版本:CI3.0
微信扫码支付:模式二
下载官方demo:https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=11_1
我是个小菜鸟,第一次研究这个,感觉无从下手,走了很多弯路后,也算是完成了。现分享下希望对大家有帮助。
首先下载官方demo,将文件当在libraries/ 并命名为 Wxpay。在ci配置文件config/ 下新建 wxpay_config.php 并完成配置。
wxpay_config.php
在libraries/ 下新建 CI_Wechatpay.php 。
CI_Wechatpay.php
在libraries/ 下新建Wechatpay.php 这是前辈封装好的。尽情的享用吧,其实这里已经把所以核心都封装起来了,所以demo中的文件只需要保留cert/ logs/ 、但libraries/Wxpay/example/log.php 这个很有用,所以要把它放在Wxpay/下。
Wechatpay.php
_config = $config;
}
/**
* JSAPI获取prepay_id
* @param $body
* @param $out_trade_no
* @param $total_fee
* @param $notify_url
* @param $openid
* @return null
*/
public function getPrepayId($body,$out_trade_no,$total_fee,$notify_url,$openid) {
$data = array();
$data["nonce_str"] = $this->get_nonce_string();
$data["body"] = $body;
$data["out_trade_no"] = $out_trade_no;
$data["total_fee"] = $total_fee;
$data["spbill_create_ip"] = $_SERVER["REMOTE_ADDR"];
$data["notify_url"] = $notify_url;
$data["trade_type"] = self::TRADETYPE_JSAPI;
$data["openid"] = $openid;
$result = $this->unifiedOrder($data);
if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
return $result["prepay_id"];
} else {
$this->error = $result["return_code"] == "SUCCESS" ? $result["err_code_des"] : $result["return_msg"];
$this->errorXML = $this->array2xml($result);
return null;
}
}
private function get_nonce_string() {
return substr(str_shuffle("abcdefghijklmnopqrstuvwxyz0123456789"),0,32);
}
/**
* 统一下单接口
*/
public function unifiedOrder($params) {
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["device_info"] = (isset($params['device_info'])&&trim($params['device_info'])!='')?$params['device_info']:null;
$data["nonce_str"] = $this->get_nonce_string();
$data["body"] = $params['body'];
$data["detail"] = isset($params['detail'])?$params['detail']:null;//optional
$data["attach"] = isset($params['attach'])?$params['attach']:null;//optional
$data["out_trade_no"] = isset($params['out_trade_no'])?$params['out_trade_no']:null;
$data["fee_type"] = isset($params['fee_type'])?$params['fee_type']:'CNY';
$data["total_fee"] = $params['total_fee'];
$data["spbill_create_ip"] = $params['spbill_create_ip'];
$data["time_start"] = isset($params['time_start'])?$params['time_start']:null;//optional
$data["time_expire"] = isset($params['time_expire'])?$params['time_expire']:null;//optional
$data["goods_tag"] = isset($params['goods_tag'])?$params['goods_tag']:null;
$data["notify_url"] = $params['notify_url'];
$data["trade_type"] = $params['trade_type'];
$data["product_id"] = isset($params['product_id'])?$params['product_id']:null;//required when trade_type = NATIVE
$data["openid"] = isset($params['openid'])?$params['openid']:null;//required when trade_type = JSAPI
$result = $this->post(self::URL_UNIFIEDORDER, $data);
return $result;
}
private function post($url, $data,$cert = false) {
$data["sign"] = $this->sign($data);
$xml = $this->array2xml($data);
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_URL, $url);
if($cert == true){
//使用证书:cert 与 key 分别属于两个.pem文件
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT, $this->_config['sslcertPath']);
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY, $this->_config['sslkeyPath']);
}
$content = curl_exec($ch);
$array = $this->xml2array($content);
return $array;
}
/**
* 数据签名
* @param $data
* @return string
*/
private function sign($data) {
ksort($data);
$string1 = "";
foreach ($data as $k => $v) {
if ($v && trim($v)!='') {
$string1 .= "$k=$v&";
}
}
$stringSignTemp = $string1 . "key=" . $this->_config["apikey"];
$sign = strtoupper(md5($stringSignTemp));
return $sign;
}
private function array2xml($array) {
$xml = "" . PHP_EOL;
