【移動應用開發(fā)技術】微信公眾平臺開發(fā)之如何獲取個性二維碼

【移動應用開發(fā)技術】微信公眾平臺開發(fā)之如何獲取個性二維碼

一、功能介紹/upload/information/20201208/260/12775.jpg二、相關接口創(chuàng)建二維碼tickethttp請求方式:

POST

URL:

/cgi-bin/qrcode/create?access_token=TOKENPOST數(shù)據(jù)格式：json

POST數(shù)據(jù)例子：{"expire_seconds":

1800,

"action_name":

"QR_SCENE",

"action_info":

{"scene":

{"scene_id":

123}}}http請求方式:

POST

URL:

/cgi-bin/qrcode/create?access_token=TOKENPOST數(shù)據(jù)格式：json

POST數(shù)據(jù)例子：{"action_name":

"QR_LIMIT_SCENE",

"action_info":

{"scene":

{"scene_id":

123}}}{"ticket":"gQG28DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0FuWC1DNmZuVEhvMVp4NDNMRnNRAAIEesLvUQMECAcAAA==","expire_seconds":1800}{"errcode":40013,"errmsg":"invalid

appid"}通過ticket換取二維碼HTTP

GET請求（請使用https協(xié)議）

/cgi-bin/showqrcode?ticket=TICKETAccept-Ranges:bytes

Cache-control:max-age=604800Connection:keep-alive

Content-Length:28026Content-Type:image/jpg

Date:Wed,

16

Oct

2013

06:37:10

GMT

Expires:Wed,

23

Oct

2013

14:37:10

+0800Server:nginx/1.4.1三、具體實現(xiàn)///

<summary>

///

二維碼管理者

///

</summary>

public

class

DimensionalCodeManager

{

///

<summary>

///

臨時二維碼地址

///

</summary>

///

使用string.format時，報：字符串格式錯誤，因為其中有{

//private

const

string

TEMP_URL

=

"{\"expire_seconds\":

1800,

\"action_name\":

\"QR_SCENE\",

\"action_info\":

{\"scene\":

{\"scene_id\":

{0}}}}";

///

<summary>

///

解決辦法，將原有字符串中的一個{用兩個{代替

///

</summary>

private

const

string

TEMP_JSON_DATA

=

"{{\"expire_seconds\":

1800,

\"action_name\":

\"QR_SCENE\",

\"action_info\":

{{\"scene\":

{{\"scene_id\":

{0}}}}}}}";

///

<summary>

///

永久二維碼地址

///

</summary>

private

const

string

PERMANENT_URL

=

"{{\"action_name\":

\"QR_LIMIT_SCENE\",

\"action_info\":

{{\"scene\":

{{\"scene_id\":

{0}}}}}}}";

///

<summary>

///

獲取ticket的URL

///

</summary>

private

const

string

GET_TICKET_URL

=

"

/cgi-bin/qrcode/create?access_token={0}";

///

<summary>

///

獲取二維碼URL

///

</summary>

private

const

string

GET_CODE_URL

=

"/cgi-bin/showqrcode?ticket={0}";

///

<summary>

///

根據(jù)場景ID獲取ticket

///

</summary>

///

<param

name="sceneID">場景ID</param>

///

<param

name="isTemp">是否是臨時二維碼</param>

///

<returns></returns>

private

static

string

GetTicket(int

sceneID,

bool

isTemp)

{

string

result

=

null;

string

data

=

string.Empty;

if

(isTemp)

{

data

=

string.Format(TEMP_JSON_DATA,

sceneID.ToString());

}

else

{

if

(sceneID

>

0

&&

sceneID

<=

1000)

{

data

=

string.Format(PERMANENT_URL,

sceneID);

}

else

{

//scene_id不合法

return

null;

}

}

string

ticketJson

=

HttpUtility.GetData(string.Format(GET_TICKET_URL,Context.AccessToken));

XDocument

doc

=

XmlUtility.ParseJson(ticketJson,

"root");

XElement

root

=

doc.Root;

if

(root

!=

null)

{

XElement

ticket

=

root.Element("ticket");

if

(ticket

!=

null)

{

result

=

ticket.Value;

}

}

return

result;

}

///

<summary>

///

創(chuàng)建臨時二維碼

///

</summary>

///

<param

name="sceneID">場景id，int類型</param>

///

<returns></returns>

public

static

string

GenerateTemp(int

sceneID)

{

string

ticket

=

GetTicket(sceneID,true);

if

(ticket

==

null)

{

return

null;

}

return

HttpUtility.GetData(string.Format(GET_CODE_URL,

ticket));

}

///

<summary>

///

創(chuàng)建臨時二維碼

///

</summary>

///

<param

name="sceneID">場景id，int類型</param>

///

<returns></returns>

public

static

string

GeneratePermanent(int

sceneID)

{

string

ticket

=