此次總結一下用戶在微信內打開網頁時,能夠調用微信支付完成下單功能的模塊開發,也就是在微信內的H5頁面經過jsApi接口實現支付功能。固然了,微信官網上的微信支付開發文檔也講解的很詳細,而且有實現代碼可供參考,有的朋友直接看文檔就能夠本身實現此支付接口的開發了。javascript
1、前言php
爲什麼我還寫一篇微信支付接口的博文呢?第一,咱們必須知道,所謂的工做經驗不少都是靠總結出來的,你只有總結了更多知識,積累了更多經驗,你才能在該行業中脫穎而出,我我的以爲現在的招聘,不少都須要工做經驗(1年、3年、5年....),其實,工做時間的長久不能衡量一我的技術水平的高低,有的人一年的工做經驗能拿3年工做經驗的程序猿的工資,有的3年工做經驗的卻有可能比別人只有一年工做經驗的還低,因此說,總結才能讓本身的知識體系,經驗深度更牛逼更穩固(雖然寫一篇博文挺花費時間的);第二,寫博文分享給你們仍是挺有成就感的,首先是能讓新手從我分享的博文中能學到東西,而且能快速將博文所講解的技術運用到實際中來,因此我寫的博文基本上能讓新人快速讀懂而且容易理解,另外,技術大神的話,看到博文有講解的不對之處,還能夠指出,而且能夠交流,何樂而不爲呢,咱們須要的就是分享和交流。html
扯遠了,直接進入該主題的詳解。java
如今的微信支付方式有N種,看下圖,有刷卡支付、公衆號支付、掃碼支付和APP支付,另外還有支付工具的開發,本博文選擇的是公衆號支付藉口而開發進行講解,其餘幾種支付接口開發基本上思路都是同樣的,只要你能看懂我這博文所講解的基本思路,你基本上也能獨自開發其餘幾個支付接口。redis
2、思路詳解數據庫
咱們能夠拿微信支付接口文檔裏的業務流程時序圖看看,以下圖,基本思路是這樣子:首先在後臺生成一個連接,展現給用戶讓用戶點擊(例如頁面上有微信支付的按鈕),用戶點擊按鈕後,網站後臺會根據訂單的相關信息生成一個支付訂單,此時會調用統一下單接口,對微信支付系統發起請求,而微信支付系統受到請求後,會根據請求過來的數據,生成一個 預支付交易會話標識(prepay_id,就是經過這個來識別該訂單的),咱們的網站收到微信支付系統的響應後,會獲得prepay_id,而後經過本身構造微信支付所須要的參數,接着將支付所需參數返回給客戶端,用戶此時可能會有一個訂單信息頁,會有一個按鈕,點擊支付,此時會調用JSAPI接口對微信支付系統發起 請求支付,微信支付系統檢查了請求的相關合法性以後,就會提示輸入密碼,用戶此時輸入密碼確認,微信支付系統會對其進行驗證,經過的話會返回支付結果,而後微信跳轉會H5頁面,這其中有一步是異步通知網站支付結果,咱們網站須要對此進行處理(好比說異步支付結果經過後,須要更新數據表或者訂單信息,例如標誌用戶已支付該訂單了,同時也須要更新訂單日誌,防止用戶重複提交訂單)。json
3、代碼講解api
本次開發環境用的是php5.6 + MySQL + Redis + Linux + Apache,所選用的框架的CI框架(這些環境不必定須要和個人一致,框架也能夠本身選擇,反正本身稍微修改下代碼就能移植過去了)。數組
微信支付接口的開發代碼我已經提早寫好了,在這裏我對其進行分析講解,方便你們能輕鬆理解,固然,假如你有必定的基礎,直接看代碼就能理清全部流程了,而且個人代碼基本上都寫上了註釋(對於新手來講,這一點比微信文檔所提供的代碼好一點)。緩存
一、構造一個連接展現給用戶
這裏咱們提早須要知道一個點,那就是請求統一下單接口須要微信用戶的openid(詳情可看這https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1),而獲取openid須要先獲取code(詳情可看這微信登陸接口),因此咱們須要構造一個獲取code的URL:
Wxpay.php文件:
<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Wxpay extends MY_Controller { public function __construct() { parent::__construct(); $this->load->model('wxpay_model'); //$this->load->model('wxpay'); } public function index() { //微信支付 $this->smarty['wxPayUrl'] = $this->wxpay_model->retWxPayUrl(); $this->displayView('wxpay/index.tpl'); } }
在這先看看model裏所寫的幾個類:model裏有幾個類:微信支付類、統一下單接口類、響應型接口基類、請求型接口基類、全部接口基類、配置類。爲什麼要分那麼多類而不在一個類裏實現全部的方法的,由於,這樣看起來代碼邏輯清晰,哪一個類該幹嗎就幹嗎。
這裏我直接附上model的代碼了,裏面基本上每個類每個方法甚至每一行代碼都會有解釋的了,這裏我就不對其展開一句句分析了:
1 <?php 2 defined('BASEPATH') OR exit('No direct script access allowed'); 3 4 class Wxpay_model extends CI_Model { 5 public function __construct() { 6 parent::__construct(); 7 } 8 9 /** 10 * 返回能夠得到微信code的URL (用以獲取openid) 11 * @return [type] [description] 12 */ 13 public function retWxPayUrl() { 14 $jsApi = new JsApi_handle(); 15 return $jsApi->createOauthUrlForCode(); 16 } 17 18 /** 19 * 微信jsapi點擊支付 20 * @param [type] $data [description] 21 * @return [type] [description] 22 */ 23 public function wxPayJsApi($data) { 24 $jsApi = new JsApi_handle(); 25 //統一下單接口所需數據 26 $payData = $this->returnData($data); 27 //獲取code碼,用以獲取openid 28 $code = $_GET['code']; 29 $jsApi->setCode($code); 30 //經過code獲取openid 31 $openid = $jsApi->getOpenId(); 32 33 $unifiedOrderResult = null; 34 if ($openid != null) { 35 //取得統一下單接口返回的數據 36 $unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid); 37 //獲取訂單接口狀態 38 $returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id'); 39 if ($returnMessage['resultCode']) { 40 $jsApi->setPrepayId($retuenMessage['resultField']); 41 //取得wxjsapi接口所須要的數據 42 $returnMessage['resultData'] = $jsApi->getParams(); 43 } 44 45 return $returnMessage; 46 } 47 } 48 49 /** 50 * 統一下單接口所須要的數據 51 * @param [type] $data [description] 52 * @return [type] [description] 53 */ 54 public function returnData($data) { 55 $payData['sn'] = $data['sn']; 56 $payData['body'] = $data['goods_name']; 57 $payData['out_trade_no'] = $data['order_no']; 58 $payData['total_fee'] = $data['fee']; 59 $payData['attach'] = $data['attach']; 60 61 return $payData; 62 } 63 64 /** 65 * 返回統一下單接口結果 (參考https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1) 66 * @param [type] $payData [description] 67 * @param [type] $trade_type [description] 68 * @param [type] $openid [description] 69 * @return [type] [description] 70 */ 71 public function getResult($payData, $trade_type, $openid = null) { 72 $unifiedOrder = new UnifiedOrder_handle(); 73 74 if ($opneid != null) { 75 $unifiedOrder->setParam('openid', $openid); 76 } 77 $unifiedOrder->setParam('body', $payData['body']); //商品描述 78 $unifiedOrder->setParam('out_trade_no', $payData['out_trade_no']); //商戶訂單號 79 $unifiedOrder->setParam('total_fee', $payData['total_fee']); //總金額 80 $unifiedOrder->setParam('attach', $payData['attach']); //附加數據 81 $unifiedOrder->setParam('notify_url', base_url('/Wxpay/pay_callback'));//通知地址 82 $unifiedOrder->setParam('trade_type', $trade_type); //交易類型 83 84 //非必填參數,商戶可根據實際狀況選填 85 //$unifiedOrder->setParam("sub_mch_id","XXXX");//子商戶號 86 //$unifiedOrder->setParam("device_info","XXXX");//設備號 87 //$unifiedOrder->setParam("time_start","XXXX");//交易起始時間 88 //$unifiedOrder->setParam("time_expire","XXXX");//交易結束時間 89 //$unifiedOrder->setParam("goods_tag","XXXX");//商品標記 90 //$unifiedOrder->setParam("product_id","XXXX");//商品ID 91 92 return $unifiedOrder->getResult(); 93 } 94 95 /** 96 * 返回微信訂單狀態 97 */ 98 public function returnMessage($unifiedOrderResult,$field){ 99 $arrMessage=array("resultCode"=>0,"resultType"=>"獲取錯誤","resultMsg"=>"該字段爲空"); 100 if($unifiedOrderResult==null){ 101 $arrMessage["resultType"]="未獲取權限"; 102 $arrMessage["resultMsg"]="請從新打開頁面"; 103 }elseif ($unifiedOrderResult["return_code"] == "FAIL") 104 { 105 $arrMessage["resultType"]="網絡錯誤"; 106 $arrMessage["resultMsg"]=$unifiedOrderResult['return_msg']; 107 } 108 elseif($unifiedOrderResult["result_code"] == "FAIL") 109 { 110 $arrMessage["resultType"]="訂單錯誤"; 111 $arrMessage["resultMsg"]=$unifiedOrderResult['err_code_des']; 112 } 113 elseif($unifiedOrderResult[$field] != NULL) 114 { 115 $arrMessage["resultCode"]=1; 116 $arrMessage["resultType"]="生成訂單"; 117 $arrMessage["resultMsg"]="OK"; 118 $arrMessage["resultField"] = $unifiedOrderResult[$field]; 119 } 120 return $arrMessage; 121 } 122 123 /** 124 * 微信回調接口返回 驗證簽名並回應微信 125 * @param [type] $xml [description] 126 * @return [type] [description] 127 */ 128 public function wxPayNotify($xml) { 129 $notify = new Wxpay_server(); 130 $notify->saveData($xml); 131 //驗證簽名,並回復微信 132 //對後臺通知交互時,若是微信收到商戶的應答不是成功或者超時,微信認爲通知失敗 133 //微信會經過必定的策略(如30分鐘共8次),按期從新發起通知 134 if ($notify->checkSign() == false) { 135 $notify->setReturnParameter("return_code","FAIL");//返回狀態碼 136 $notify->setReturnParameter("return_msg","簽名失敗");//返回信息 137 } else { 138 $notify->checkSign=TRUE; 139 $notify->setReturnParameter("return_code","SUCCESS");//設置返回碼 140 } 141 142 return $notify; 143 } 144 } 145 146 /** 147 * JSAPI支付——H5網頁端調起支付接口 148 */ 149 class JsApi_handle extends JsApi_common { 150 public $code;//code碼,用以獲取openid 151 public $openid;//用戶的openid 152 public $parameters;//jsapi參數,格式爲json 153 public $prepay_id;//使用統一支付接口獲得的預支付id 154 public $curl_timeout;//curl超時時間 155 156 function __construct() 157 { 158 //設置curl超時時間 159 $this->curl_timeout = WxPayConf::CURL_TIMEOUT; 160 } 161 162 /** 163 * 生成獲取code的URL 164 * @return [type] [description] 165 */ 166 public function createOauthUrlForCode() { 167 //重定向URL 168 $redirectUrl = "http://www.itcen.cn/wxpay/confirm/".$orderId."?showwxpaytitle=1"; 169 $urlParams['appid'] = WxPayConf::APPID; 170 $urlParams['redirect_uri'] = $redirectUrl; 171 $urlParams['response_type'] = 'code'; 172 $urlParams['scope'] = 'snsapi_base'; 173 $urlParams['state'] = "STATE"."#wechat_redirect"; 174 //拼接字符串 175 $queryString = $this->ToUrlParams($urlParams, false); 176 return "https://open.weixin.qq.com/connect/oauth2/authorize?".$queryString; 177 } 178 179 /** 180 * 設置code 181 * @param [type] $code [description] 182 */ 183 public function setCode($code) { 184 $this->code = $code; 185 } 186 187 /** 188 * 做用:設置prepay_id 189 */ 190 public function setPrepayId($prepayId) 191 { 192 $this->prepay_id = $prepayId; 193 } 194 195 /** 196 * 做用:獲取jsapi的參數 197 */ 198 public function getParams() 199 { 200 $jsApiObj["appId"] = WxPayConf::APPID; 201 $timeStamp = time(); 202 $jsApiObj["timeStamp"] = "$timeStamp"; 203 $jsApiObj["nonceStr"] = $this->createNoncestr(); 204 $jsApiObj["package"] = "prepay_id=$this->prepay_id"; 205 $jsApiObj["signType"] = "MD5"; 206 $jsApiObj["paySign"] = $this->getSign($jsApiObj); 207 $this->parameters = json_encode($jsApiObj); 208 209 return $this->parameters; 210 } 211 212 /** 213 * 經過curl 向微信提交code 用以獲取openid 214 * @return [type] [description] 215 */ 216 public function getOpenId() { 217 //建立openid 的連接 218 $url = $this->createOauthUrlForOpenid(); 219 //初始化 220 $ch = curl_init(); 221 curl_setopt($ch, CURL_TIMEOUT, $this->curl_timeout); 222 curl_setopt($ch, CURL_URL, $url); 223 curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); 224 curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); 225 curl_setopt($ch, CURL_HEADER, FALSE); 226 curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); 227 //執行curl 228 $res = curl_exec($ch); 229 curl_close($ch); 230 //取出openid 231 $data = json_decode($res); 232 if (isset($data['openid'])) { 233 $this->openid = $data['openid']; 234 } else { 235 return null; 236 } 237 238 return $this->openid; 239 240 } 241 242 /** 243 * 生成能夠獲取openid 的URL 244 * @return [type] [description] 245 */ 246 public function createOauthUrlForOpenid() { 247 $urlParams['appid'] = WxPayConf::APPID; 248 $urlParams['secret'] = WxPayConf::APPSECRET; 249 $urlParams['code'] = $this->code; 250 $urlParams['grant_type'] = "authorization_code"; 251 $queryString = $this->ToUrlParams($urlParams, false); 252 return "https://api.weixin.qq.com/sns/oauth2/access_token?".$queryString; 253 } 254 } 255 256 /** 257 * 統一下單接口類 258 */ 259 class UnifiedOrder_handle extends Wxpay_client_handle { 260 public function __construct() { 261 //設置接口連接 262 $this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; 263 //設置curl超時時間 264 $this->curl_timeout = WxPayConf::CURL_TIMEOUT; 265 } 266 267 } 268 269 /** 270 * 響應型接口基類 271 */ 272 class Wxpay_server_handle extends JsApi_common{ 273 public $data; //接收到的數據,類型爲關聯數組 274 public $returnParams; //返回參數,類型爲關聯數組 275 276 /** 277 * 將微信請求的xml轉換成關聯數組 278 * @param [type] $xml [description] 279 * @return [type] [description] 280 */ 281 public function saveData($xml) { 282 $this->data = $this->xmlToArray($xml); 283 } 284 285 286 /** 287 * 驗證簽名 288 * @return [type] [description] 289 */ 290 public function checkSign() { 291 $tmpData = $this->data; 292 unset($temData['sign']); 293 $sign = $this->getSign($tmpData); 294 if ($this->data['sign'] == $sign) { 295 return true; 296 } 297 return false; 298 } 299 300 301 /** 302 * 設置返回微信的xml數據 303 */ 304 function