流程 :
服務端請求微信生成config相關參數
客戶端ajax請求服務器獲取參數
config.php
<?php
$appid = 'wx8e66f8993d';
$appsecret = '42190267910b765d37';
index.php
url爲當前調用jssdk的完整網址,前端url編碼
<?php
include 'config.php';
include 'JSSDK.php';
$jssdk = new JSSDK($appid, $appsecret);
$url = $_GET['url'];
$signPackage = $jssdk->getSignPackage($url);
$config = array(
'debug' => true,
'appId' => $signPackage['appId'],
'timestamp' => $signPackage['timestamp'],
'nonceStr' => $signPackage['nonceStr'],
'signature' => $signPackage['signature'],
'jsApiList' => array(
'checkJsApi',
'updateTimelineShareData',
'hideOptionMenu',
'updateAppMessageShareData',
'hideMenuItems',
'showMenuItems'
)
);
echo json_encode(['code' => 0,'data' => $config ,'msg' => 'ok']);
exit;
JSSDK.php
<?php
/**
* @auther: xxf
* Date: 2019/11/8
* Time: 15:59
*/
class JSSDK {
private $appId;
private $appSecret;
public function __construct($appId, $appSecret) {
$this->appId = $appId;
$this->appSecret = $appSecret;
}
public function getSignPackage($url) {
$jsapiTicket = $this->getJsApiTicket();
$timestamp = time();
$nonceStr = $this->createNonceStr();
$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
$signature = sha1($string);
$signPackage = array(
"appId" => $this->appId,
"nonceStr" => $nonceStr,
"timestamp" => $timestamp,
"url" => $url,
"signature" => $signature,
"rawString" => $string
);
return $signPackage;
}
private function createNonceStr($length = 16) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
private function getJsApiTicket() {
$file = 'jsapi_ticket.json';
if(!file_exists($file)){
file_put_contents($file, '');
}
$data = json_decode(file_get_contents($file));
if (empty($data) || $data->expire_time < time()) {
$accessToken = $this->getAccessToken();
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
$res = json_decode($this->httpGet($url));
$ticket = $res->ticket;
if ($ticket) {
$data = new stdClass();
$data->expire_time = time() + 4000;
$data->jsapi_ticket = $ticket;
file_put_contents($file, json_encode($data));
}
} else {
$ticket = $data->jsapi_ticket;
}
return $ticket;
}
private function getAccessToken() {
$file = 'access_token.json';
if(!file_exists($file)){
file_put_contents($file, '');
}
$data = json_decode(file_get_contents($file));
if (empty($data) || $data->expire_time < time()) {
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
$res = json_decode($this->httpGet($url));
$access_token = $res->access_token;
if ($access_token) {
$data = new stdClass();
$data->expire_time = time() + 4000;
$data->access_token = $access_token;
file_put_contents($file, json_encode($data));
}
} else {
$access_token = $data->access_token;
}
return $access_token;
}
private function httpGet($url) {
return file_get_contents($url);
}
}
客戶端調用示例
$.ajax({
type: "GET",
url: "/jssdk/?url=" + encodeURI(location.href),
dataType: "json",
data: {},
success: function (res) {
console.log(res);
wx.config({
debug: true, // 開啓調試模式,調用的所有api的返回值會在客戶端alert出來,若要查看傳入的參數,可以在pc端打開,參數信息會通過log打出,僅在pc端時纔會打印。
appId: res.data.appId, // 必填,公衆號的唯一標識
timestamp: res.data.timestamp, // 必填,生成簽名的時間戳
nonceStr: res.data.nonceStr, // 必填,生成簽名的隨機串
signature: res.data.signature,// 必填,簽名
jsApiList: res.data.jsApiList// 必填,需要使用的JS接口列表
});
},
})