可用代码
html页面
```
<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
<script>
window.οnlοad=function(){//进入页面就执行ajax，目的为了传送当前页面url#前的完整url
var ajaxurl = 'Wechat.php';//注意路径
var urll = location.href.split('#')[0]; //页面url#前的完整url,可alert弹出查看
var data = {
"urll":urll,
random:Math.random()
};
$.ajax({
url:ajaxurl,
data:data,
type:"POST",
dataType:"JSON",
success:function (ress){
//成功则执行JS-SDK
//console.log(ress);//查看返回结果
//执行JS_SDK
wx.config({
debug: false,
appId: ress.appId,
timestamp: ress.timestamp,
nonceStr: ress.nonceStr,
signature: ress.signature,
jsApiList: ['onMenuShareTimeline','onMenuShareAppMessage']
});
},
});
}
//alert(location.href.split('#')[0]); //弹出的url必须与访问地址一致
</script>
```
Wechat.php
```
<?php
$url = $_POST['urll'];
include('jssdk.php');
$jssdk = new JSSDK("你的appid", "你的appserectid");
$signPackage = $jssdk->GetSignPackage($url);
echo json_encode($signPackage);
```
jssdk.php
```
<?php
//error_reporting(0);
class JSSDK {
private $appId;
private $appSecret;
public function __construct($appId, $appSecret) {
$this->appId = $appId;
$this->appSecret = $appSecret;
}
public function getSignPackage($theurl) {
$jsapiTicket = $this->getJsApiTicket();
$url = $theurl;
//$url = "http://$_SERVER[HTTP_NAME]$_SERVER[REQUEST_URI]";
$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();
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
$res = json_decode($this->httpGet($url));
var_dump($res);
$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()) {
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
//$res = file_get_contents($url);
$res = json_decode($this->httpGet($url));
var_dump($res);
$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, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_HEADER, 0);
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;
}
}
```
基本思路
1、公众号。 2、微信认证。 3、域名备案。 4、JS接口安全域名设置。 5、开启开发者模式，获取appid、AppSecret。 6、ip白名单（服务器的ip）。 7、服务器配置开启，填写服务器地址、 8.冷静分析 错误原因 一味百度就去写不思考误终身
9.多谢我的组长！
参考链接
参考一问题就是ajax的data根本就没有在php文件里使用 也就是么有对当前url进行签名 导致一直签名错误 ajax是post 所以在wechat.php里使用Post获取到了签名
已解决问题“
1.微信分享 "Reference error wx is not defined"错误
”
解决办法：<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
2.“服务器不发送请求”
解决办法：一直报错 后来在服务器ping dns解析的一个Ip 根本就ping 不通 就改为可以ping通的一个地址
待解决问题“Access-Control-Allow-Origin”ajax跨域问题,加入<meta http-equiv="Access-Control-Allow-Origin" content="*"> 这个也是不可以得，就在需要本接口的模板当前路径都复制粘贴了wechat.php和jsdk.php
![检测手机号是否开通微信[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)