foreach ($array as $k => $v) {
if($v && trim($v)!='')
$xml .= "<$k>$k>" . PHP_EOL;
}
$xml .= " ";
return $xml;
}
private function xml2array($xml) {
$array = array();
$tmp = null;
try{
$tmp = (array) simplexml_load_string($xml);
}catch(Exception $e){}
if($tmp && is_array($tmp)){
foreach ( $tmp as $k => $v) {
$array[$k] = (string) $v;
}
}
return $array;
}
/**
* 扫码支付(模式二)获取支付二维码
* @param $body
* @param $out_trade_no
* @param $total_fee
* @param $notify_url
* @param $product_id
* @return null
*/
public function getCodeUrl($body,$out_trade_no,$total_fee,$notify_url,$product_id){
$data = array();
$data["nonce_str"] = $this->get_nonce_string();
$data["body"] = $body;
$data["out_trade_no"] = $out_trade_no;
$data["total_fee"] = $total_fee;
$data["spbill_create_ip"] = $_SERVER["SERVER_ADDR"];
$data["notify_url"] = $notify_url;
$data["trade_type"] = self::TRADETYPE_NATIVE;
$data["product_id"] = $product_id;
$result = $this->unifiedOrder($data);
if ($result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
return $result["code_url"];
} else {
$this->error = $result["return_code"] == "SUCCESS" ? $result["err_code_des"] : $result["return_msg"];
return null;
}
}
/**
* 查询订单
* @param $transaction_id
* @param $out_trade_no
* @return array
*/
public function orderQuery($transaction_id,$out_trade_no){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["transaction_id"] = $transaction_id;
$data["out_trade_no"] = $out_trade_no;
$data["nonce_str"] = $this->get_nonce_string();
$result = $this->post(self::URL_ORDERQUERY, $data);
return $result;
}
/**
* 关闭订单
* @param $out_trade_no
* @return array
*/
public function closeOrder($out_trade_no){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["out_trade_no"] = $out_trade_no;
$data["nonce_str"] = $this->get_nonce_string();
$result = $this->post(self::URL_CLOSEORDER, $data);
return $result;
}
/**
* 申请退款 - 使用商户订单号
* @param $out_trade_no 商户订单号
* @param $out_refund_no 退款单号
* @param $total_fee 总金额(单位:分)
* @param $refund_fee 退款金额(单位:分)
* @param $op_user_id 操作员账号
* @return array
*/
public function refund($out_trade_no,$out_refund_no,$total_fee,$refund_fee,$op_user_id){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["nonce_str"] = $this->get_nonce_string();
$data["out_trade_no"] = $out_trade_no;
$data["out_refund_no"] = $out_refund_no;
$data["total_fee"] = $total_fee;
$data["refund_fee"] = $refund_fee;
$data["op_user_id"] = $op_user_id;
$result = $this->post(self::URL_REFUND, $data,true);
return $result;
}
/**
* 申请退款 - 使用微信订单号
* @param $out_trade_no 商户订单号
* @param $out_refund_no 退款单号
* @param $total_fee 总金额(单位:分)
* @param $refund_fee 退款金额(单位:分)
* @param $op_user_id 操作员账号
* @return array
*/
public function refundByTransId($transaction_id,$out_refund_no,$total_fee,$refund_fee,$op_user_id){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["nonce_str"] = $this->get_nonce_string();
$data["transaction_id"] = $transaction_id;
$data["out_refund_no"] = $out_refund_no;
$data["total_fee"] = $total_fee;
$data["refund_fee"] = $refund_fee;
$data["op_user_id"] = $op_user_id;
$result = $this->post(self::URL_REFUND, $data,true);
return $result;
}
/**
* 下载对账单
* @param $bill_date 下载对账单的日期,格式:20140603
* @param $bill_type 类型
* @return array
*/
public function downloadBill($bill_date,$bill_type = 'ALL'){
$data = array();
$data["appid"] = $this->_config["appid"];
$data["mch_id"] = $this->_config["mch_id"];
$data["bill_date"] = $bill_date;
$data["bill_type"] = $bill_type;
$data["nonce_str"] = $this->get_nonce_string();
$result = $this->post(self::URL_DOWNLOADBILL, $data);
return $result;
}
/**
* 获取js支付使用的第二个参数
*/
public function get_package($prepay_id) {
