JS中静态页面实现微信分享功能

微信分享网页的时候，希望分享出来的链接是标题+描述+缩略图，微信开发代码示例里已提供了方法，但只适用于动态页面。我使用phpcms把页面生成了静态文件，示例代码就起不到作用了。在网上找了下，有大神使用ajax实现静态页面也能实现微信分享功能，在这里分享给大家。

前台代码：

<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="+url,//替换网址，xxx根据自己jssdk文件位置修改
 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> 

记得把jquery的库也加上去，否则ajax不会运行

修改服务端文件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=$nonceStr×tamp=$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;
?> 

其它的按照动态页面设置即可。

以上所述是小编给大家介绍的JS中静态页面实现微信分享功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！