thinkphp通过微信公众平台API自定义分享链接的标题、描述和缩略图(不会出现invalid signature签名无效的错误)

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互联网集市收集整理的这篇技术教程文章主要介绍了thinkphp通过微信公众平台API自定义分享链接的标题、描述和缩略图(不会出现invalid signature签名无效的错误)，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含4724字，纯文字阅读大概需要7分钟。

内容图文

调试时使用get获得access_token---------------------------------
https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=【appid】&secret=【secret】

调试时使用get获得ticket-------------------------------------------
https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=【access_token】&type=jsapi

微信JS接口签名校验工具------------------------------------
https://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=jsapisign

以下为代码：

Controller页------------------------------
require_once "./Extend/jssdk.php" ;我把jssdk.php放在了网站目录/Extend/里
$jssdk = new \JSSDK('【appid 】','【secret】');//这里填写自己的appid 和secret
$signPackage = $jssdk->GetSignPackage();
$this->assign("signPackage",$signPackage);

View页--------------------------------------
引入<script type="text/javascript" src="https://res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>

为了不和其它引用的JS文件起冲突，在其它引入JS文件之前引用

<script>
wx.config({
debug: false,
appId: '{$signPackage["appId"]}',
timestamp: '{$signPackage["timestamp"]}',
nonceStr: '{$signPackage["nonceStr"]}',
signature: '{$signPackage["signature"]}',
jsApiList: [
//两个分享接口,分别是朋友圈和个人
'onMenuShareTimeline',
'onMenuShareAppMessage'
]
});
wx.ready(function () {
var shareData = {
title: '', // 标题
desc: '', // 描述
link: '', // 分享的URL，必须和当前打开的网页的URL是一样的
imgUrl: '' // 缩略图地址
};
wx.onMenuShareAppMessage(shareData);
wx.onMenuShareTimeline(shareData);
});
wx.error(function (res) {
alert(res.errMsg);//错误提示
});
</script>

jssdk.php文件----------------没地方下，在网上复制的，里面的$string字符串有错误，所以坑了好长时间才找到问题所在
<?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();
// 这里参数的顺序要按照 key 值 ASCII 码升序排序
$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";     //就是这里坑了好久
$signature = sha1($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() {
// jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例
$data = json_decode(file_get_contents("jsapi_ticket.json"));
if ($data->expire_time < time()) {
$accessToken = $this->getAccessToken();
// 如果是企业号用以下 URL 获取 ticket
// $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
$res = json_decode($this->httpGet($url));
$ticket = $res->ticket;
if ($ticket) {
$data->expire_time = time() + 7000;
$data->jsapi_ticket = $ticket;
$fp = fopen("jsapi_ticket.json", "w");
fwrite($fp, json_encode($data));
fclose($fp);
}
} else {
$ticket = $data->jsapi_ticket;
}

return $ticket;
}

private function getAccessToken() {
// access_token 应该全局存储与更新，以下代码以写入到文件中做示例
$data = json_decode(file_get_contents("access_token.json"));
if ($data->expire_time < time()) {
// 如果是企业号用以下URL获取access_token
// $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$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;
$fp = fopen("access_token.json", "w");
fwrite($fp, json_encode($data));
fclose($fp);
}
} 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, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_URL, $url);

$res = curl_exec($curl);
curl_close($curl);

return $res;
}
}
?>

内容总结

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