setReturnParameter($parameter, $parameterValue) 305 { 306 $this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue); 307 } 308 309 /** 310 * 將xml數據返回微信 311 */ 312 function returnXml() 313 { 314 $returnXml = $this->createXml(); 315 return $returnXml; 316 } 317 318 } 319 320 /** 321 * 請求型接口的基類 322 */ 323 class Wxpay_client_handle extends JsApi_common{ 324 public $params; //請求參數,類型爲關聯數組 325 public $response; //微信返回的響應 326 public $result; //返回參數,類型類關聯數組 327 public $url; //接口連接 328 public $curl_timeout; //curl超時時間 329 330 /** 331 * 設置請求參數 332 * @param [type] $param [description] 333 * @param [type] $paramValue [description] 334 */ 335 public function setParam($param, $paramValue) { 336 $this->params[$this->tirmString($param)] = $this->trimString($paramValue); 337 } 338 339 /** 340 * 獲取結果,默認不使用證書 341 * @return [type] [description] 342 */ 343 public function getResult() { 344 $this->postxml(); 345 $this->result = $this->xmlToArray($this->response); 346 347 return $this->result; 348 } 349 350 /** 351 * post請求xml 352 * @return [type] [description] 353 */ 354 public function postxml() { 355 $xml = $this->createXml(); 356 $this->response = $this->postXmlCurl($xml, $this->curl, $this->curl_timeout); 357 358 return $this->response; 359 } 360 361 public function createXml() { 362 $this->params['appid'] = WxPayConf::APPID; //公衆號ID 363 $this->params['mch_id'] = WxPayConf::MCHID; //商戶號 364 $this->params['nonce_str'] = $this->createNoncestr(); //隨機字符串 365 $this->params['sign'] = $this->getSign($this->params); //簽名 366 367 return $this->arrayToXml($this->params); 368 } 369 370 371 372 } 373 374 /** 375 * 全部接口的基類 376 */ 377 class JsApi_common { 378 function __construct() { 379 380 } 381 382 public function trimString($value) { 383 $ret = null; 384 if (null != $value) { 385 $ret = trim($value); 386 if (strlen($ret) == 0) { 387 $ret = null; 388 } 389 } 390 return $ret; 391 } 392 393 /** 394 * 產生隨機字符串,不長於32位 395 * @param integer $length [description] 396 * @return [type] [description] 397 */ 398 public function createNoncestr($length = 32) { 399 $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; 400 $str = ''; 401 for ($i = 0; $i < $length; $i++) { 402 $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); 403 } 404 405 return $str; 406 } 407 408 /** 409 * 格式化參數 拼接字符串,簽名過程須要使用 410 * @param [type] $urlParams [description] 411 * @param [type] $needUrlencode [description] 412 */ 413 public function ToUrlParams($urlParams, $needUrlencode) { 414 $buff = ""; 415 ksort($urlParams); 416 417 foreach ($urlParams as $k => $v) { 418 if($needUrlencode) $v = urlencode($v); 419 $buff .= $k .'='. $v .'&'; 420 } 421 422 $reqString = ''; 423 if (strlen($buff) > 0) { 424 $reqString = substr($buff, 0, strlen($buff) - 1); 425 } 426 427 return $reqString; 428 } 429 430 /** 431 * 生成簽名 432 * @param [type] $params [description] 433 * @return [type] [description] 434 */ 435 public function getSign($obj) { 436 foreach ($obj as $k => $v) { 437 $params[$k] = $v; 438 } 439 //簽名步驟一:按字典序排序參數 440 ksort($params); 441 $str = $this->ToUrlParams($params, false); 442 //簽名步驟二:在$str後加入key 443 $str = $str."$key=".WxPayConf::KEY; 444 //簽名步驟三:md5加密 445 $str = md5($str); 446 //簽名步驟四:全部字符轉爲大寫 447 $result = strtoupper($str); 448 449 return $result; 450 } 451 452 /** 453 * array轉xml 454 * @param [type] $arr [description] 455 * @return [type] [description] 456 */ 457 public function arrayToXml($arr) { 458 $xml = "<xml>"; 459 foreach ($arr as $k => $v) { 460 if (is_numeric($val)) { 461 $xml .= "<".$key.">".$key."</".$key.">"; 462 } else { 463 $xml .= "<".$key."><![CDATA[".$val."]]></".$key.">"; 464 } 465 } 466 $xml .= "</xml>"; 467 return $xml; 468 } 469 470 /** 471 * 將xml轉爲array 472 * @param [type] $xml [description] 473 * @return [type] [description] 474 */ 475 public function xmlToArray($xml) { 476 $arr = json_decode(json_encode(simplexml_load_string($xml, 'SinpleXMLElement', LIBXML_NOCDATA)), true); 477 478 return $arr; 479 } 480 481 /** 482 * 以post方式提交xml到對應的接口 483 * @param [type] $xml [description] 484 * @param [type] $url [description] 485 * @param integer $second [description] 486 * @return [type] [description] 487 */ 488 public function postXmlCurl($xml, $url, $second = 30) { 489 //初始化curl 490 $ch = curl_init(); 491 //設置超時 492 curl_setopt($ch, CURL_TIMEOUT, $second); 493 curl_setopt($ch, CURL_URL, $url); 494 //這裏設置代理,若是有的話 495 //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8'); 496 //curl_setopt($ch,CURLOPT_PROXYPORT, 8080); 497 curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); 498 curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); 499 //設置header 500 curl_setopt($ch, CURL_HEADER, FALSE); 501 //要求結果爲字符串且輸出到屏幕上 502 curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); 503 //以post方式提交 504 curl_setopt($ch, CURL_POST, TRUE); 505 curl_setopt($ch, CURL_POSTFIELDS, $xml); 506 //執行curl 507 $res = curl_exec($ch); 508 509 if ($res) { 510 curl_close($ch); 511 return $res; 512 } else { 513 $error = curl_errno($ch); 514 echo "curl出錯,錯誤碼:$error"."<br>"; 515 echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>錯誤緣由查詢</a></br>"; 516 curl_close($ch); 517 return false; 518 } 519 } 520 } 521 522 /** 523 * 配置類 524 */ 525 class WxPayConf { 526 //微信公衆號身份的惟一標識。 527 const APPID = 'wx654a22c6423213b7'; 528 //受理商ID,身份標識 529 const MCHID = '10043241'; 530 const MCHNAME = 'KellyCen的博客'; 531 532 //商戶支付密鑰Key。 533 const KEY = '0000000000000000000000000000000'; 534 //JSAPI接口中獲取openid 535 const APPSECRET = '000000000000000000000000000'; 536 537 //證書路徑,注意應該填寫絕對路徑 538 const SSLCERT_PATH = '/home/WxPayCacert/apiclient_cert.pem'; 539 const SSLKEY_PATH = '/home/WxPayCacert/apiclient_key.pem'; 540 const SSLCA_PATH = '/home/WxPayCacert/rootca.pem'; 541 542 //本例程經過curl使用HTTP POST方法,此處可修改其超時時間,默認爲30秒 543 const CURL_TIMEOUT = 30; 544 }
