????string?cityCode?=?string.Empty;????????????//獲取城市編碼
????????????IEnumerable<string>?codes?=?from?item?in?Cities????????????????????????????????????????where?item.Value?!=?null
??????????????????????????????????????????????&&?(item.Value.Name.Equals(name,?StringComparison.OrdinalIgnoreCase)?
????????????????????????????????????????????????????||?item.Value.PinYin.Equals(name,?StringComparison.OrdinalIgnoreCase)?
????????????????????????????????????????????????????||?item.Value.FristLetter.Equals(name,?StringComparison.OrdinalIgnoreCase))????????????????????????????????????????select?item.Value.Code;????????????if?(codes?!=?null?&&?codes.Count()?>?0)
????????????{
????????????????cityCode?=?codes.First<string>();
????????????}????????????//http請(qǐng)求，獲取天氣
????????????if?(!string.IsNullOrEmpty(cityCode))
????????????{????????????????string?url?=?"http://ipnx.cn/{0}.html";
????????????????url?=?string.Format(url,?cityCode);
????????????????WebRequest?request?=?HttpWebRequest.Create(url);????????????????//超時(shí)時(shí)間為：2秒
????????????????request.Timeout?=?2000;
????????????????request.Credentials?=?CredentialCache.DefaultCredentials;
????????????????WebResponse?response?=?request.GetResponse();
????????????????StreamReader?reader?=?new?StreamReader(response.GetResponseStream(),?Encoding.UTF8);????????????????string?weahterInfo?=?reader.ReadToEnd();????????????????if?(string.IsNullOrEmpty(weahterInfo))
????????????????{
????????????????????result?=?"暫時(shí)沒(méi)有取到天氣數(shù)據(jù),請(qǐng)稍后再試";
????????????????}????????????????else
????????????????{
????????????????????XmlDocument?doc?=?JsonConvert.DeserializeXmlNode(weahterInfo);????????????????????if?(doc?!=?null)
????????????????????{
????????????????????????XmlNode?node?=?doc.DocumentElement;????????????????????????if?(node?!=?null)
????????????????????????{
????????????????????????????StringBuilder?builder?=?new?StringBuilder();
????????????????????????????builder.Append(node["city"].InnerText).Append("\n");
????????????????????????????builder.Append(node["date_y"].InnerText).Append("?").Append(node["week"].InnerText).Append("\n");
????????????????????????????builder.Append("今天：").Append("(").Append(node["temp1"].InnerText).Append(")").Append(node["weather1"].InnerText).Append(node["wind1"].InnerText).Append(node["fl1"].InnerText).Append("\n");
????????????????????????????builder.Append("24小時(shí)穿衣指數(shù):").Append(node["index_d"].InnerText).Append("\n");
????????????????????????????builder.Append("明天：").Append("(").Append(node["temp2"].InnerText).Append(")").Append(node["weather2"].InnerText).Append(node["wind2"].InnerText).Append(node["fl2"].InnerText).Append("\n");
????????????????????????????builder.Append("48小時(shí)穿衣指數(shù):").Append(node["index48_d"].InnerText).Append("\n");
????????????????????????????result?=?builder.ToString();
????????????????????????}
????????????????????}????????????????????#region?天氣json數(shù)據(jù)格式????????????????????/*
?????????????????
????????????????{
???"weatherinfo":?{
???????"city":?"北京",?
???????"city_en":?"beijing",?
???????"date_y":?"2013年11月4日",?
???????"date":?"",?
???????"week":?"星期一",?
???????"fchh":?"11",?
???????"cityid":?"101010100",?
???????"temp1":?"17℃~5℃",?
???????"temp2":?"16℃~5℃",?
???????"temp3":?"18℃~4℃",?
???????"temp4":?"17℃~5℃",?
???????"temp5":?"14℃~6℃",?
???????"temp6":?"14℃~2℃",?
???????"tempF1":?"62.6℉~41℉",?
???????"tempF2":?"60.8℉~41℉",?
???????"tempF3":?"64.4℉~39.2℉",?
???????"tempF4":?"62.6℉~41℉",?
