php 微信分享

后端

<?php


namespace app\wap\controller;

use think\Controller;

/***
 *
 * 测试
 *
 */
class Test extends Controller
{

    private $appId;
    private $appSecret;
    private $url;


    public function __construct()
    {
        $this->appId = "wx7a3f3ac7ce4aea60";
        $this->appSecret = "3388ebcfb56d414df20a2cd21bd65696";
        $this->url = $_GET['url'];
    }

    public function index()
    {
        return view($this->style . '/wap/default_new/Test/index');
    }

    public function config()
    {

        $jsapiTicket = $this->getJsApiTicket();

        // 注意 URL 一定要动态获取，不能 hardcode.
        // $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
        // $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
        $url = $this->url;

        $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";

        $signature = sha1($string);

        $signPackage = array(
            "debug" => true,// 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
            "appId" => $this->appId,// 必填，公众号的唯一标识
            "timestamp" => $timestamp,// 必填，生成签名的时间戳
            "nonceStr" => $nonceStr,// 必填，生成签名的随机串
            "signature" => $signature,// 必填，签名
            "jsApiList" => [
                "updateAppMessageShareData",
                "updateTimelineShareData"
            ]// 必填，需要使用的JS接口列表
        );
        return $signPackage;
    }


    public 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();
            $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$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;
    }

    public 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;
    }

//获取access_token
    public 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()) {
            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$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 = $access_token;
                file_put_contents('access_token.json', json_encode($data));
//                $fp = fopen("access_token.json", "w");
//                fwrite($fp, json_encode($data));
//                fclose($fp);
            }
        } else {
            $access_token = $data->access_token;
        }
        return $access_token;
    }

//curl方法

    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;
    }
}

前端

<html>
<head>
    <meta charset='utf-8'>
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.js"></script>
    <script src="http://res.wx.qq.com/open/js/jweixin-1.4.0.js"></script>
    <title>
        微信分享测试
    </title>
</head>
<body>
微信自定义，动态修改分享内容;
</body>


<script>

    function WeChat(url,title,img,desc){

        $.get("{:__URL('APP_MAIN/test/config')}",{"url":window.location.href},function(data) {
            //config接口注入权限验证配置
                wx.config(data);
            //通过ready接口处理成功验证
                wx.ready(function () {
                    //自定义“分享给朋友”及“分享到QQ”按钮的分享内容
                    wx.updateAppMessageShareData({
                        title:title, // 分享标题
                        desc: desc, // 分享描述
                        link: url, // 分享链接，该链接域名或路径必须与当前页面对应的公众号JS安全域名一致
                        imgUrl: img, // 分享图标
                        success: function () {
                            // 设置成功
                        }
                    });
                    //自定义“分享到朋友圈”及“分享到QQ空间”按钮的分享内容
                    wx.ready(function () {      //需在用户可能点击分享按钮前就先调用
                        wx.updateTimelineShareData({
                            title: title, // 分享标题
                            link: url, // 分享链接，该链接域名或路径必须与当前页面对应的公众号JS安全域名一致
                            imgUrl:img, // 分享图标
                            desc:desc, // 分享描述
                            success: function () {
                                // 设置成功
                            }
                        })
                    });
                    wx.error(function (res) {
                        alert(res.errMsg);  //打印错误消息。及把 debug:false,设置为debug:ture就可以直接在网页上看到弹出的错误提示

                    });
                });
            },
            "json"
        );
    }

    //需要调用时执行这个方法。
    var url = window.location.href;//用户要分享的网址
    var title  = '测试标题';//分享的标题
    var shareimg = 'http://mmbiz.qpic.cn/mmbiz_jpg/ApfHKNJHibWqbudZaNbskpyKiatSjXYodz8DMNTY9JqsuLt7hNfiborrvWqV6U0Fb1GhbDc3BncWS50cVQGlVzicgA/0';//分享的图片
    var desc = '测试描述';//分享的描述信息
    WeChat(url,title,shareimg,desc);//当需要动态加载的时候，就调用一下。

</script>
</html>