1符匾、微支付
準(zhǔn)備工作
1.1 在微信開(kāi)放平臺(tái)（https://open.weixin.qq.com）注冊(cè)并認(rèn)證成為開(kāi)發(fā)者賬號(hào)
1.2 在移動(dòng)應(yīng)用內(nèi)創(chuàng)建移動(dòng)應(yīng)用，審核通過(guò)后獲取到該應(yīng)用的AppID和AppSecret
1.3 點(diǎn)擊微支付后面的申請(qǐng)進(jìn)入微支付申請(qǐng)流程瘩例，這里分為已有微商戶和沒(méi)有微商戶兩種啊胶，沒(méi)有微商戶的直接申請(qǐng)即可；已有微商戶的需要進(jìn)行APPID授權(quán)（產(chǎn)品中心→APP支付→appid授權(quán)）垛贤，進(jìn)行授權(quán)以后說(shuō)明這個(gè)app就可以調(diào)用app支付了;
1.4 HBuilderX manifest.json文件配置APP SDK選項(xiàng)勾選微信支付焰坪，填入微信開(kāi)放平臺(tái)獲取到的appid；

1.5 準(zhǔn)備后端代碼聘惦，這里我使用的是thinkphp5.0作為后端api接口關(guān)鍵控制器如下

    <?php

    namespace app\api\controller;
    use app\common\model\Wxpaylog;
    use xcxwxpay\database\WxPayUnifiedOrder;
    use xcxwxpay\database\WxPayTransferPayment;
    use xcxwxpay\WxPayApi;
    use app\api\common\orderlogic;
    use xcxwxpay\database\WxPayResults;
    use xcxwxpay\WxPayConfig;

 class Wxapppay extends Filter{
public function index(){
    $action = input("get.a","");
    switch ($action){
        case "payinfo":
            $oid = input("post.oid",-1);
            if(empty($oid)||$oid==""||!is_numeric($oid)||$oid==-1) $this->apireturn(0,"invalid oid");
            $result = $this->payinfo($oid);
            if($result["errors"]!="") $this->apireturn(0,$result["errors"]);
            $ostring = $result["orderstring"];
            $this->apireturn(1,"請(qǐng)求成功",$ostring);
            break;
        default:
            $this->apireturn(0,"invalid action");
            break;
    }
}
private function payinfo($oid){
    $orderlogic = new orderlogic();
    $info = $orderlogic->getOrderInfo($oid);
    // 統(tǒng)一下單獲取預(yù)支付訂單信息
    $response = $this->getOrderstring("你app的名稱-訂單支付",$info["number"],$info["paymoney"]["values"]);
    // 生成調(diào)起支付請(qǐng)求的參數(shù)
    $input = new WxPayTransferPayment();
    $input->setPrepayId($response["prepay_id"]);

    if(!$input->isPrepayIdSet()){
        return ["errors"=>"缺少調(diào)起支付必填參數(shù)prepayid"];
    }
    $input->setAppid(WxPayConfig::$APPID);
    $input->setPartnerId(WxPayConfig::$MCHID);
    $input->setPackage("Sign=WXPay");
    $input->setNonceStr(self::getNonceStr());//隨機(jī)字符串
    $input->setTimeStamt(time());

    $arr = array(
        "appid" => $input->getAppid(),
        "partnerid"=>$input->getPartnerId(),
        "prepayid"=>$input->getPrepayId(),
        "package"=>"Sign=WXPay",
        "noncestr"=>$input->getNonceStr(),
        "timestamp" => $input->getTimeStamt(),
    );
    $sign = $this->makeSign($arr);

    $data = array(
        "appid" => $input->getAppid(),
        "partnerid"=>$input->getPartnerId(),
        "prepayid"=>$input->getPrepayId(),
        "package"=>"Sign=WXPay",
        "noncestr"=>$input->getNonceStr(),
        "timestamp" => $input->getTimeStamt(),
        "paySign"   =>  $sign
    );
    return ["errors"=>"","orderstring"=>$data];

