使用JSSDK+PHP实现网页微信自定义分享
步骤一：绑定域名、设置白名单
登录微信公众平台，进入“公众号设置”的“功能设置”里填写“JS接口安全域名”；
进入“安全中心”里设置“IP白名单”，一个IP放一行。
步骤二：实现微信自定义分享
sample.php 示例代码
<?php
require_once "jssdk.php";
$jssdk = new JSSDK("yourAppID", "yourAppSecret");
$signPackage = $jssdk->GetSignPackage();
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script src="//res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
<script>
var title='标题';
var description='描述';
var link='链接地址';
var imgUrl = '图标';
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: [
'onMenuShareAppMessage',
'onMenuShareTimeline'
]
});
wx.ready(function () {
wx.onMenuShareAppMessage({
title: title,
desc: description,
link: link,
imgUrl: imgUrl,
type: '',
dataUrl: '',
success: function () {
console.log('分享成功');
},
cancel: function () {
console.log('分享失败');
}
});
wx.onMenuShareTimeline({
title: title,
desc: description,
link: link,
imgUrl: imgUrl,
success: function () {
console.log('分享成功');
},
cancel: function () {
console.log('分享失败');
}
});
});
</script>
</body>
</html>
jssdk.php
<?php
class JSSDK {
private $appId;
private $appSecret;
public function __construct($appId, $appSecret) {
$this->appId = $appId;
$this->appSecret = $appSecret;
}
public function getSignPackage() {
$jsapiTicket = $this->getJsApiTicket();
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$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() {
$data = json_decode($this->get_php_file("jsapi_ticket.php"));
if ($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->expire_time = time() + 7000;
$data->jsapi_ticket = $ticket;
$this->set_php_file("jsapi_ticket.php", json_encode($data));
}
} else {
$ticket = $data->jsapi_ticket;
}
return $ticket;
}
private function getAccessToken() {
$data = json_decode($this->get_php_file("access_token.php"));
if ($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->expire_time = time() + 7000;
$data->access_token = $access_token;
$this->set_php_file("access_token.php", json_encode($data));
}
} else {
$access_token = $data->access_token;
}
return $access_token;
}
private function httpGet($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}
private function get_php_file($filename) {
return trim(substr(file_get_contents(dirname(__FILE__).'/'.$filename), 15));
}
private function set_php_file($filename, $content) {
$fp = fopen(dirname(__FILE__).'/'.$filename, "w");
fwrite($fp, "<?php exit();?>" . $content);
fclose($fp);
}
}
jsapi_ticket.php 用于存储jsapi_ticket
<?php exit();?>
{"jsapi_ticket":"","expire_time":0}
access_token.php 用于存储access_token
<?php exit();?>
{"access_token":"","expire_time":0}
JS-SDK说明文档：https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html
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