獲取到code的URL後,將其分配到頁面去,讓用戶去點擊,用戶進行點擊後,就會從微信服務器獲取到code,而後回調到redirect_uri所指的地址去。
二、獲取到code後,會回調到redirect_uri所指向的地址去,這裏是到了/Wxpay/confirm/,看看這個confirm方法是打算幹嗎的:
/** * 手機端微信支付,此處是受權獲取到code時的回調地址 * @param [type] $orderId 訂單編號id * @return [type] [description] */ public function confirm($orderId) { //先確認用戶是否登陸 $this->ensureLogin(); //經過訂單編號獲取訂單數據 $order = $this->wxpay_model->get($orderId); //驗證訂單是不是當前用戶 $this->_verifyUser($order); //取得支付所須要的訂單數據 $orderData = $this->returnOrderData[$orderId]; //取得jsApi所須要的數據 $wxJsApiData = $this->wxpay_model->wxPayJsApi($orderData); //將數據分配到模板去,在js裏使用 $this->smartyData['wxJsApiData'] = json_encode($wxJsApiData, JSON_UNESCAPED_UNICODE); $this->smartyData['order'] = $orderData; $this->displayView('wxpay/confirm.tpl'); }
這一步開始去取JSAPI支付接口所須要的數據了,這一步算是最主要的一步,這裏還會調用統一下單接口獲取到prepay_id,咱們跳到
$this->wxpay_model->wxPayJsApi($orderData) 看看:
/** * 微信jsapi點擊支付 * @param [type] $data [description] * @return [type] [description] */ public function wxPayJsApi($data) { $jsApi = new JsApi_handle(); //統一下單接口所需數據 $payData = $this->returnData($data); //獲取code碼,用以獲取openid $code = $_GET['code']; $jsApi->setCode($code); //經過code獲取openid $openid = $jsApi->getOpenId(); $unifiedOrderResult = null; if ($openid != null) { //取得統一下單接口返回的數據 $unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid); //獲取訂單接口狀態 $returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id'); if ($returnMessage['resultCode']) { $jsApi->setPrepayId($retuenMessage['resultField']); //取得wxjsapi接口所須要的數據 $returnMessage['resultData'] = $jsApi->getParams(); } return $returnMessage; } }
這裏首先是取得下單接口所須要的數據;
接着獲取到code碼,經過code碼獲取到openid;
而後調用統一下單接口,取得下單接口的響應數據,即prepay_id;
最後取得微信支付JSAPI所須要的數據。
這就是上面這個方法所要作的事情,取到數據後,會將數據分配到模板裏,而後根據官方文檔所給的參考格式將其放在js裏,以下面的代碼:
<!doctype html> <html> <head lang="zh-CN"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- Make sure that we can test against real IE8 --> <meta http-equiv="X-UA-Compatible" content="IE=8" /> <title></title> </head> <body> <a href="javascript:callpay();" id="btnOrder">點擊支付</a> </body> <script type="text/javascript"> //將數據付給js變量 var wxJsApiData = {$wxJsApiData}; function onBridgeReady() { //格式參考官方文檔 https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6 WeixinJSBridge.invoke( 'getBrandWCPayRequest', $.parseJSON(wxJsApiData.resultData), function(res){ if(res.err_msg == "get_brand_wcpay_request:ok" ){ window.location.href="/wxpay/paysuccess/"+{$order.sn}; } } ); } function callpay() { if(!wxJsApiData.resultCode){ alert(wxJsApiData.resultType+","+wxJsApiData.resultMsg+"!"); return false; } if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', onBridgeReady); document.attachEvent('onWeixinJSBridgeReady', onBridgeReady); } }else{ onBridgeReady(); } } </script> </html>
三、此時用戶只須要點擊支付,就能夠開始進入支付界面了,接着就是輸入密碼,確認,最後會提示支付成功,緊接着網站會提供一個支付成功跳轉頁面。相似微信文檔裏所提供的圖片這樣,這裏我就直接截取文檔裏的案例圖了:
四、這裏還有一步,就是微信支付系統會異步通知網站後臺用戶的支付結果。在獲取統一下單數據時,咱們指定了一個通知地址,在model裏能夠找到
支付成功後,微信支付系統會將支付結果異步發送到此地址上/Wxpay/pay_callback/ ,咱們來看一下這個方法
/** * 支付回調接口 * @return [type] [description] */ public function pay_callback() { $postData = ''; if (file_get_contents("php://input")) { $postData = file_get_contents("php://input"); } else { return; } $payInfo = array(); $notify = $this->wxpay_model->wxPayNotify($postData); if ($notify->checkSign == TRUE) { if ($notify->data['return_code'] == 'FAIL') { $payInfo['status'] = FALSE; $payInfo['msg'] = '通訊出錯'; } elseif ($notify->data['result_code'] == 'FAIL') { $payInfo['status'] = FALSE; $payInfo['msg'] = '業務出錯'; } else { $payInfo['status'] = TRUE; $payInfo['msg'] = '支付成功'; $payInfo['sn']=substr($notify->data['out_trade_no'],8); $payInfo['order_no'] = $notify->data['out_trade_no']; $payInfo['platform_no']=$notify->data['transaction_id']; $payInfo['attach']=$notify->data['attach']; $payInfo['fee']=$notify->data['cash_fee']; $payInfo['currency']=$notify->data['fee_type']; $payInfo['user_sign']=$notify->data['openid']; } } $returnXml = $notify->returnXml(); echo $returnXml; $this->load->library('RedisCache'); if($payInfo['status']){ //這裏要記錄到日誌處理(略) $this->model->order->onPaySuccess($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo); $this->redis->RedisCache->set('order:payNo:'.$payInfo['order_no'],'OK',5000); }else{ //這裏要記錄到日誌處理(略) $this->model->order->onPayFailure($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo, '訂單支付失敗 ['.$payInfo['msg'].']'); } }
這方法就是對支付是否成功,對網站的支付相關邏輯進行後續處理,例如假如支付失敗,就須要記錄日誌裏說明這次交易失敗,或者是作某一些邏輯處理,而支付成功又該如何作處理,等等。
這裏咱們就分析下這個方法 $this->wxpay_model->wxPayNotify($postData); 對異步返回的數據進行安全性校驗,例如驗證簽名,看看model裏的這個方法:
