我不喜欢回形针。

以前我仅仅把网页开始的地方放一个不可见的图片，后来发现没有效果。

现在我们开始：

微信公众号：

步骤一：绑定域名

先登录微信公众平台进入“公众号设置”的“功能设置”里填写“JS接口安全域名”。

步骤二：引入JS文件

r url=location.href;

$.ajax({

type : "get",

url : "http://这里改为你自己的网址.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("连接失败！");

}

});

wx.ready(function () {

var shareData = {

title: '这是是分享标题',

desc: '这是是摘要',

link: url,

imgUrl: '这里改为你网站域名下的小图标文件的地址'

};

wx.onMenuShareAppMessage(shareData);//分享给好友

wx.onMenuShareTimeline(shareData);//分享到朋友圈

wx.onMenuShareQQ(shareData);//分享给手机QQ

wx.onMenuShareWeibo(shareData);//分享腾讯微博

wx.onMenuShareQZone(shareData);//分享到QQ空间

});

wx.error(function (res) {

//alert(res.errMsg);//错误提示

});

url : "http://这里改为你自己的网址.com/jssdk.php?url="+url,

这个网站不必须是目前的网址，如果你有多个网站，可以引用同一个jssdk.php文件。

PHP  jssdk.php

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;

}

}

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

?>

只要改一下这一行为你自己的：

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

只要改一下这一行为你自己的：

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

最后，别忘了存放这个PHP的文件夹权限为可写。