【移動應用開發技術】微信分享后臺接口簡單實現

這篇文章主要介紹了微信分享后臺接口簡單實現，具有一定借鑒價值，感興趣的朋友可以參考下，希望大家閱讀完這篇文章之后大有收獲，下面讓在下帶著大家一起了解一下。此接口大致的流程是：用戶創建時間戳，隨機字符串，當前需要分享的頁面的url三個變量，接著將自己的appid和APPsecret作為請求參數獲取access_token，再根據access_token獲取jsapi_ticket,并將獲取的jsapi-ticket進行加密、校驗以及自己創建的三個變量進行簽名，注意簽名過程案按照key值ASCII碼升序排序封裝成json格式的數據傳送到前臺JS頁面，具體程序如下；public

class

WeiXinShareAction

extends

HttpServlet

{

private

static

final

long

serialVersionUID

=

1L;

private

Integer

main_count

=

888;

private

String

flag

=

"1";

private

Log

logger

=

LogFactory.getLog(this.getClass());

private

String

filePath

=

"/B.txt";

protected

void

doGet(HttpServletRequest

request,

HttpServletResponse

response)

throws

ServletException,

IOException

{

JsonObject

jsonObject

=

new

JsonObject();

String

ticket

=

null;

String[]

wxInfo

=

new

String[]

{

"wx007344f87ae48300",

"5442edc712b6846bdd1c058b7f2318fe"

};

WeiXinUtil

wxu

=

new

WeiXinUtil();

String

ticketResString;

try

{

ticketResString

=

wxu.getShareJsapiTicket(wxInfo);

if

(StringUtils.isNotEmpty(ticketResString))

{

JSONObject

ticketJSONObject

=

JSONObject.fromObject(ticketResString);

if

(ticketJSONObject.getInt("errcode")

==

0)

{

ticket

=

JSONObject.fromObject(ticketResString).getString("ticket");

}

}

}

catch

(Exception

e)

{

e.printStackTrace();

}

if

(StringUtils.isEmpty(ticket))

{

jsonObject.addProperty("errcode",

10002);

jsonObject.addProperty("errmsg",

"ticket_error");

this.responseWrite(jsonObject.toString(),

response);

return;

}

String

noncestr

=

this.createNonceStr();

int

timestamp

=

this.createTimestamp();

String

requestRefererURL

=

request.getHeader("referer");

flag

=

request.getParameter("temp");

("flag"

+

flag);

//這里是保存點擊次數

//沒有數據庫的情況下

保證服務重啟后點擊次數不清零

//利用線程鎖

使用IO流

對點擊次數進行修改保存

Thread_readFile

thf4

=

new

Thread_readFile();

thf4.start();

logger.warn("requestRefererURL:

"

+

requestRefererURL);

String

signature

=

this.createSignature(noncestr,

ticket,

timestamp,

requestRefererURL);

jsonObject.addProperty("countNum",

main_count);//點擊次數

jsonObject.addProperty("errcode",

0);//

jsonObject.addProperty("errmsg",

"");//

jsonObject.addProperty("wxuser",

wxInfo[0]);

//

appId

jsonObject.addProperty("timestamp",

timestamp);//時間戳

jsonObject.addProperty("noncestr",

noncestr);//隨機字符串

jsonObject.addProperty("signature",

signature);//簽名

response.setHeader("Access-Control-Allow-Origin",

"*");

this.responseWrite(jsonObject.toString(),

response);

}

private

void

responseWrite(String

content,

HttpServletResponse

response)

{

try

{

response.setCharacterEncoding("utf-8");

response.getWriter().write(content);

}

catch

(Exception

e)

{

logger.error("responseWrite

error

in

WeiXinShareAction",

e);

}

}

}獲取access_token;這里開發過程中要注意微信為了減輕對服務器的訪問壓力限制了access_token每天的生成次數以及使用時長；由于限制時長為7200s于是做了一個判斷再生成一個token后的2小時用同一個token；這里僅僅只是一個小接口于是選擇將最近一次的生成時間以及token存為靜態變量，

/**

*

微信分享，獲取access_token

*/

private

String

getWeiXinAccessToken(String[]

wxInfo)

throws

Exception

{

//得到當前時間

long

current_time

=

System.currentTimeMillis();

//

每次調用，判斷expires_in是否過期，如果token時間超時，重新獲取，expires_in有效期為7200

if

((current_time

-

last_time)

/

1000

>=

7200)

{

("第一次訪問"+current_time);

("(current_time

-

last_time)

/

1000===="+(current_time

-

last_time)

/

1000);

String

url

=

"/cgi-bin/token?grant_type=client_credential&appid="

+

wxInfo[0]

+

"&secret="

+

wxInfo[1];

String

result

=

this.httpReqExecute(url);

this.logger.warn("from

weixin

api

accessToken:

"

+

result);

try

{

last_time

=

current_time;

if

(StringUtils.isNotEmpty(result))

{

//

解析respContent，并獲取其中的更新的key,

accessToken

=

JSONObject.fromObject(result).getString("access_token");

//

保存access_token

return

accessToken;

}

}

catch

(Exception

e)

{

logger.error("getAccessToken

error

in

WeiXinShareAction",

e);

}

}else{

("第二次訪問"+last_time);

("(current_time

-

last_time)

/

1000===="+(current_time

-

last_time)

/

1000);

("from

weixin

api

accessToken:"+accessToken);

return

accessToken;

}

return

null;

}根據access_token獲取jsapiTicket

/**

*

微信分享，獲取jsapiTicket

*/

public

String

getShareJsapiTicket(String[]

wxInfo)

throws

Exception

{

String

access_Token

=

this.getWeiXinAccessToken(wxInfo);

if

(StringUtils.isEmpty(access_Token))

{

//

獲取

accessToken

失敗

//this.logger.warn(siteId

+

"

accessToken

is

empty.");

JsonObject

jsonObject

=

new

JsonObject();

jsonObject.addProperty("errcode",

"10000");

jsonObject.addProperty("errmsg",

"access_error");

return

jsonObject.toString();

}

String

url

=

"/cgi-bin/ticket/getticket?access_token="

+

access_Token

+

"&type=jsapi";

String

jsapiTicket

=

this.httpReqExecute(url);

this.logger.warn("

from

weixin

api

jsapiTicket

is:

"

+

jsapiTicket);

if

(StringUtils.isNotEmpty(jsapiTicket))

{

return

jsapiTicket;

}

return

null;

}Http遠程調用

private

String

httpReqExecute(String

url)

{

String

result

=

"";

DefaultHttpClient

httpclient

=

null;

try

{

httpclient

=

new

DefaultHttpClient();

HttpPost

httppost

=

new

HttpPost(url);

//

執行

HttpResponse

response

=

httpclient.execute(httppost);

HttpEntity

entity

=

response.getEntity();

if

(entity

!=

null

&&

response.getStatusLine().getStatusCode()

==

200)

{

result

=