/** * 微信回調接口返回 驗證簽名並回應微信 * @param [type] $xml [description] * @return [type] [description] */ public function wxPayNotify($xml) { $notify = new Wxpay_server(); $notify->saveData($xml); //驗證簽名,並回復微信 //對後臺通知交互時,若是微信收到商戶的應答不是成功或者超時,微信認爲通知失敗 //微信會經過必定的策略(如30分鐘共8次),按期從新發起通知 if ($notify->checkSign() == false) { $notify->setReturnParameter("return_code","FAIL");//返回狀態碼 $notify->setReturnParameter("return_msg","簽名失敗");//返回信息 } else { $notify->checkSign=TRUE; $notify->setReturnParameter("return_code","SUCCESS");//設置返回碼 } return $notify; }
若是驗證經過,則就開始進行交易成功或者失敗時所要作的邏輯處理了,這邏輯處理的代碼我就不寫了,由於每個網站的處理方式都不同,我這裏是這樣處理的,我把思路寫下,方便不懂的朋友能夠按着個人思路去完善後續的處理:首先是查看數據庫裏的訂單日誌表,看這筆交易以前是否已經交易過了,交易過就不用再更新數據表了,若是沒交易過,就會將以前存在redis的訂單數據給取出來,再將這些數據插入到訂單日誌表裏,差很少就這樣處理。
好了,基於H5的微信支付接口開發詳解就講到這裏,若是你認真理清博文裏所講解的思路,本身基本上也能夠嘗試開發此接口了,同時只要會了這個,你也基本上能夠開發二維碼支付,刷卡支付等等的支付接口。
這裏我附上這次開發中的完整代碼供你們閱讀:
1 <?php 2 defined('BASEPATH') OR exit('No direct script access allowed'); 3 4 class Wxpay extends MY_Controller { 5 public function __construct() { 6 parent::__construct(); 7 $this->load->model('wxpay_model'); 8 //$this->load->model('wxpay'); 9 10 } 11 12 public function index() { 13 //微信支付 14 $this->smarty['wxPayUrl'] = $this->wxpay_model->retWxPayUrl(); 15 $this->displayView('wxpay/index.tpl'); 16 } 17 18 /** 19 * 手機端微信支付,此處是受權獲取到code時的回調地址 20 * @param [type] $orderId 訂單編號id 21 * @return [type] [description] 22 */ 23 public function confirm($orderId) { 24 //先確認用戶是否登陸 25 $this->ensureLogin(); 26 //經過訂單編號獲取訂單數據 27 $order = $this->wxpay_model->get($orderId); 28 //驗證訂單是不是當前用戶 29 $this->_verifyUser($order); 30 31 //取得支付所須要的訂單數據 32 $orderData = $this->returnOrderData[$orderId]; 33 //取得jsApi所須要的數據 34 $wxJsApiData = $this->wxpay_model->wxPayJsApi($orderData); 35 //將數據分配到模板去,在js裏使用 36 $this->smartyData['wxJsApiData'] = json_encode($wxJsApiData, JSON_UNESCAPED_UNICODE); 37 $this->smartyData['order'] = $orderData; 38 $this->displayView('wxpay/confirm.tpl'); 39 40 } 41 /** 42 * 支付回調接口 43 * @return [type] [description] 44 */ 45 public function pay_callback() { 46 $postData = ''; 47 if (file_get_contents("php://input")) { 48 $postData = file_get_contents("php://input"); 49 } else { 50 return; 51 } 52 $payInfo = array(); 53 $notify = $this->wxpay_model->wxPayNotify($postData); 54 55 if ($notify->checkSign == TRUE) { 56 if ($notify->data['return_code'] == 'FAIL') { 57 $payInfo['status'] = FALSE; 58 $payInfo['msg'] = '通訊出錯'; 59 } elseif ($notify->data['result_code'] == 'FAIL') { 60 $payInfo['status'] = FALSE; 61 $payInfo['msg'] = '業務出錯'; 62 } else { 63 $payInfo['status'] = TRUE; 64 $payInfo['msg'] = '支付成功'; 65 $payInfo['sn']=substr($notify->data['out_trade_no'],8); 66 $payInfo['order_no'] = $notify->data['out_trade_no']; 67 $payInfo['platform_no']=$notify->data['transaction_id']; 68 $payInfo['attach']=$notify->data['attach']; 69 $payInfo['fee']=$notify->data['cash_fee']; 70 $payInfo['currency']=$notify->data['fee_type']; 71 $payInfo['user_sign']=$notify->data['openid']; 72 } 73 } 74 $returnXml = $notify->returnXml(); 75 76 echo $returnXml; 77 78 $this->load->library('RedisCache'); 79 if($payInfo['status']){ 80 //這裏要記錄到日誌處理(略) 81 $this->model->order->onPaySuccess($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo); 82 $this->redis->RedisCache->set('order:payNo:'.$payInfo['order_no'],'OK',5000); 83 }else{ 84 //這裏要記錄到日誌處理(略) 85 $this->model->order->onPayFailure($payInfo['sn'], $payInfo['order_no'], $payInfo['platform_no'],'', $payInfo['user_sign'], $payInfo, '訂單支付失敗 ['.$payInfo['msg'].']'); 86 } 87 } 88 89 /** 90 * 返回支付所須要的數據 91 * @param [type] $orderId 訂單號 92 * @param string $data 訂單數據,當$data數據存在時刷新$orderData緩存,由於訂單號不惟一 93 * @return [type] [description] 94 */ 95 public function returnOrderData($orderId, $data = '') { 96 //獲取訂單數據 97 $order = $this->wxpay_model->get($orderId); 98 if (0 === count($order)) return false; 99 if (empty($data)) { 100 $this->load->library('RedisCache'); 101 //取得緩存在redis的訂單數據 102 $orderData = $this->rediscache->getJson("order:orderData:".$orderId); 103 if (empty($orderData)) { 104 //若是redis裏沒有,則直接讀數據庫取 105 $this->load->model('order_model'); 106 $order = $this->order_model->get($orderId); 107 if (0 === count($order)) { 108 return false; 109 } 110 $data = $order; 111 } else { 112 //若是redis裏面有的話,直接返回數據 113 return $orderData; 114 } 115 } 116 117 //支付前緩存所須要的數據 118 $orderData['id'] = $data['id']; 119 $orderData['fee'] = $data['fee']; 120 121 //支付平臺須要的數據 122 $orderData['user_id'] = $data['user_id']; 123 $orderData['sn'] = $data['cn']; 124 //這是惟一編號 125 $orderData['order_no'] = substr(md5($data['sn'].$data['fee']), 8, 8).$data['sn']; 126 $orderData['fee'] = $data['fee']; 127 $orderData['time'] = $data['time']; 128 $orderData['goods_name'] = $data['goods_name']; 129 $orderData['attach'] = $data['attach']; 130 131 //將數據緩存到redis裏面 132 $this->rediscache->set("order:orderData:".$orderId, $orderData, 3600*24); 133 //作個標識緩存到redis,用以判斷該訂單是否已經支付了 134 $this->rediscache->set("order:payNo:".$orderData['order_no'], "NO", 3600*24); 135 136 return $orderData; 137 } 138 139 private function _verifyUser($order) { 140 if (empty($order)) show_404(); 141 if (0 === count($order)) show_404(); 142 //判斷訂單表裏的用戶id是不是當前登陸者的id 143 if ($order['user_id'] == $this->uid) return; 144 show_error('只能查看本身的訂單'); 145 } 146 147 }
