1 <?php
  2 require_once "../lib/WxPay.Api.php";
  3 /**
  4  *
  5  * JSAPI支付实现类
  6  * 该类实现了从微信公众平台获取code、通过code获取openid和access_token、
  7  * 生成jsapi支付js接口所需的参数、生成获取共享收货地址所需的参数
  8  *
  9  * 该类是微信支付提供的样例程序，商户可根据自己的需求修改，或者使用lib中的api自行开发
 10  *
 11  * @author widy
 12  *
 13  */
 14 class JsApiPay
 15 {
 16     /**
 17      *
 18      * 网页授权接口微信服务器返回的数据，返回样例如下
 19      * {
 20      *  "access_token":"ACCESS_TOKEN",
 21      *  "expires_in":7200,
 22      *  "refresh_token":"REFRESH_TOKEN",
 23      *  "openid":"OPENID",
 24      *  "scope":"SCOPE",
 25      *  "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
 26      * }
 27      * 其中access_token可用于获取共享收货地址
 28      * openid是微信支付jsapi支付接口必须的参数
 29      * @var array
 30      */
 31     public $data = null;
 32
 33     /**
 34      *
 35      * 通过跳转获取用户的openid，跳转流程如下：
 36      * 1、设置自己需要调回的url及其其他参数，跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
 37      * 2、微信服务处理完成之后会跳转回用户redirect_uri地址，此时会带上一些参数，如：code
 38      *
 39      * @return 用户的openid
 40      */
 41     public function GetOpenid()
 42     {
 43         //通过code获得openid
 44         if (!isset($_GET['code'])){
 45             //触发微信返回code码
 46             $baseUrl = urlencode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].$_SERVER['QUERY_STRING']);
 47             $url = $this->__CreateOauthUrlForCode($baseUrl);
 48             Header("Location: $url");
 49             exit();
 50         } else {
 51             //获取code码，以获取openid
 52             $code = $_GET['code'];
 53             $openid = $this->getOpenidFromMp($code);
 54             return $openid;
 55         }
 56     }
 57
 58     /**
 59      *
 60      * 获取jsapi支付的参数
 61      * @param array $UnifiedOrderResult 统一支付接口返回的数据
 62      * @throws WxPayException
 63      *
 64      * @return json数据，可直接填入js函数作为参数
 65      */
 66     public function GetJsApiParameters($UnifiedOrderResult)
 67     {
 68         if(!array_key_exists("appid", $UnifiedOrderResult)
 69         || !array_key_exists("prepay_id", $UnifiedOrderResult)
 70         || $UnifiedOrderResult['prepay_id'] == "")
 71         {
 72             throw new WxPayException("参数错误");
 73         }
 74         $jsapi = new WxPayJsApiPay();
 75         $jsapi->SetAppid($UnifiedOrderResult["appid"]);
 76         $timeStamp = time();
 77         $jsapi->SetTimeStamp("$timeStamp");
 78         $jsapi->SetNonceStr(WxPayApi::getNonceStr());
 79         $jsapi->SetPackage("prepay_id=" . $UnifiedOrderResult['prepay_id']);
 80         $jsapi->SetSignType("MD5");
 81         $jsapi->SetPaySign($jsapi->MakeSign());
 82         $parameters = json_encode($jsapi->GetValues());
 83         return $parameters;
 84     }
 85
 86     /**
 87      *
 88      * 通过code从工作平台获取openid机器access_token
 89      * @param string $code 微信跳转回来带上的code
 90      *
 91      * @return openid
 92      */
 93     public function GetOpenidFromMp($code)
 94     {
 95         $url = $this->__CreateOauthUrlForOpenid($code);
 96         //初始化curl
 97         $ch = curl_init();
 98         //设置超时
 99         curl_setopt($ch, CURLOPT_TIMEOUT, $this->curl_timeout);
100         curl_setopt($ch, CURLOPT_URL, $url);
101         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,FALSE);
102         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,FALSE);
103         curl_setopt($ch, CURLOPT_HEADER, FALSE);
104         curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
105         if(WxPayConfig::CURL_PROXY_HOST != "0.0.0.0"
106             && WxPayConfig::CURL_PROXY_PORT != 0){
