1、服务器端使用TP3.2处理（随便写在一个Controller里面）
/* 小程序报名，生成订单 */ public function make_order(){ if(IS_POST){ $data['openid'] = I('POST.openid'); $data_total = I('POST.data_total'); $data['crsNo'] = 'W'.date('YmdHis',time()).'-'.randomkeys(2); $insertId = M('home_order','xxf_witkey_')->add($data); if($insertId){ $this->insertID = $insertId; $this->data_total = $data_total*100; //订单总金额，单位分 /* 调用微信【统一下单】 */ $this->pay($data_total*100,$data['openid'],$data['crsNo']); }else{ echo $insertId; } //echo json_encode($re); } }
/* 首先在服务器端调用微信【统一下单】接口，返回prepay_id和sign签名等信息给前端，前端调用微信支付接口 */ private function Pay($total_fee,$openid,$order_id){ if(empty($total_fee)){ echo json_encode(array('state'=>0,'Msg'=>'金额有误'));exit; } if(empty($openid)){ echo json_encode(array('state'=>0,'Msg'=>'登录失效，请重新登录(openid参数有误)'));exit; } if(empty($order_id)){ echo json_encode(array('state'=>0,'Msg'=>'自定义订单有误'));exit; } $appid = '小程序appid';//如果是公众号 就是公众号的appid;小程序就是小程序的appid $body = '自己填'; $mch_id = '商户账号'; $KEY = '你申请微信支付的key'; $nonce_str = randomkeys(32);//随机字符串 $notify_url = 'https://m.******.com/index.php/Home/Xiaoxxf/xiao_notify_url'; //支付完成回调地址url,不能带参数 $out_trade_no = $order_id;//商户订单号 $spbill_create_ip = $_SERVER['SERVER_ADDR']; $trade_type = 'JSAPI';//交易类型 默认JSAPI //这里是按照顺序的 因为下面的签名是按照(字典序)顺序 排序错误 肯定出错 $post['appid'] = $appid; $post['body'] = $body; $post['mch_id'] = $mch_id; $post['nonce_str'] = $nonce_str;//随机字符串 $post['notify_url'] = $notify_url; $post['openid'] = $openid; $post['out_trade_no'] = $out_trade_no; $post['spbill_create_ip'] = $spbill_create_ip;//服务器终端的ip $post['total_fee'] = intval($total_fee); //总金额 最低为一分钱 必须是整数 $post['trade_type'] = $trade_type; $sign = $this->MakeSign($post,$KEY); //签名 $this->sign = $sign; $post_xml = '<xml> <appid>'.$appid.'</appid> <body>'.$body.'</body> <mch_id>'.$mch_id.'</mch_id> <nonce_str>'.$nonce_str.'</nonce_str> <notify_url>'.$notify_url.'</notify_url> <openid>'.$openid.'</openid> <out_trade_no>'.$out_trade_no.'</out_trade_no> <spbill_create_ip>'.$spbill_create_ip.'</spbill_create_ip> <total_fee>'.$total_fee.'</total_fee> <trade_type>'.$trade_type.'</trade_type> <sign>'.$sign.'</sign> </xml> '; //统一下单接口prepay_id $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder'; $xml = $this->http_request($url,$post_xml); //POST方式请求http $array = $this->xml2array($xml); //将【统一下单】api返回xml数据转换成数组，全要大写 if($array['RETURN_CODE'] == 'SUCCESS' && $array['RESULT_CODE'] == 'SUCCESS'){ $time = time(); $tmp=''; //临时数组用于签名 $tmp['appId'] = $appid; $tmp['nonceStr'] = $nonce_str; $tmp['package'] = 'prepay_id='.$array['PREPAY_ID']; $tmp['signType'] = 'MD5'; $tmp['timeStamp'] = "$time"; $data['state'] = 1; $data['timeStamp'] = "$time"; //时间戳 $data['nonceStr'] = $nonce_str; //随机字符串 $data['signType'] = 'MD5'; //签名算法，暂支持 MD5 $data['package'] = 'prepay_id='.$array['PREPAY_ID']; //统一下单接口返回的 prepay_id 参数值，提交格式如：prepay_id=* $data['paySign'] = $this->MakeSign($tmp,$KEY); //签名,具体签名方案参见微信公众号支付帮助文档; $data['out_trade_no'] = $out_trade_no; }else{ $data['state'] = 0; $data['text'] = "错误"; $data['RETURN_CODE'] = $array['RETURN_CODE']; $data['RETURN_MSG'] = $array['RETURN_MSG']; } echo json_encode($data); } /** * 生成签名, $KEY就是支付key * @return 签名 */ public function MakeSign( $params,$KEY){ //签名步骤一：按字典序排序数组参数 ksort($params); $string = $this->ToUrlParams($params); //参数进行拼接key=value&k=v //签名步骤二：在string后加入KEY $string = $string . "&key=".$KEY; //签名步骤三：MD5加密 $string = md5($string); //签名步骤四：所有字符转为大写 $result = strtoupper($string); return $result; } /** * 将参数拼接为url: key=value&key=value * @param $params * @return string */ public function ToUrlParams( $params ){ $string = ''; if( !empty($params) ){ $array = array(); foreach( $params as $key => $value ){ $array[] = $key.'='.