1 <?php 2 defined('BASEPATH') OR exit('No direct script access allowed'); 3 4 class Wxpay_model extends CI_Model { 5 public function __construct() { 6 parent::__construct(); 7 } 8 9 /** 10 * 返回能夠得到微信code的URL (用以獲取openid) 11 * @return [type] [description] 12 */ 13 public function retWxPayUrl() { 14 $jsApi = new JsApi_handle(); 15 return $jsApi->createOauthUrlForCode(); 16 } 17 18 /** 19 * 微信jsapi點擊支付 20 * @param [type] $data [description] 21 * @return [type] [description] 22 */ 23 public function wxPayJsApi($data) { 24 $jsApi = new JsApi_handle(); 25 //統一下單接口所需數據 26 $payData = $this->returnData($data); 27 //獲取code碼,用以獲取openid 28 $code = $_GET['code']; 29 $jsApi->setCode($code); 30 //經過code獲取openid 31 $openid = $jsApi->getOpenId(); 32 33 $unifiedOrderResult = null; 34 if ($openid != null) { 35 //取得統一下單接口返回的數據 36 $unifiedOrderResult = $this->getResult($payData, 'JSAPI', $openid); 37 //獲取訂單接口狀態 38 $returnMessage = $this->returnMessage($unifiedOrder, 'prepay_id'); 39 if ($returnMessage['resultCode']) { 40 $jsApi->setPrepayId($retuenMessage['resultField']); 41 //取得wxjsapi接口所須要的數據 42 $returnMessage['resultData'] = $jsApi->getParams(); 43 } 44 45 return $returnMessage; 46 } 47 } 48 49 /** 50 * 統一下單接口所須要的數據 51 * @param [type] $data [description] 52 * @return [type] [description] 53 */ 54 public function returnData($data) { 55 $payData['sn'] = $data['sn']; 56 $payData['body'] = $data['goods_name']; 57 $payData['out_trade_no'] = $data['order_no']; 58 $payData['total_fee'] = $data['fee']; 59 $payData['attach'] = $data['attach']; 60 61 return $payData; 62 } 63 64 /** 65 * 返回統一下單接口結果 (參考https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=9_1) 66 * @param [type] $payData [description] 67 * @param [type] $trade_type [description] 68 * @param [type] $openid [description] 69 * @return [type] [description] 70 */ 71 public function getResult($payData, $trade_type, $openid = null) { 72 $unifiedOrder = new UnifiedOrder_handle(); 73 74 if ($opneid != null) { 75 $unifiedOrder->setParam('openid', $openid); 76 } 77 $unifiedOrder->setParam('body', $payData['body']); //商品描述 78 $unifiedOrder->setParam('out_trade_no', $payData['out_trade_no']); //商戶訂單號 79 $unifiedOrder->setParam('total_fee', $payData['total_fee']); //總金額 80 $unifiedOrder->setParam('attach', $payData['attach']); //附加數據 81 $unifiedOrder->setParam('notify_url', base_url('/Wxpay/pay_callback'));//通知地址 82 $unifiedOrder->setParam('trade_type', $trade_type); //交易類型 83 84 //非必填參數,商戶可根據實際狀況選填 85 //$unifiedOrder->setParam("sub_mch_id","XXXX");//子商戶號 86 //$unifiedOrder->setParam("device_info","XXXX");//設備號 87 //$unifiedOrder->setParam("time_start","XXXX");//交易起始時間 88 //$unifiedOrder->setParam("time_expire","XXXX");//交易結束時間 89 //$unifiedOrder->setParam("goods_tag","XXXX");//商品標記 90 //$unifiedOrder->setParam("product_id","XXXX");//商品ID 91 92 return $unifiedOrder->getResult(); 93 } 94 95 /** 96 * 返回微信訂單狀態 97 */ 98 public function returnMessage($unifiedOrderResult,$field){ 99 $arrMessage=array("resultCode"=>0,"resultType"=>"獲取錯誤","resultMsg"=>"該字段爲空"); 100 if($unifiedOrderResult==null){ 101 $arrMessage["resultType"]="未獲取權限"; 102 $arrMessage["resultMsg"]="請從新打開頁面"; 103 }elseif ($unifiedOrderResult["return_code"] == "FAIL") 104 { 105 $arrMessage["resultType"]="網絡錯誤"; 106 $arrMessage["resultMsg"]=$unifiedOrderResult['return_msg']; 107 } 108 elseif($unifiedOrderResult["result_code"] == "FAIL") 109 { 110 $arrMessage["resultType"]="訂單錯誤"; 111 $arrMessage["resultMsg"]=$unifiedOrderResult['err_code_des']; 112 } 113 elseif($unifiedOrderResult[$field] != NULL) 114 { 115 $arrMessage["resultCode"]=1; 116 $arrMessage["resultType"]="生成訂單"; 117 $arrMessage["resultMsg"]="OK"; 118 $arrMessage["resultField"] = $unifiedOrderResult[$field]; 119 } 120 return $arrMessage; 121 } 122 123 /** 124 * 微信回調接口返回 驗證簽名並回應微信 125 * @param [type] $xml [description] 126 * @return [type] [description] 127 */ 128 public function wxPayNotify($xml) { 129 $notify = new Wxpay_server(); 130 $notify->saveData($xml); 131 //驗證簽名,並回復微信 132 //對後臺通知交互時,若是微信收到商戶的應答不是成功或者超時,微信認爲通知失敗 133 //微信會經過必定的策略(如30分鐘共8次),按期從新發起通知 134 if ($notify->checkSign() == false) { 135 $notify->setReturnParameter("return_code","FAIL");//返回狀態碼 136 $notify->setReturnParameter("return_msg","簽名失敗");//返回信息 137 } else { 138 $notify->checkSign=TRUE; 139 $notify->setReturnParameter("return_code","SUCCESS");//設置返回碼 140 } 141 142 return $notify; 143 } 144 } 145 146 /** 147 * JSAPI支付——H5網頁端調起支付接口 148 */ 149 class JsApi_handle extends JsApi_common { 150 public $code;//code碼,用以獲取openid 151 public $openid;//用戶的openid 152 public $parameters;//jsapi參數,格式爲json 153 public $prepay_id;//使用統一支付接口獲得的預支付id 154 public $curl_timeout;//curl超時時間 155 156 function __construct() 157 { 158 //設置curl超時時間 159 $this->curl_timeout = WxPayConf::CURL_TIMEOUT; 160 } 161 162 /** 163 * 生成獲取code的URL 164 * @return [type] [description] 165 */ 166 public function createOauthUrlForCode() { 167 //重定向URL 168 $redirectUrl = "http://www.itcen.cn/wxpay/confirm/".$orderId."?showwxpaytitle=1"; 169 $urlParams['appid'] = WxPayConf::APPID; 170 $urlParams['redirect_uri'] = $redirectUrl; 171 $urlParams['response_type'] = 'code'; 172 $urlParams['scope'] = 'snsapi_base'; 173 $urlParams['state'] = "STATE"."#wechat_redirect"; 174 //拼接字符串 175 $queryString = $this->ToUrlParams($urlParams, false); 176 return "https://open.weixin.qq.com/connect/oauth2/authorize?".