1、准备工作：
1.1微信浏览器
1.2微信APPID,nonceStr
2、使用方式快速预览
调用扫一扫微信接口。
1需要获取access_token
2获取 $jsapi_ticket
3加密
4返回前端
5前端Js实现接口
3、错误，坑点提示
1、获取的access_token 一定要加缓存，原因是有次数限制，3000
2、组装的url 地址一定要全。 http,https一定 一定不能少
3、Js安全接口一定要配置到域名地址。
二、代码实现
JSSDK类，提供大家参考，建议大家写成一个完整的类包，方便管理，和运用
<?php
/**
* Created by PhpStorm.
* User: JOJO
* Date: 2019/8/4
* Time: 14:53
*/ class JSSDK
{
public $appId;
private $appSecret; /**
* @name 初始化参数
* @author JOJO
* @copyright
*/
public function __construct($appId, $appSecret)
{ $this->appId = $appId; $this->appSecret = $appSecret;
} /**
* @name 获取config接口注入权限验证配置
* @author JOJO
* @copyright
*/
public function getWxConfig()
{ $jsapiTicket = $this->getJsapiTicket();
# - 获取调用页面的url
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
# - 时间戳
$timestamp = time(); # - 获取随机字符串
$nonceStr = $this->createNonceStr(); # - 这里参数的顺序要按照 key 值 ASCII 码升序排序
# - 亦可把参数以数组存值，ksort() - 以升序对关联数组进行排序
$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url"; $signature = sha1($string); # - 页面所需注入参数
$WxConfig = array(
"appId" => $this->appId,
"nonceStr" => $nonceStr,
"timestamp" => $timestamp,
"url" => $url,
"signature" => $signature,
"rawString" => $string
); return $WxConfig;
} public function getJsapiTicket()
{
if (\Yii::$app->cache->exists('jsapi_ticket')) {
return \Yii::$app->cache->get('jsapi_ticket');
}
$access_token = $this->getAccessToken();
if ($access_token == false) {
return false;
}
$url = sprintf("https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=%s&type=jsapi", $access_token);
$res = wx_tools::getCurl($url);
$res = json_decode($res, true);
if (isset($res['errcode']) && $res['errcode'] != 0) {
return false;
}
//这里应该把access_token缓存起来，有效期是7200s
\Yii::$app->cache->set('jsapi_ticket', $res['ticket'], 7000);
return $res['ticket'];
} public function getAccessToken()
{
if (\Yii::$app->cache->exists('access_token')) {
return \Yii::$app->cache->get('access_token');
}
$AppID =$this->appId;//AppID(应用ID)
$AppSecret = this->appSecret;//AppSecret(应用密钥)
$url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=' . $AppID . '&secret=' . $AppSecret;
$res = $this->getCurl($url);
$res = json_decode($res, true);
if (isset($res['errcode']) && $res['errcode'] != 0) {
return false;
}
\Yii::$app->cache->set('access_token', $res['access_token'], 7000);
return $res['access_token'];
} /**
* CURL GET 请求
* @param $url
* @return bool|mixed
*/
public function getCurl($url)
{
$curl = curl_init();
if (stripos($url, "https://") !== FALSE) {
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($curl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1
}
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$content = curl_exec($curl);
$status = curl_getinfo($curl); if (intval($status["http_code"]) == 200) {
curl_close($curl);
return $content;
} else {
$error = curl_errno($curl);
curl_close($curl);
file_put_contents('../web/logs/notify/error' . date('YmdHi') . '.txt', $error); return false;
}
} /**
* @name 产生随机字符串
* @author JOJO
* @copyright
*/
private function createNonceStr($length = 16)
{ $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; $str = ""; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str;
}
}
1、controller
$app_id = 'wx4868b98f52c67445';
$app_secret = '016c26ce85e14d19dac305fa1ba05c91';
$obj = new JSSDK($app_id, $app_secret);
$signPackage = $obj->getWxConfig();
2.view
<?php
$web = \yii\helpers\Url::base();
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>ttt</title> <meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0"> <!--通用js-->
<script src="<?= $web ?>/js/jquery-2.1.4.js"></script>
<script src="http://res.wx.qq.com/open/js/jweixin-1.4.0.js" charset="utf-8"></script> </head>
<body>
<div style="display: block">
<a id="saoyisao">扫一扫</a> </div>
<script>
wx.config({
debug: false,
appId: '<?php echo $signPackage["appId"];?>',
timestamp: <?php echo $signPackage["timestamp"];?>,
nonceStr: '<?php echo $signPackage["nonceStr"];?>',
signature: '<?php echo $signPackage["signature"];?>',
jsApiList: [
// 所有要调用的 API 都要加到这个列表中
"scanQRCode"
]
}); wx.ready(function () {
// 在这里调用 API
$(document).on("click", "a", function () {
debugger;
wx.scanQRCode({
needResult: 1, // 默认为0，扫描结果由微信处理，1则直接返回扫描结果，
scanType: ["qrCode", "barCode"], // 可以指定扫二维码还是一维码，默认二者都有
success: function (res) {
}
}); })
});
</script>
</body>
</html>
