【移动应用开发技术】微信公众号开发之如何实现自动消息回复和自定义菜单

【移动应用开发技术】微信公众号开发之如何实现自动消息回复和自定义菜单

class

EventHandler

:

IHandler

{

///

<summary>

///

请求的xml

///

</summary>

private

string

RequestXml

{

get;

set;

}

///

<summary>

///

构造函数

///

</summary>

///

<param

name="requestXml"></param>

public

EventHandler(string

requestXml)

{

this.RequestXml

=

requestXml;

}

///

<summary>

///

处理请求

///

</summary>

///

<returns></returns>

public

string

HandleRequest()

{

string

response

=

string.Empty;

EventMessage

em

=

EventMessage.LoadFromXml(RequestXml);

if

(em.Event.Equals("subscribe",StringComparison.OrdinalIgnoreCase))

{

//回复欢迎消息

TextMessage

tm

=

new

TextMessage();

tm.ToUserName

=

em.FromUserName;

tm.FromUserName

=

em.ToUserName;

tm.CreateTime

=

Common.GetNowTime();

tm.Content

=

"欢迎您关注我们，我是服务小二，有事您开口～\n\n";

response

=

tm.GenerateContent();

}

return

response;

}

}关注/取消关注事件

///

<summary>

///

文本信息处理类

///

</summary>

public

class

TextHandler

:

IHandler

{

///

<summary>

///

请求的XML

///

</summary>

private

string

RequestXml

{

get;

set;

}

///

<summary>

///

构造函数

///

</summary>

///

<param

name="requestXml">请求的xml</param>

public

TextHandler(string

requestXml)

{

this.RequestXml

=

requestXml;

}

///

<summary>

///

处理请求

///

</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

=

"您什么都没输入，没法帮您啊，%>_<%。";

}

else

{

if

(content.StartsWith("tq",

StringComparison.OrdinalIgnoreCase))

{

string

cityName

=

content.Substring(2).Trim();

response

=

WeatherHelper.GetWeather(cityName);

}

else

{

response

=

HandleOther(content);

}

}

tm.Content

=

response;

//进行发送者、接收者转换

string

temp

=

tm.ToUserName;

tm.ToUserName

=

tm.FromUserName;

tm.FromUserName

=

temp;

response

=

tm.GenerateContent();

return

response;

}

///

<summary>

///

处理其他消息

///

</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("shit")

||

requestContent.Contains("小王八蛋"))

{

response

=

"哼，你说脏话！

";

}

else

if

(requestContent.Contains("是谁"))

{

response

=

"我是大哥大，有什么能帮您的吗？~";

}

else

if

(requestContent.Contains("再见"))

{

response

=

"再见！";

}

else

if

(requestContent.Contains("bye"))

{

response

=

"Bye！";

}

else

if

(requestContent.Contains("谢谢"))

{

response

=

"不客气！嘿嘿";

}

else

if

(requestContent

==

"h"

||

requestContent

==

"H"

||

requestContent.Contains("帮助"))

{

response

=

@"有事找警察";

}

else

{

response

=

"您说的，可惜，我没明白啊，试试其他关键字吧。";

}

return

response;

}

}/upload/information/20201208/260/13842.jpg/upload/information/20201208/260/13844.jpg接口调用请求说明

{

"button":[

{

"type":"click",

"name":"今日歌曲",

"key":"V1001_TODAY_MUSIC"

},

{

"name":"菜单",

"sub_button":[

{

"type":"view",

"name":"搜索",

"url":"/"

},

{

"type":"view",

"name":"视频",

"url":"/"

},

{

"type":"click",

"name":"赞一下我们",

"key":"V1001_GOOD"

}]

}]

}参数说明1、首先获取access_token接口调用请求说明http请求方式:

GET

/cgi-bin/menu/create?access_token=ACCESS_TOKEN参数说明返回说明{"access_token":"ACCESS_TOKEN","expires_in":7200}{"errcode":40013,"errmsg":"invalid

appid"}创建自定义菜单3、查询菜单请求说明http请求方式：GET

/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET返回说明对应创建接口，正确的Json返回结果:

{"menu":{"button":[{"type":"click","name":"今日歌曲","key":"V1001_TODAY_MUSIC","sub_button":[]},{"type":"click","name":"歌手简介","key":"V1001_TODAY_SINGER","sub_button":[]},{"name":"菜单","sub_button":[{"type":"view","name":"搜索","url":"/","sub_button":[]},{"type":"view","name":"视频","url":"/","sub_button":[]},{"type":"click","name":"赞一下我们","key":"V1001_GOOD","sub_button":[]}]}]}}4、删除菜单请求说明http请求方式：GET