$queryString; 177 } 178 179 /** 180 * 設置code 181 * @param [type] $code [description] 182 */ 183 public function setCode($code) { 184 $this->code = $code; 185 } 186 187 /** 188 * 做用:設置prepay_id 189 */ 190 public function setPrepayId($prepayId) 191 { 192 $this->prepay_id = $prepayId; 193 } 194 195 /** 196 * 做用:獲取jsapi的參數 197 */ 198 public function getParams() 199 { 200 $jsApiObj["appId"] = WxPayConf::APPID; 201 $timeStamp = time(); 202 $jsApiObj["timeStamp"] = "$timeStamp"; 203 $jsApiObj["nonceStr"] = $this->createNoncestr(); 204 $jsApiObj["package"] = "prepay_id=$this->prepay_id"; 205 $jsApiObj["signType"] = "MD5"; 206 $jsApiObj["paySign"] = $this->getSign($jsApiObj); 207 $this->parameters = json_encode($jsApiObj); 208 209 return $this->parameters; 210 } 211 212 /** 213 * 經過curl 向微信提交code 用以獲取openid 214 * @return [type] [description] 215 */ 216 public function getOpenId() { 217 //建立openid 的連接 218 $url = $this->createOauthUrlForOpenid(); 219 //初始化 220 $ch = curl_init(); 221 curl_setopt($ch, CURL_TIMEOUT, $this->curl_timeout); 222 curl_setopt($ch, CURL_URL, $url); 223 curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); 224 curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); 225 curl_setopt($ch, CURL_HEADER, FALSE); 226 curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); 227 //執行curl 228 $res = curl_exec($ch); 229 curl_close($ch); 230 //取出openid 231 $data = json_decode($res); 232 if (isset($data['openid'])) { 233 $this->openid = $data['openid']; 234 } else { 235 return null; 236 } 237 238 return $this->openid; 239 240 } 241 242 /** 243 * 生成能夠獲取openid 的URL 244 * @return [type] [description] 245 */ 246 public function createOauthUrlForOpenid() { 247 $urlParams['appid'] = WxPayConf::APPID; 248 $urlParams['secret'] = WxPayConf::APPSECRET; 249 $urlParams['code'] = $this->code; 250 $urlParams['grant_type'] = "authorization_code"; 251 $queryString = $this->ToUrlParams($urlParams, false); 252 return "https://api.weixin.qq.com/sns/oauth2/access_token?".$queryString; 253 } 254 } 255 256 /** 257 * 統一下單接口類 258 */ 259 class UnifiedOrder_handle extends Wxpay_client_handle { 260 public function __construct() { 261 //設置接口連接 262 $this->url = "https://api.mch.weixin.qq.com/pay/unifiedorder"; 263 //設置curl超時時間 264 $this->curl_timeout = WxPayConf::CURL_TIMEOUT; 265 } 266 267 } 268 269 /** 270 * 響應型接口基類 271 */ 272 class Wxpay_server_handle extends JsApi_common{ 273 public $data; //接收到的數據,類型爲關聯數組 274 public $returnParams; //返回參數,類型爲關聯數組 275 276 /** 277 * 將微信請求的xml轉換成關聯數組 278 * @param [type] $xml [description] 279 * @return [type] [description] 280 */ 281 public function saveData($xml) { 282 $this->data = $this->xmlToArray($xml); 283 } 284 285 286 /** 287 * 驗證簽名 288 * @return [type] [description] 289 */ 290 public function checkSign() { 291 $tmpData = $this->data; 292 unset($temData['sign']); 293 $sign = $this->getSign($tmpData); 294 if ($this->data['sign'] == $sign) { 295 return true; 296 } 297 return false; 298 } 299 300 301 /** 302 * 設置返回微信的xml數據 303 */ 304 function setReturnParameter($parameter, $parameterValue) 305 { 306 $this->returnParameters[$this->trimString($parameter)] = $this->trimString($parameterValue); 307 } 308 309 /** 310 * 將xml數據返回微信 311 */ 312 function returnXml() 313 { 314 $returnXml = $this->createXml(); 315 return $returnXml; 316 } 317 318 } 319 320 /** 321 * 請求型接口的基類 322 */ 323 class Wxpay_client_handle extends JsApi_common{ 324 public $params; //請求參數,類型爲關聯數組 325 public $response; //微信返回的響應 326 public $result; //返回參數,類型類關聯數組 327 public $url; //接口連接 328 public $curl_timeout; //curl超時時間 329 330 /** 331 * 設置請求參數 332 * @param [type] $param [description] 333 * @param [type] $paramValue [description] 334 */ 335 public function setParam($param, $paramValue) { 336 $this->params[$this->tirmString($param)] = $this->trimString($paramValue); 337 } 338 339 /** 340 * 獲取結果,默認不使用證書 341 * @return [type] [description] 342 */ 343 public function getResult() { 344 $this->postxml(); 345 $this->result = $this->xmlToArray($this->response); 346 347 return $this->result; 348 } 349 350 /** 351 * post請求xml 352 * @return [type] [description] 353 */ 354 public function postxml() { 355 $xml = $this->createXml(); 356 $this->response = $this->postXmlCurl($xml, $this->curl, $this->curl_timeout); 357 358 return $this->response; 359 } 360 361 public function createXml() { 362 $this->params['appid'] = WxPayConf::APPID; //公衆號ID 363 $this->params['mch_id'] = WxPayConf::MCHID; //商戶號 364 $this->params['nonce_str'] = $this->createNoncestr(); //隨機字符串 365 $this->params['sign'] = $this->getSign($this->params); //簽名 366 367 return $this->arrayToXml($this->params); 368 } 369 370 371 372 } 373 374 /** 375 * 全部接口的基類 376 */ 377 class JsApi_common { 378 function __construct() { 379 380 } 381 382 public function trimString($value) { 383 $ret = null; 384 if (null != $value) { 385 $ret = trim($value); 386 if (strlen($ret) == 0) { 387 $ret = null; 388 } 389 } 390 return $ret; 391 } 392 393 /** 394 * 產生隨機字符串,不長於32位 395 * @param integer $length [description] 396 * @return [type] [description] 397 */ 398 public function createNoncestr($length = 32) { 399 $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; 400 $str = ''; 401 for ($i = 0; $i < $length; $i++) { 402 $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); 403 } 404 405 return $str; 406 } 407 408 /** 409 * 格式化參數 拼接字符串,簽名過程須要使用 410 * @param [type] $urlParams [description] 411 * @param [type] $needUrlencode [description] 412 */ 413 public function ToUrlParams($urlParams, $needUrlencode) { 414 $buff = ""; 415 ksort($urlParams); 416 417 foreach ($urlParams as $k => $v) { 418 if($needUrlencode) $v = urlencode($v); 419 $buff .