}
// 統(tǒng)一下單
private function getOrderstring($body,$out_trade_no,$total_amount)
{
    //統(tǒng)一下單
    $money = $total_amount;
    $money = 0.01;
    $input = new WxPayUnifiedOrder();

    $input->setBody($body);
    $input->setAttach("");
    $input->setOutTradeNo($out_trade_no);
    $input->setTotalFee($money * 100);
    $input->setTimeStart(date("YmdHis"));
    $input->setTimeExpire(date("YmdHis", time() + 3*24*60*60));
    $input->setNotifyUrl("https://xxxxxxx.com/api/wxapppay/notify.html");
    $input->setTradeType("APP");
    $order = WxPayApi::unifiedOrder($input);

    return $order;
}
public function notify()
{

    $xml = file_get_contents("php://input");

    $result = WxPayResults::Init($xml);
    Writef("wxpaylog.txt",$xml);
    if($result["result_code"]=="SUCCESS"){
        $ordernumber = $result["out_trade_no"];
        $paytime = formateTimeStamp(time());
        $orderlogic = new orderlogic();
        $orderlogic->payOrder($ordernumber,$paytime,"微支付");
        $arr = array("return_code"=>"SUCCESS","return_msg"=>"OK");
        echo $this->toXml($arr);
    }
    $this->writepaylog($result);
}
private function writepaylog($result){
    $wxlog = new Wxpaylog();
    $wxlog["appid"]             = $result["appid"];
    $wxlog["bank_type"]         = $result["bank_type"];
    $wxlog["cash_fee"]          = $result["cash_fee"];
    $wxlog["fee_type"]          = $result["fee_type"];
    $wxlog["is_subscribe"]      = $result["is_subscribe"];
    $wxlog["mch_id"]            = $result["mch_id"];
    $wxlog["nonce_str"]         = $result["nonce_str"];
    $wxlog["openid"]            = $result["openid"];
    $wxlog["out_trade_no"]      = $result["out_trade_no"];
    $wxlog["result_code"]       = $result["result_code"];
    $wxlog["return_code"]       = $result["return_code"];
    $wxlog["sign"]              = $result["sign"];
    $wxlog["time_end"]          = $result["time_end"];
    $wxlog["total_fee"]         = $result["total_fee"];
    $wxlog["trade_type"]        = $result["trade_type"];
    $wxlog["transaction_id"]    = $result["transaction_id"];
    $wxlog->save();
}
/**
 * 輸出xml字符
 **/
private function toXml($arr)
{
    if (!is_array($arr)
        || count($arr) <= 0
    ) {
        return "";
    }

    $xml = "<xml>";
    foreach ($arr as $key => $val) {
        if (is_numeric($val)) {
            $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
        } else {
            $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
        }
    }
    $xml .= "</xml>";
    return $xml;
}
/**
 * 格式化參數(shù)格式化成url參數(shù)
 */
private function toUrlParams($arr)
{
    $buff = "";
    foreach ($arr as $k => $v) {
        if ($k != "sign" && $v != "" && !is_array($v)) {
            $buff .= $k . "=" . $v . "&";
        }
    }

    $buff = trim($buff, "&");
    return $buff;
}
/**
 * 生成簽名
 * @return string 簽名某饰，本函數(shù)不覆蓋sign成員變量，如要設(shè)置簽名需要調(diào)用setSign方法賦值
 */
private function makeSign($arr)
{
    //簽名步驟一：按字典序排序參數(shù)
    ksort($arr);
    $string = $this->toUrlParams($arr);
    //簽名步驟二：在string后加入KEY
    $string = $string . "&key=" . WxPayConfig::$KEY;

    //簽名步驟三：MD5加密
    $string = md5($string);
    //簽名步驟四：所有字符轉(zhuǎn)為大寫(xiě)
    $result = strtoupper($string);
    return $result;
}
/**
 *
 * 產(chǎn)生隨機(jī)字符串善绎，不長(zhǎng)于32位
 * @param int $length
 * @return string 產(chǎn)生的隨機(jī)字符串
 */
private static function getNonceStr($length = 32)
{
    $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
    $str = "";
    for ($i = 0; $i < $length; $i++) {
        $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }
    return $str;
}
    }