/cgi-bin/menu/get?access_token=ACCESS_TOKEN返回说明对应创建接口，正确的Json返回结果:

{"errcode":0,"errmsg":"ok"}5、事件处理<xml>

<ToUserName><![CDATA[toUser]]></ToUserName>

<FromUserName><![CDATA[FromUser]]></FromUserName>

<CreateTime>123456789</CreateTime>

<MsgType><![CDATA[event]]></MsgType>

<Event><![CDATA[CLICK]]></Event>

<EventKey><![CDATA[EVENTKEY]]></EventKey>

</xml>实例讲解1、获取access_token注意：access_token有过期时间，如果过期，需要重新获取。private

static

DateTime

GetAccessToken_Time;

///

<summary>

///

过期时间为7200秒

///

</summary>

private

static

int

Expires_Period

=

7200;

///

<summary>

///

///

</summary>

private

static

string

mAccessToken;

///

<summary>

///

///

</summary>

public

static

string

AccessToken

{

get

{

//如果为空，或者过期，需要重新获取

if

(string.IsNullOrEmpty(mAccessToken)

||

HasExpired())

{

//获取

mAccessToken

=

GetAccessToken(AppID,

AppSecret);

}

return

mAccessToken;

}

}

///

<summary>

///

///

</summary>

///

<param

name="appId"></param>

///

<param

name="appSecret"></param>

///

<returns></returns>

private

static

string

GetAccessToken(string

appId,

string

appSecret)

{

string

url

=

string.Format("/cgi-bin/token?grant_type=client_credential&appid={0}&secret={1}",

appId,

appSecret);

string

result

=

HttpUtility.GetData(url);

XDocument

doc

=

XmlUtility.ParseJson(result,

"root");

XElement

root

=

doc.Root;

if

(root

!=

null)

{

XElement

access_token

=

root.Element("access_token");

if

(access_token

!=

null)

{

GetAccessToken_Time

=

DateTime.Now;

if

(root.Element("expires_in")!=null)

{

Expires_Period

=

int.Parse(root.Element("expires_in").Value);

}

return

access_token.Value;

}

else

{

GetAccessToken_Time

=

DateTime.MinValue;

}

}

return

null;

}

///

<summary>

///

判断Access_token是否过期

///

</summary>

///

<returns>bool</returns>

private

static

bool

HasExpired()

{

if

(GetAccessToken_Time

!=

null)

{

//过期时间，允许有一定的误差，一分钟。获取时间消耗

if

(DateTime.Now

>

GetAccessToken_Time.AddSeconds(Expires_Period).AddSeconds(-60))

{

return

true;

}

}

return

false;

}2、设置菜单具体菜单如下：{

"button":

[

{

"name":

"测试跳转",

"sub_button":

[

{

"type":

"view",

"name":

"搜索",

"url":

"/"

},

{

"type":

"view",

"name":

"视频",

"url":

"/"

},

{

"type":

"click",

"name":

"赞一下我们",

"key":

"BTN_GOOD"

}

]

},

{

"type":

"view",

"name":

"设备状态",

"url":

"/weixin"

},

{

"type":

"click",

"name":

"帮助",

"key":

"BTN_HELP"

}

]

}3、管理菜单实现代码如下：public

class

MenuManager

{

///

<summary>

///

菜单文件路径

///

</summary>

private

static

readonly

string

Menu_Data_Path

=

System.AppDomain.CurrentDomain.BaseDirectory

+

"/Data/menu.txt";

///

<summary>

///

获取菜单

///

</summary>

public

static

string

GetMenu()

{

string

url

=

string.Format("/{0}",

Context.AccessToken);

return

HttpUtility.GetData(url);

}

///

<summary>

///

创建菜单

///

</summary>

public

static

void

CreateMenu(string

menu)

{

string

url

=

string.Format("/{0}",

Context.AccessToken);

//string

menu

=

FileUtility.Read(Menu_Data_Path);

HttpUtility.SendHttpRequest(url,

menu);

}

///

<summary>

///

删除菜单

///

</summary>

public

static

void

DeleteMenu()

{

string

url

=

string.Format("/{0}",

Context.AccessToken);

HttpUtility.GetData(url);

}

///

<summary>

///

加载菜单

///

</summary>

///

<returns></returns>

public

static

string

LoadMenu()

