微信分享链接朋友圈带图标、说明解决方案

前提：需要一个微信公众号

第一步，进入公众号设置，配置js接口安全域名

 

第二步，配置IP白名单（填写站点服务器IP），获取AppID和AppSecret。

 

 

 第三步，引入JS

<script src="https://res.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
<script>
    var  url=location.href;
  
    $.ajax({
        type : "get",
        url : "https://填写你的网址/js/jssdk.php?url="+url,
        dataType : "jsonp",
        jsonp: "callback",
        jsonpCallback:"success_jsonpCallback",
        success : function(data){
            console.log(data)
            wx.config({
                debug: false,
                appId: data.appId,
                timestamp: data.timestamp,
                nonceStr: data.nonceStr,
                signature: data.signature,
                jsApiList: [
                    'updateAppMessageShareData', //分享到朋友圈
                    'updateTimelineShareData',//分享给朋友
                    'onMenuShareAppMessage',  //旧的接口，即将废弃
                    'onMenuShareTimeline' //旧的接口，即将废弃
  
                ]
            });
        },
        error:function(data){
            alert("连接失败！");
        }
    });
  
    wx.ready(function () {
         
         //分享到朋友圈
     wx.updateTimelineShareData({
       title: '这里填写标题',
       link: url,
       imgUrl: '这里填写图片路径',
       success: function (res) {
          
       }
     })
 
     wx.updateAppMessageShareData({
       title: '这里填写标题',
       desc: '这里填写描述',
       link: url,
       imgUrl:  '这里填写图片路径',
       success: function (res) {
         
       }
     })
  
  
    });
    wx.error(function (res) {
        alert(res);
  
    });
</script>

第四步，创建后端php文件，路径和上面引入地址一致即可，然后在当前目录下创建2个json文件 access_token.json ，jsapi_ticket.json，保证当前目录文件可写

<?php
 $url = $_GET['url'];
class JSSDK {
    private $appId;
    private $appSecret;
    private $url;
    public function __construct($appId, $appSecret,$url) {
        $this->appId = $appId;
        $this->appSecret = $appSecret;
        $this->url = $url;
    }
  
  
    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]";
        $url =$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(
            "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;
    }
}
  
$jssdk = new JSSDK("填写你的AppID", "填写你的AppSecret",$url);
$signPackage = $jssdk->GetSignPackage();
$tmp=json_encode(array ('appId'=>$signPackage["appId"],'timestamp'=>$signPackage["timestamp"],'nonceStr'=>$signPackage["nonceStr"],'signature'=>$signPackage["signature"],'url'=>$signPackage["url"]));
$callback = $_GET['callback'];
echo $callback.'('.$tmp.')';
exit;
?>