107             curl_setopt($ch,CURLOPT_PROXY, WxPayConfig::CURL_PROXY_HOST);
108             curl_setopt($ch,CURLOPT_PROXYPORT, WxPayConfig::CURL_PROXY_PORT);
109         }
110         //运行curl，结果以jason形式返回
111         $res = curl_exec($ch);
112         curl_close($ch);
113         //取出openid
114         $data = json_decode($res,true);
115         $this->data = $data;
116         $openid = $data['openid'];
117         return $openid;
118     }
119
120     /**
121      *
122      * 拼接签名字符串
123      * @param array $urlObj
124      *
125      * @return 返回已经拼接好的字符串
126      */
127     private function ToUrlParams($urlObj)
128     {
129         $buff = "";
130         foreach ($urlObj as $k => $v)
131         {
132             if($k != "sign"){
133                 $buff .= $k . "=" . $v . "&";
134             }
135         }
136
137         $buff = trim($buff, "&");
138         return $buff;
139     }
140
141     /**
142      *
143      * 获取地址js参数
144      *
145      * @return 获取共享收货地址js函数需要的参数，json格式可以直接做参数使用
146      */
147     public function GetEditAddressParameters()
148     {
149         $getData = $this->data;
150         $data = array();
151         $data["appid"] = WxPayConfig::APPID;
152         $data["url"] = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
153         $time = time();
154         $data["timestamp"] = "$time";
155         $data["noncestr"] = "1234568";
156         $data["accesstoken"] = $getData["access_token"];
157         ksort($data);
158         $params = $this->ToUrlParams($data);
159         $addrSign = sha1($params);
160
161         $afterData = array(
162             "addrSign" => $addrSign,
163             "signType" => "sha1",
164             "scope" => "jsapi_address",
165             "appId" => WxPayConfig::APPID,
166             "timeStamp" => $data["timestamp"],
167             "nonceStr" => $data["noncestr"]
168         );
169         $parameters = json_encode($afterData);
170         return $parameters;
171     }
172
173     /**
174      *
175      * 构造获取code的url连接
176      * @param string $redirectUrl 微信服务器回跳的url，需要url编码
177      *
178      * @return 返回构造好的url
179      */
180     private function __CreateOauthUrlForCode($redirectUrl)
181     {
182         $urlObj["appid"] = WxPayConfig::APPID;
183         $urlObj["redirect_uri"] = "$redirectUrl";
184         $urlObj["response_type"] = "code";
185         $urlObj["scope"] = "snsapi_base";
186         $urlObj["state"] = "STATE"."#wechat_redirect";
187         $bizString = $this->ToUrlParams($urlObj);
188         return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
189     }
190
191     /**
192      *
193      * 构造获取open和access_toke的url地址
194      * @param string $code，微信跳转带回的code
195      *
196      * @return 请求的url
197      */
198     private function __CreateOauthUrlForOpenid($code)
199     {
200         $urlObj["appid"] = WxPayConfig::APPID;
201         $urlObj["secret"] = WxPayConfig::APPSECRET;
202         $urlObj["code"] = $code;
203         $urlObj["grant_type"] = "authorization_code";
204         $bizString = $this->ToUrlParams($urlObj);
205         return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
206     }
207 }

{    "openid":" OPENID",  " nickname": NICKNAME,   "sex":"1",   "province":"PROVINCE"   "city":"CITY",   "country":"COUNTRY",    "headimgurl":    "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/46",  "privilege":[ "PRIVILEGE1" "PRIVILEGE2"     ],    "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL" }

{"errcode":40003,"errmsg":" invalid openid "}