{

return

FileUtility.Read(Menu_Data_Path);

}

}4、基本方法using

System;using

System.Collections.Generic;using

System.IO;using

System.Linq;using

System.Net;using

System.Text;using

System.Threading.Tasks;namespace

WeChat.Utility

{

///

<summary>

///

帮助类

///

</summary>

class

HttpUtility

{

///

<summary>

///

发送请求

///

</summary>

///

<param

name="url">Url地址</param>

///

<param

name="data">数据</param>

public

static

string

SendHttpRequest(string

url,

string

data)

{

return

SendPostHttpRequest(url,

"application/x-www-form-urlencoded",

data);

}

///

<summary>

///

///

</summary>

///

<param

name="url"></param>

///

<returns></returns>

public

static

string

GetData(string

url)

{

return

SendGetHttpRequest(url,

"application/x-www-form-urlencoded");

}

///

<summary>

///

发送请求

///

</summary>

///

<param

name="url">Url地址</param>

///

<param

name="method">方法（post或get）</param>

///

<param

name="method">数据类型</param>

///

<param

name="requestData">数据</param>

public

static

string

SendPostHttpRequest(string

url,

string

contentType,

string

requestData)

{

WebRequest

request

=

(WebRequest)HttpWebRequest.Create(url);

request.Method

=

"POST";

byte[]

postBytes

=

null;

request.ContentType

=

contentType;

postBytes

=

Encoding.UTF8.GetBytes(requestData);

request.ContentLength

=

postBytes.Length;

using

(Stream

outstream

=

request.GetRequestStream())

{

outstream.Write(postBytes,

0,

postBytes.Length);

}

string

result

=

string.Empty;

using

(WebResponse

response

=

request.GetResponse())

{

if

(response

!=

null)

{

using

(Stream

stream

=

response.GetResponseStream())

{

using

(StreamReader

reader

=

new

StreamReader(stream,

Encoding.UTF8))

{

result

=

reader.ReadToEnd();

}

}

}

}

return

result;

}

///

<summary>

///

发送请求

///

</summary>

///

<param

name="url">Url地址</param>

///

<param

name="method">方法（post或get）</param>

///

<param

name="method">数据类型</param>

///

<param

name="requestData">数据</param>

public

static

string

SendGetHttpRequest(string

url,

string

contentType)

{

WebRequest

request

=

(WebRequest)HttpWebRequest.Create(url);

request.Method

=

"GET";

request.ContentType

=

contentType;

string

result

=

string.Empty;

using

(WebResponse

response

=

request.GetResponse())

{

if

(response

!=

null)

{

using

(Stream

stream

=

response.GetResponseStream())

{

using

(StreamReader

reader

=

new

StreamReader(stream,

Encoding.UTF8))

{

result

=

reader.ReadToEnd();

}

}

}

}

return

result;

}

}

}class

XmlUtility

{

///

<summary>

///

///

</summary>

///

<param

name="json"></param>

///

<param

name="rootName"></param>

///

<returns></returns>

public

static

XDocument

ParseJson(string

json,string

rootName)

{

return

JsonConvert.DeserializeXNode(json,

rootName);

}

}5、事件处理class

EventHandler

:

IHandler

{

///

<summary>

///

请求的xml

///

</summary>

private

string

RequestXml

{

get;

set;

}

///

<summary>

///

构造函数

///

</summary>

///

<param

name="requestXml"></param>

public

EventHandler(string

requestXml)

{

this.RequestXml

=

requestXml;

}

///

<summary>

///

处理请求

///

</summary>

///

<returns></returns>

public

string

HandleRequest()

{

string

response

=

string.Empty;

EventMessage

em

=

EventMessage.LoadFromXml(RequestXml);

if

(em

!=

null)

{

switch

(em.Event.ToLower())

{

case

("subscribe"):

response

=

SubscribeEventHandler(em);

break;

case

"click":

response

=

ClickEventHandler(em);

break;

}

}

return

response;

}

///

<summary>

///

关注

///

</summary>

///

<param

name="em"></param>

///

<returns></returns>

private

string

SubscribeEventHandler(EventMessage

em)

{

//回复欢迎消息

TextMessage

tm

=

new

TextMessage();

tm.ToUserName

=

em.FromUserName;

tm.FromUserName

=

em.ToUserName;

tm.CreateTime

=

Common.GetNowTime();

tm.Content

=

"欢迎您关注我们，我是服务小二，有事您说话～\n\n";

return

tm.GenerateContent();

}

///

<summary>