$data = array();
$data["appId"] = $this->_config["appid"];
$data["timeStamp"] = time();
$data["nonceStr"] = $this->get_nonce_string();
$data["package"] = "prepay_id=$prepay_id";
$data["signType"] = "MD5";
$data["paySign"] = $this->sign($data);
return $data;
}
/**
* 获取发送到通知地址的数据(在通知地址内使用)
* @return 结果数组,如果不是微信服务器发送的数据返回null
* appid
* bank_type
* cash_fee
* fee_type
* is_subscribe
* mch_id
* nonce_str
* openid
* out_trade_no 商户订单号
* result_code
* return_code
* sign
* time_end
* total_fee 总金额
* trade_type
* transaction_id 微信支付订单号
*/
public function get_back_data() {
$xml = file_get_contents("php://input");
$data = $this->xml2array($xml);
if ($this->validate($data)) {
return $data;
} else {
return null;
}
}
/**
* 验证数据签名
* @param $data 数据数组
* @return 数据校验结果
*/
public function validate($data) {
if (!isset($data["sign"])) {
return false;
}
$sign = $data["sign"];
unset($data["sign"]);
return $this->sign($data) == $sign;
}
/**
* 响应微信支付后台通知
* @param $return_code 返回状态码 SUCCESS/FAIL
* @param $return_msg 返回信息
*/
public function response_back($return_code="SUCCESS", $return_msg=null) {
$data = array();
$data["return_code"] = $return_code;
if ($return_msg) {
$data["return_msg"] = $return_msg;
}
$xml = $this->array2xml($data);
print $xml;
}
}
接下来我是在 controller/order.php 文件下封装个方法 这里也用到了log.php ,注意看使用方法。在调bug时非常好用。
Order.php
/**
* wxPay 微信支付接口
* @param $Id 订单ID
* @author lyne
*/
public function wxPay($id){
require_once (APPPATH.'libraries/Wxpay/log.php');
//初始化日志
$logHandler= new CLogFileHandler(APPPATH."libraries/Wxpay/logs/".date('Y-m-d').'.log');
Log::Init($logHandler, 15);
// 查预先生成的订单信息
$this->load->model('order_model');
$o = $this->order_model->getMyOrderDetails($id);
// 调用微信扫码支付接口配置信息
$this->load->config('wxpay_config');
$wxconfig['appid']=$this->config->item('appid');
$wxconfig['mch_id']=$this->config->item('mch_id');
$wxconfig['apikey']=$this->config->item('apikey');
$wxconfig['appsecret']=$this->config->item('appsecret');
$wxconfig['sslcertPath']=$this->config->item('sslcertPath');
$wxconfig['sslkeyPath']=$this->config->item('sslkeyPath');
//由于此类库构造函数需要传参,我们初始化类库就传参数给他吧
$this->load->library('CI_Wechatpay',$wxconfig);
$param['body']=$o['goods_name']; //"商品名称(自行看文档具体填什么)";
$param['attach']=$o['id']; // "我有个参数要传我就穿了个id过来,这里不要有空格避免出错";
$param['detail']=$o['order_code']; //"我填了商品名称加订单号";
$param['out_trade_no']=$o['order_code']; //"商户订单号";
$param['total_fee']=$o['order_amount']*100; //"金额,记得乘以100,微信支付单位默认分";//如$total_fee*100
$param["spbill_create_ip"] =$_SERVER['REMOTE_ADDR'];//客户端IP地址
$param["time_start"] = date("YmdHis");//请求开始时间
$param["time_expire"] = date("YmdHis", time() + 600);//请求超时时间 10分钟
$param["goods_tag"] = urldecode('运费:') . $o['postage']; //商品标签,自行填写
$param["notify_url"] = "http://".$_SERVER['HTTP_HOST']."/wxnotify/"; //自行定义异步通知url
$param["trade_type"] = "NATIVE";//扫码支付模式二
$param["product_id"] = $o['goods_id']; //正好有产品id就传了个,看文档说自己定义
//调用统一下单API接口
$result=$this->ci_wechatpay->unifiedOrder($param);//这里可以加日志输出,
// 写入日志
log::debug(json_encode($result));
//成功(return_code和result_code都为SUCCESS)就会返回含有带支付二维码链接的数据
$data=array();
if (isset($result["code_url"]) && !empty($result["code_url"])) {//二维码图片链接
$data['wxurl'] = $result["code_url"];
//这里传递商户订单号到扫码视图,是因为我想做跳转,根据商户号去查询订单是否支付成功,如果成功了就跳转,定时轮询微信服务器(这个谁有好的方法可以分享给我啊,表示感谢啦)
$data['orderno'] = $param['out_trade_no'];
// 写入日志
$this->assign('time_expire',strtotime($param["time_expire"])); //订单失效时间
$this->assign('order_no',$data['orderno']);
$this->assign('wxurl',urlencode($data['wxurl'])); // 获取到的二维码地址
$this->display('wxpay/index.html');
}
}
view/wxpay/index.html
微信支付
微信扫码支付测试
OK!说的很细了,大家应该成功了吧。 欢迎大家发现问题并提出!共同解决。