$value; } $string = implode("&",$array); } return $string; } /** * 调用接口， $data是数组参数 * @return 签名 */ public function http_request($url,$data = null,$headers=array()) { $curl = curl_init(); if( count($headers) >= 1 ){ curl_setopt($curl, CURLOPT_HTTPHEADER, $headers); } curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); if (!empty($data)){ curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); } curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); $output = curl_exec($curl); curl_close($curl); return $output; } //获取xml里面数据，转换成array private function xml2array($xml){ $p = xml_parser_create(); xml_parse_into_struct($p, $xml, $vals, $index); xml_parser_free($p); $data = ""; foreach ($index as $key=>$value) { if($key == 'xml' || $key == 'XML') continue; $tag = $vals[$value[0]]['tag']; $value = $vals[$value[0]]['value']; $data[$tag] = $value; } return $data; }
/** * 将xml转为array * @param string $xml * return array */ public function xml_to_array($xml){ if(!$xml){ return false; } //将XML转为array //禁止引用外部xml实体 libxml_disable_entity_loader(true); $data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true); return $data; }
//还有就是，微信要求支付后处理微信发送的回调内容，就是告诉商户，订单交易成功了，你要发送‘我知道了’给微信。
//还有一点就是：这里就是回调url，你预支付填写的notify_url地址。废话不多说，看下面
/* 微信支付完成，回调地址url方法 xiao_notify_url() */ public function xiao_notify_url(){ $post = post_data(); //接受POST数据XML个数
/*
function post_data(){
$receipt = $_REQUEST;
if($receipt==null){
$receipt = file_get_contents("php://input");
if($receipt == null){
$receipt = $GLOBALS['HTTP_RAW_POST_DATA'];
}
}
return $receipt;
}
*/
$post_data = $this->xml_to_array($post); //微信支付成功，返回回调地址url的数据：XML转数组Array $postSign = $post_data['sign']; unset($post_data['sign']); /* 微信官方提醒： * 商户系统对于支付结果通知的内容一定要做【签名验证】, * 并校验返回的【订单金额是否与商户侧的订单金额】一致， * 防止数据泄漏导致出现“假通知”，造成资金损失。 */ ksort($post_data);// 对数据进行排序 $str = $this->ToUrlParams($post_data);//对数组数据拼接成key=value字符串 $user_sign = strtoupper(md5($post_data)); //再次生成签名，与$postSign比较 $where['crsNo'] = $post_data['out_trade_no']; $order_status = M('home_order','xxf_witkey_')->where($where)->find(); if($post_data['return_code']=='SUCCESS'&&$postSign){ /* * 首先判断，订单是否已经更新为ok，因为微信会总共发送8次回调确认 * 其次，订单已经为ok的，直接返回SUCCESS * 最后，订单没有为ok的，更新状态为ok，返回SUCCESS */ if($order_status['order_status']=='ok'){ $this->return_success(); }else{ $updata['order_status'] = 'ok'; if(M('home_order','xxf_witkey_')->where($where)->save($updata)){ $this->return_success(); } } }else{ echo '微信支付失败'; } } /* * 给微信发送确认订单金额和签名正确，SUCCESS信息 -xzz0521 */ private function return_success(){ $return['return_code'] = 'SUCCESS'; $return['return_msg'] = 'OK'; $xml_post = '<xml> <return_code>'.$return['return_code'].'</return_code> <return_msg>'.$return['return_msg'].'</return_msg> </xml>'; echo $xml_post;exit; }
2、小程序端发起下单和支付请求：
/** * 自定义方法，校验form数据 */ submitForm: function (e) { //这里是小程序wxml提交form var that = this;
//#code ，注意这里的form数据你要校验哦。 wx.request({ url: 'https://m.******.com/index.php/Home/Xiaoxxf/make_order', header: { "Content-Type": "application/x-www-form-urlencoded" }, method: "POST", data: { openid: wx.getStorageSync('openid'), data_name: e.detail.value.data_name, data_phone: e.detail.value.data_phone, data_IDcard: e.detail.value.data_IDcard, data_num: e.detail.value.data_num, data_addr: e.detail.value.data_addr, data_remark: e.detail.value.data_remark, data_total: e.detail.value.data_num * that.data.unitPrice,a_id:that.data.a_id}, success: function (res) { if (res.data.state==1) { // --------- 订单生成成功，发起支付请求 ------------------ wx.requestPayment({ timeStamp: res.data.timeStamp, nonceStr: res.data.nonceStr, //字符串随机数 package: res.data.package, signType: res.data.signType, paySign: res.data.paySign, 'success': function (res) { console.log(res.errMsg); //requestPayment:ok==>调用支付成功 wx.showToast({ title: '报名成功',//这里打印出报名成功 icon: 'success', duration: 1000 }) }, 'fail': function (res) { console.log(res.errMsg); }, 'complete': function (res) { console.log(res.errMsg); } }) } else if (res.data.state == 0){ wx.showToast({ title: res.data.Msg, icon: 'fail', duration: 1000 }) }else{ wx.showToast({ title: '系统繁忙，请稍后重试~', icon: 'fail', duration: 1000 }) } } }) }