???????"tempF5":?"57.2℉~42.8℉",?
???????"tempF6":?"57.2℉~35.6℉",?
???????"weather1":?"晴轉(zhuǎn)多云",?
???????"weather2":?"多云",?
???????"weather3":?"多云轉(zhuǎn)晴",?
???????"weather4":?"晴轉(zhuǎn)多云",?
???????"weather5":?"多云轉(zhuǎn)陰",?
???????"weather6":?"陰轉(zhuǎn)晴",?
???????"img1":?"0",?
???????"img2":?"1",?
???????"img3":?"1",?
???????"img4":?"99",?
???????"img5":?"1",?
???????"img6":?"0",?
???????"img7":?"0",?
???????"img8":?"1",?
???????"img9":?"1",?
???????"img10":?"2",?
???????"img11":?"2",?
???????"img12":?"0",?
???????"img_single":?"0",?
???????"img_title1":?"晴",?
???????"img_title2":?"多云",?
???????"img_title3":?"多云",?
???????"img_title4":?"多云",?
???????"img_title5":?"多云",?
???????"img_title6":?"晴",?
???????"img_title7":?"晴",?
???????"img_title8":?"多云",?
???????"img_title9":?"多云",?
???????"img_title10":?"陰",?
???????"img_title11":?"陰",?
???????"img_title12":?"晴",?
???????"img_title_single":?"晴",?
???????"wind1":?"微風(fēng)",?
???????"wind2":?"微風(fēng)",?
???????"wind3":?"微風(fēng)",?
???????"wind4":?"微風(fēng)",?
???????"wind5":?"微風(fēng)",?
???????"wind6":?"北風(fēng)4-5級(jí)",?
???????"fx1":?"微風(fēng)",?
???????"fx2":?"微風(fēng)",?
???????"fl1":?"小于3級(jí)",?
???????"fl2":?"小于3級(jí)",?
???????"fl3":?"小于3級(jí)",?
???????"fl4":?"小于3級(jí)",?
???????"fl5":?"小于3級(jí)",?
???????"fl6":?"4-5級(jí)",?
???????"index":?"較冷",?
???????"index_d":?"建議著大衣、呢外套加毛衣、衛(wèi)衣等服裝。體弱者宜著厚外套、厚毛衣。因晝夜溫差較大，注意增減衣服。",?
???????"index48":?"冷",?
???????"index48_d":?"天氣冷，建議著棉服、羽絨服、皮夾克加羊毛衫等冬季服裝。年老體弱者宜著厚棉衣、冬大衣或厚羽絨服。",?
???????"index_uv":?"中等",?
???????"index48_uv":?"弱",?
???????"index_xc":?"適宜",?
???????"index_tr":?"適宜",?
???????"index_co":?"舒適",?
???????"st1":?"17",?
???????"st2":?"5",?
???????"st3":?"17",?
???????"st4":?"5",?
???????"st5":?"18",?
???????"st6":?"6",?
???????"index_cl":?"適宜",?
???????"index_ls":?"適宜",?
???????"index_ag":?"極不易發(fā)"
???}
}????????????????*/
????????????????????#endregion
????????????????}
????????????}????????????else
????????????{
????????????????result?=?"沒(méi)有獲取到該城市的天氣,請(qǐng)確定輸入了正確的城市名稱,如\'北京\'或者\(yùn)'beijing\'或者\(yùn)'bj\'";
????????????}????????????//返回
????????????return?result;
????????}????????///?<summary>
????????///?內(nèi)部類(lèi)：城市????????///?</summary>
????????internal?class?City
????????{????????????///?<summary>
????????????///?編碼????????????///?</summary>
????????????public?string?Code?{?get;?set;?}????????????///?<summary>
????????????///?名稱????????????///?</summary>
????????????public?string?Name?{?get;?set;?}????????????///?<summary>
????????????///?拼音????????????///?</summary>
????????????public?string?PinYin?{?get;?set;?}????????????///?<summary>
????????????///?拼音首字母????????????///?</summary>
????????????public?string?FristLetter?{?get;?set;?}
????????}
????}
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