【移动应用开发技术】C#实现微信公众号群发消息的案例

【移动应用开发技术】C#实现微信公众号群发消息的案例

这篇文章将为大家详细讲解有关C#实现微信公众号群发消息的案例，在下觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。总体思路：1.首先必须要在微信公众平台上申请一个公众号。2.然后进行模拟登陆。（由于我对http传输原理和编程不是特别懂，在模拟登陆的地方，不是特别清楚，希望有大神指教）3.模拟登陆后会获得一个token（令牌）和cookie。4.因为模拟登陆后相当于就进入了微信公众平台，在这个里面就可以抓取到需要的数据，如公众好友的昵称，fakeId。其中的fakeid非常重要，因为传输数据必须要知道对方的fakeid。5.知道对方的fakeid就可以进行数据的发送了。不过里面还有一些小问题，希望有人继续修改和讨论！也有人说这样会被封号，所以请谨慎操作讲一下我项目里面的主要内容1.WeiXinLogin.cs类是用来执行登陆功能的//对密码进行MD5加密

static

string

GetMd5Str32(string

str)

{

MD5CryptoServiceProvider

md5Hasher

=

new

MD5CryptoServiceProvider();

//

Convert

the

input

string

to

a

byte

array

and

compute

the

hash.

char[]

temp

=

str.ToCharArray();

byte[]

buf

=

new

byte[temp.Length];

for

(int

i

=

0;

i

<

temp.Length;

i++)

{

buf[i]

=

(byte)temp[i];

}

byte[]

data

=

md5Hasher.ComputeHash(buf);

//

Create

a

new

Stringbuilder

to

collect

the

bytes

//

and

create

a

string.

StringBuilder

sBuilder

=

new

StringBuilder();

//

Loop

through

each

byte

of

the

hashed

data

//

and

format

each

one

as

a

hexadecimal

string.

for

(int

i

=

0;

i

<

data.Length;

i++)

{

sBuilder.Append(data[i].ToString("x2"));

}

//

Return

the

hexadecimal

string.

return

sBuilder.ToString();

}

//执行登陆操作

public

static

bool

ExecLogin(string

name,string

pass)

{

bool

result

=

false;

string

password

=

GetMd5Str32(pass).ToUpper();

string

padata

=

"username="

+

name

+

"&pwd="

+

password

+

"&imgcode=&f=json";

string

url

=

"/cgi-bin/login?lang=zh_CN

";//请求登录的URL

try

{

CookieContainer

cc

=

new

CookieContainer();//接收缓存

byte[]

byteArray

=

Encoding.UTF8.GetBytes(padata);

//

转化

HttpWebRequest

webRequest2

=

(HttpWebRequest)WebRequest.Create(url);

//新建一个WebRequest对象用来请求或者响应url

webRequest2.CookieContainer

=

cc;

//保存cookie

webRequest2.Method

=

"POST";

//请求方式是POST

webRequest2.ContentType

=

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

//请求的内容格式为application/x-www-form-urlencoded

webRequest2.ContentLength

=

byteArray.Length;

Stream

newStream

=

webRequest2.GetRequestStream();

//返回用于将数据写入

Internet

资源的

Stream。

//

Send

the

data.

newStream.Write(byteArray,

0,

byteArray.Length);

//写入参数

newStream.Close();

HttpWebResponse

response2

=

(HttpWebResponse)webRequest2.GetResponse();

StreamReader

sr2

=

new

StreamReader(response2.GetResponseStream(),

Encoding.Default);

string

text2

=

sr2.ReadToEnd();

//此处用到了newtonsoft来序列化

WeiXinRetInfo

retinfo

=

Newtonsoft.Json.JsonConvert.DeserializeObject<WeiXinRetInfo>(text2);

string

token

=

string.Empty;

if

(retinfo.ErrMsg.Length

>

0)

{

token

=

retinfo.ErrMsg.Split(new

char[]

{

'&'

})[2].Split(new

char[]

{

'='

})[1].ToString();//取得令牌

LoginInfo.LoginCookie

=

cc;

LoginInfo.CreateDate

=

DateTime.Now;

LoginInfo.Token

=

token;

result

=

true;

}

}

catch

(Exception

ex)

