PHP 调用微信JS-SDK 开发详解 [网摘]

一：准备文件，并将文件置于网站根目录下

access_token.json 

{"access_token":"","expire_time":0}

jsapi_ticket.json

 

{"jsapi_ticket":"","expire_time":0}

 

下面是一个jssdk的类文件

  文件:jssdk.php

<?php
class JSSDK {
  private $appId;
  private $appSecret;
  public function __construct($appId, $appSecret) {
    $this->appId = $appId;
    $this->appSecret = $appSecret;
  }
  public function getSignPackage() {
    $jsapiTicket = $this->getJsApiTicket();
    $url = "http://$_SERVER[HTTP_HOST]$_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=$nonceStr&timestamp=$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();
      $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$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()) {
      $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$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;
  }
}

二：编辑显示页面对应的后台PHP文件，添加如下代码

      include('jssdk.php');
      $jssdk = new JSSDK("APPID", "APPSECRET");
      $signPackage = $jssdk->GetSignPackage(); 
       
      $this->signPackage = $signPackage;

请将APPID和APPSECRET换成您自己微信账号的信息

三：编辑显示页面模板html文件，添加如下代码

<script src="http://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>
<script>
wx.config({
    appId: '{suetech:$signPackage.appId}',
    timestamp: {suetech:$signPackage.timestamp},
    nonceStr: '{suetech:$signPackage.nonceStr}',
    signature: '{suetech:$signPackage.signature}',
   jsApiList: [
        'checkJsApi',
        'onMenuShareTimeline',
        'onMenuShareAppMessage',
        'onMenuShareQQ',
        'onMenuShareWeibo'
      ]
  });
  /*
 * 注意：
 * 1. 所有的JS接口只能在公众号绑定的域名下调用，公众号开发者需要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”。
 * 2. 如果发现在 Android 不能分享自定义内容，请到官网下载最新的包覆盖安装，Android 自定义分享接口需升级至 6.0.2.58 版本及以上。
 * 3. 完整 JS-SDK 文档地址：http://mp.weixin.qq.com/wiki/7/aaa137b55fb2e0456bf8dd9148dd613f.html
 *
 * 如有问题请通过以下渠道反馈：
 * 邮箱地址：weixin-open@qq.com
 * 邮件主题：【微信JS-SDK反馈】具体问题
 * 邮件内容说明：用简明的语言描述问题所在，并交代清楚遇到该问题的场景，可附上截屏图片，微信团队会尽快处理你的反馈。
 */
wx.ready(function () {
  // 1 判断当前版本是否支持指定 JS 接口，支持批量判断
    wx.checkJsApi({
      jsApiList: [
        'getNetworkType',
        'previewImage',
         'onMenuShareTimeline',
        'onMenuShareAppMessage',
        'onMenuShareQQ',
        'onMenuShareWeibo'
      ],
      success: function (res) {
        alert(JSON.stringify(res));
      }
    });
  var shareData = {
    title: '标题',
      desc: '描述',
      link: '链接',
      imgUrl: '图片',
      trigger: function (res) {
        alert('用户点击发送给朋友');
      },
      success: function (res) {
        alert('已分享');
      },
      cancel: function (res) {
        alert('已取消');
      },
      fail: function (res) {
        alert(JSON.stringify(res));
      }
  };
  wx.onMenuShareAppMessage(shareData);
  wx.onMenuShareTimeline(shareData);
  wx.onMenuShareQQ(shareData);
  wx.onMenuShareWeibo(shareData);
});
wx.error(function (res) {
  alert(res.errMsg);
}); 
</script>

到此已经能够正常进行微信自定义分享了

需要注意的地方是在微信公众账号中配置您的域名，设置方法：

登陆微信公众账号->公众号设置->功能设置->JS接口安全域名->设置

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　来源:开源中国

来源 access_token.json

?

1	{"access_token":"","expire_time":0}

    jsapi_ticket.json

?

1	{"jsapi_ticket":"","expire_time":0}