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静态页面 使用jssdk微信分享的方法

发布时间:2017年06月21日 评论数：抢沙发 阅读数：4500

不多说直接上代码

PS：微信需要认证，添加JS安全域名，域名得备案

前台代：




<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script> 
<script>
	url=location.href;
	$.ajax({
		type : "get",
		url : "http://xxxxxxxxx/jssdk.php?url="+encodeURIComponent(url),//替换网址 编码为了带参
		dataType : "jsonp",
		jsonp: "callback",
		jsonpCallback:"success_jsonpCallback",
		success : function(data){
			wx.config({
			appId: data.appId,
			timestamp: data.timestamp,
			nonceStr: data.nonceStr,
			signature: data.signature,
			jsApiList: [
				   "onMenuShareTimeline", //分享给好友
				   "onMenuShareAppMessage", //分享到朋友圈
				   "onMenuShareQQ",  //分享到QQ
				   "onMenuShareWeibo" //分享到微博
			]
			});
		},error:function(data){
			alert("连接失败！");
		}
	});
	wx.ready(function (){
	  var shareData = {
		  title: '标题',
		  desc: '简介',//这里请特别注意是要去除html
		  link: '链接',
		  imgUrl: '题图'
	  };
	  wx.onMenuShareAppMessage(shareData);
	  wx.onMenuShareTimeline(shareData);
	  wx.onMenuShareQQ(shareData);
	  wx.onMenuShareWeibo(shareData);
	});
</script>




服务端文件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();


        // 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("公众号ID", "公众号密钥", $url);//按照自己的公众号填写
$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;
?>