先看效果：

我不喜歡回形針。

以前我僅僅把網頁開始的地方放一個不可見的圖片，後來發現沒有效果。

現在我們開始：

原料:微信公眾號：

步驟一：繫結域名

先登入微信公眾平臺進入“公眾號設定”的“功能設定”裡填寫“JS介面安全域名”。

步驟二：引入JS檔案

<script src="http://res.wx.qq.com/open/js/jweixin-1.2.0.js"></script>

<script>
    var  url=location.href;
 
    $.ajax({
        type : "get",
        url : "http://這裡改為你自己的網址.com/jssdk.php?url="+url,
        dataType : "jsonp",
        jsonp: "callback",
        jsonpCallback:"success_jsonpCallback",
        success : function(data){

            wx.config({
                debug: false,
                appId: data.appId,
                timestamp: data.timestamp,
                nonceStr: data.nonceStr,
                signature: data.signature,
                jsApiList: [
                    'onMenuShareTimeline',//
                    'onMenuShareAppMessage',
                    'onMenuShareQQ',
                    'onMenuShareWeibo',
                    'onMenuShareQZone'

                ]
            });
        },
        error:function(data){
            alert("連線失敗！");
        }
    });

    wx.ready(function () {
        var shareData = {
            title: '這是是分享標題',
            desc: '這是是摘要',
            link: url,
            imgUrl: '這裡改為你網站域名下的小圖示檔案的地址'
        };

        wx.onMenuShareAppMessage(shareData);//分享給好友
        wx.onMenuShareTimeline(shareData);//分享到朋友圈
        wx.onMenuShareQQ(shareData);//分享給手機QQ
        wx.onMenuShareWeibo(shareData);//分享騰訊微博
        wx.onMenuShareQZone(shareData);//分享到QQ空間



    });
    wx.error(function (res) {
        //alert(res.errMsg);//錯誤提示

    });
</script>
 

url : "http://這裡改為你自己的網址.com/jssdk.php?url="+url,

這個網站不必須是目前的網址，如果你有多個網站，可以引用同一個jssdk.php檔案。

PHP   jssdk.php

<?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();


        // 這裡引數的順序要按照 key 值 ASCII 碼升序排序
        $string = "jsapi_ticket=$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 應該全域性儲存與更新，以下程式碼以寫入到檔案中做示例
        $data = json_decode(file_get_contents("jsapi_ticket.json"));
        if ($data->expire_time < time()) {
            $accessToken = $this->getAccessToken();
            // 如果是企業號用以下 URL 獲取 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 應該全域性儲存與更新，以下程式碼以寫入到檔案中做示例
        $data = json_decode(file_get_contents("access_token.json"));
        if ($data->expire_time < time()) {
            // 如果是企業號用以下URL獲取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;
    }
}

$jssdk = new JSSDK("wx********************a", "*************************",$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;
?>
 

只要改一下這一行為你自己的：

$jssdk = new JSSDK("wx********************", "*************************",$url);

最後，別忘了存放這個PHP的資料夾許可權為可寫。

測試效果：

掃一掃，輸入”馬亮武“，查詢並分享