{

throw

new

Exception(ex.StackTrace);

}

return

result;

}

public

static

class

LoginInfo

{

///

<summary>

///

登录后得到的令牌

///

</summary>

public

static

string

Token

{

get;

set;

}

///

<summary>

///

登录后得到的cookie

///

</summary>

public

static

CookieContainer

LoginCookie

{

get;

set;

}

///

<summary>

///

创建时间

///

</summary>

public

static

DateTime

CreateDate

{

get;

set;

}

}2.在WeiXin.cs类中实现发送数据public

static

bool

SendMessage(string

Message,

string

fakeid)

{

bool

result

=

false;

CookieContainer

cookie

=

null;

string

token

=

null;

cookie

=

WeiXinLogin.LoginInfo.LoginCookie;//取得cookie

token

=

WeiXinLogin.LoginInfo.Token;//取得token

string

strMsg

=

System.Web.HttpUtility.UrlEncode(Message);

//对传递过来的信息进行url编码

string

padate

=

"type=1&content="

+

strMsg

+

"&error=false&tofakeid="

+

fakeid

+

"&token="

+

token

+

"&ajax=1";

string

url

=

"/cgi-bin/singlesend?t=ajax-response&lang=zh_CN";

byte[]

byteArray

=

Encoding.UTF8.GetBytes(padate);

//

转化

HttpWebRequest

webRequest2

=

(HttpWebRequest)WebRequest.Create(url);

webRequest2.CookieContainer

=

cookie;

//登录时得到的缓存

webRequest2.Referer

=

"/cgi-bin/singlemsgpage?token="

+

token

+

"&fromfakeid="

+

fakeid

+

"&msgid=&source=&count=20&t=wxm-singlechat&lang=zh_CN";

webRequest2.Method

=

"POST";

webRequest2.UserAgent

=

"Mozilla/5.0

(Windows

NT

5.1;

rv:2.0.1)

Gecko/20100101

Firefox/4.0.1";

webRequest2.ContentType

=

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

webRequest2.ContentLength

=

byteArray.Length;

Stream

newStream

=

webRequest2.GetRequestStream();

//

Send

the

data.

newStream.Write(byteArray,

0,

byteArray.Length);

//写入参数

newStream.Close();

HttpWebResponse

response2

=

(HttpWebResponse)webRequest2.GetResponse();

StreamReader

sr2

=

new

StreamReader(response2.GetResponseStream(),

Encoding.Default);

string

text2

=

sr2.ReadToEnd();

if

(text2.Contains("ok"))

{

result

=

true;

}

return

result;

}3.SendMessage.aspx.cs中主要实现获取fakeidpublic

static

ArrayList

SubscribeMP()

{

try

{

CookieContainer

cookie

=

null;

string

token

=

null;

cookie

=

WeiXinLogin.LoginInfo.LoginCookie;//取得cookie

token

=

WeiXinLogin.LoginInfo.Token;//取得token

/*获取用户信息的url，这里有几个参数给大家讲一下，1.token此参数为上面的token

2.pagesize此参数为每一页显示的记录条数

3.pageid为当前的页数，4.groupid为微信公众平台的用户分组的组id，当然这也是我的猜想不一定正确*/

string

Url

=

"/cgi-bin/contactmanagepage?t=wxm-friend&token="

+

token

+

"&lang=zh_CN&pagesize=10&pageidx=0&type=0&groupid=0";

HttpWebRequest

webRequest2

=

(HttpWebRequest)WebRequest.Create(Url);

webRequest2.CookieContainer

=

cookie;

webRequest2.ContentType

=

"text/html;

charset=UTF-8";

webRequest2.Method

=

"GET";

webRequest2.UserAgent

=

"Mozilla/5.0

(Windows

NT

5.1;

rv:2.0.1)

Gecko/20100101

Firefox/4.0.1";

webRequest2.ContentType

=

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

HttpWebResponse

response2

=

(HttpWebResponse)webRequest2.GetResponse();

StreamReader

sr2

=

new

StreamReader(response2.GetResponseStream(),

Encoding.Default);

string

text2

=

sr2.ReadToEnd();

MatchCollection

mc;

//由于此方法获取过来的信息是一个html网页所以此处使用了正则表