= $k .'='. $v .'&'; 420 } 421 422 $reqString = ''; 423 if (strlen($buff) > 0) { 424 $reqString = substr($buff, 0, strlen($buff) - 1); 425 } 426 427 return $reqString; 428 } 429 430 /** 431 * 生成簽名 432 * @param [type] $params [description] 433 * @return [type] [description] 434 */ 435 public function getSign($obj) { 436 foreach ($obj as $k => $v) { 437 $params[$k] = $v; 438 } 439 //簽名步驟一:按字典序排序參數 440 ksort($params); 441 $str = $this->ToUrlParams($params, false); 442 //簽名步驟二:在$str後加入key 443 $str = $str."$key=".WxPayConf::KEY; 444 //簽名步驟三:md5加密 445 $str = md5($str); 446 //簽名步驟四:全部字符轉爲大寫 447 $result = strtoupper($str); 448 449 return $result; 450 } 451 452 /** 453 * array轉xml 454 * @param [type] $arr [description] 455 * @return [type] [description] 456 */ 457 public function arrayToXml($arr) { 458 $xml = "<xml>"; 459 foreach ($arr as $k => $v) { 460 if (is_numeric($val)) { 461 $xml .= "<".$key.">".$key."</".$key.">"; 462 } else { 463 $xml .= "<".$key."><![CDATA[".$val."]]></".$key.">"; 464 } 465 } 466 $xml .= "</xml>"; 467 return $xml; 468 } 469 470 /** 471 * 將xml轉爲array 472 * @param [type] $xml [description] 473 * @return [type] [description] 474 */ 475 public function xmlToArray($xml) { 476 $arr = json_decode(json_encode(simplexml_load_string($xml, 'SinpleXMLElement', LIBXML_NOCDATA)), true); 477 478 return $arr; 479 } 480 481 /** 482 * 以post方式提交xml到對應的接口 483 * @param [type] $xml [description] 484 * @param [type] $url [description] 485 * @param integer $second [description] 486 * @return [type] [description] 487 */ 488 public function postXmlCurl($xml, $url, $second = 30) { 489 //初始化curl 490 $ch = curl_init(); 491 //設置超時 492 curl_setopt($ch, CURL_TIMEOUT, $second); 493 curl_setopt($ch, CURL_URL, $url); 494 //這裏設置代理,若是有的話 495 //curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8'); 496 //curl_setopt($ch,CURLOPT_PROXYPORT, 8080); 497 curl_setopt($ch, CURL_SSL_VERIFYHOST, FALSE); 498 curl_setopt($ch, CURL_SSL_VERIFYPEER, FALSE); 499 //設置header 500 curl_setopt($ch, CURL_HEADER, FALSE); 501 //要求結果爲字符串且輸出到屏幕上 502 curl_setopt($ch, CURL_RETURNTRANSFER, TRUE); 503 //以post方式提交 504 curl_setopt($ch, CURL_POST, TRUE); 505 curl_setopt($ch, CURL_POSTFIELDS, $xml); 506 //執行curl 507 $res = curl_exec($ch); 508 509 if ($res) { 510 curl_close($ch); 511 return $res; 512 } else { 513 $error = curl_errno($ch); 514 echo "curl出錯,錯誤碼:$error"."<br>"; 515 echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>錯誤緣由查詢</a></br>"; 516 curl_close($ch); 517 return false; 518 } 519 } 520 } 521 522 /** 523 * 配置類 524 */ 525 class WxPayConf { 526 //微信公衆號身份的惟一標識。 527 const APPID = 'wx654a22c6423213b7'; 528 //受理商ID,身份標識 529 const MCHID = '10043241'; 530 const MCHNAME = 'KellyCen的博客'; 531 532 //商戶支付密鑰Key。 533 const KEY = '0000000000000000000000000000000'; 534 //JSAPI接口中獲取openid 535 const APPSECRET = '000000000000000000000000000'; 536 537 //證書路徑,注意應該填寫絕對路徑 538 const SSLCERT_PATH = '/home/WxPayCacert/apiclient_cert.pem'; 539 const SSLKEY_PATH = '/home/WxPayCacert/apiclient_key.pem'; 540 const SSLCA_PATH = '/home/WxPayCacert/rootca.pem'; 541 542 //本例程經過curl使用HTTP POST方法,此處可修改其超時時間,默認爲30秒 543 const CURL_TIMEOUT = 30; 544 }
1 <!doctype html> 2 <html> 3 <head lang="zh-CN"> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <!-- Make sure that we can test against real IE8 --> 6 <meta http-equiv="X-UA-Compatible" content="IE=8" /> 7 <title></title> 8 </head> 9 <body> 10 11 <a href="{$wxPayUrl}">微信支付</a> 12 </body> 13 </html>
1 <!doctype html> 2 <html> 3 <head lang="zh-CN"> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <!-- Make sure that we can test against real IE8 --> 6 <meta http-equiv="X-UA-Compatible" content="IE=8" /> 7 <title></title> 8 </head> 9 <body> 10 11 <a href="javascript:callpay();" id="btnOrder">點擊支付</a> 12 </body> 13 <script type="text/javascript"> 14 //將數據付給js變量 15 var wxJsApiData = {$wxJsApiData}; 16 function onBridgeReady() 17 { 18 //格式參考官方文檔 https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=7_7&index=6 19 WeixinJSBridge.invoke( 20 'getBrandWCPayRequest', 21 $.parseJSON(wxJsApiData.resultData), 22 function(res){ 23 if(res.err_msg == "get_brand_wcpay_request:ok" ){ 24 window.location.href="/wxpay/paysuccess/"+{$order.sn}; 25 } 26 27 } 28 ); 29 } 30 function callpay() 31 { 32 if(!wxJsApiData.resultCode){ 33 alert(wxJsApiData.resultType+","+wxJsApiData.resultMsg+"!"); 34 return false; 35 } 36 if (typeof WeixinJSBridge == "undefined"){ 37 if( document.addEventListener ){ 38 document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false); 39 }else if (document.attachEvent){ 40 document.attachEvent('WeixinJSBridgeReady', onBridgeReady); 41 document.attachEvent('onWeixinJSBridgeReady', onBridgeReady); 42 } 43 }else{ 44 onBridgeReady(); 45 } 46 } 47 </script> 48 </html>
裏面所用到的一些自定義函數能夠在我上一篇博文裏找找,那裏已經提供了代碼參考了。
如今咱們的線上項目是微信支付,支付寶支付,網銀支付信用卡支付的功能都有,而且PC和WAP端都分別對應有。因此整一個支付系統模塊還算比較完整,後期有時間我會總結和分享下其餘的支付接口開發的博文,但願有興趣的博友能夠關注下哦!!
本次分享和總結就到此。
若是此博文中有哪裏講得讓人難以理解,歡迎留言交流,如有講解錯的地方歡迎指出。
若是您以爲您能在此博文學到了新知識,請爲我頂一個,如文章中有解釋錯的地方,歡迎指出。
互相學習,共同進步!