1.6 前端uni-app代碼如下,點(diǎn)擊支付后執(zhí)行如下代碼

var uri = "Wxapppay/index.html?a=payinfo";
                var param = {oid:that.orderinfo.oid};
                that.$post(uri,param,"POST",function(res){
                    var jsondata = res.data;
                    //console.log(JSON.stringify(jsondata));
                    if(jsondata.code==1){
                        var orderinfo = jsondata.data;
                        if(orderinfo){
                            uni.requestPayment({
                                provider:"wxpay",
                                timeStamp:orderinfo.timestamp,
                                nonceStr:orderinfo.noncestr,
                                package:orderinfo.package,
                                signType:"MD5",
                                paySign:orderinfo.paySign,
                                orderInfo:{
                                    appid:orderinfo.appid,
                                    noncestr:orderinfo.noncestr,
                                    package:"Sign=WXPay",
                                    partnerid:orderinfo.partnerid,
                                    prepayid:orderinfo.prepayid,
                                    timestamp:orderinfo.timestamp,
                                    sign:orderinfo.paySign,
                                },
                                success:function(res){
                                    uni.showToast({
                                        title:"支付成功",
                                        icon:"success",
                                        duration:2000,
                                        complete:function(){
                                            uni.reLaunch({
                                                url:"showresult?paytype=1"
                                            });
                                        }
                                    });
                                },
                                fail:function(res){
                                    // console.log(JSON.stringify(res));
                                    uni.showToast({
                                        title: '支付失敗黔漂，請(qǐng)到訂單中心重新支付',
                                        icon: "none",
                                        duration: 2000,
                                        complete: function () {
                                            wx.reLaunch({
                                                url: 'showresult?paytype=3',
                                            });
                                        }
                                    });
                                }
                            });
                        }
                    }else{
                        
                    }
                },function(){},function(){});

注意 注意 注意：如果是默認(rèn)基座的話會(huì)提示：HBuilder mainifest.json中配置的支付appid和生成訂單使用的appid不一致,如果是HB調(diào)試請(qǐng)?jiān)诰€打包,http://ask.dcloud.net.cn/article/282"，必須使用自定義基座才能真機(jī)調(diào)試支付

2禀酱、支付寶支付
準(zhǔn)備工作
1.1 在支付寶平臺(tái)注冊(cè)商戶用戶
1.2 在支付寶商戶后臺(tái)產(chǎn)品中心簽約app支付
1.3 在螞蟻金服開(kāi)放平臺(tái)（https://open.alipay.com）開(kāi)發(fā)中心→網(wǎng)頁(yè)和移動(dòng)應(yīng)用 新增app應(yīng)用炬守，通過(guò)以后設(shè)置好應(yīng)用公鑰，系統(tǒng)會(huì)自動(dòng)生成支付寶公鑰 注意新增的時(shí)候 iOS bundle ID一定要填寫(xiě)正確
1.4 HBuilder mainifest.json中設(shè)置支付寶ios scheme用于支付完成跳轉(zhuǎn)回應(yīng)用比勉。
1.5 后臺(tái)代碼參考支付寶示例代碼

<?php
namespace app\api\controller;

use app\api\common\orderlogic;

class Alipay extends Filter{
public function index(){
    $action = input("get.a","");
    switch ($action){
        case "payinfo":
            $oid = input("post.oid",-1);
            if(empty($oid)||$oid==""||!is_numeric($oid)||$oid==-1) $this->apireturn(0,"invalid oid");
            $result = $this->payinfo($oid);

            $this->apireturn(1,"請(qǐng)求成功",$result);
            break;
        default:
            $this->apireturn(0,"invalid action");
            break;
    }
}

private function payinfo($oid){
    $orderlogic = new orderlogic();
    $info = $orderlogic->getOrderInfo($oid);
    Vendor('aop.AopClient');
    $aop = new \AopClient();
    $alipayConfig = config("alipayinfo");
    $aop->gatewayUrl    = $alipayConfig["gatewayUrl"];
    $aop->appId         = $alipayConfig["appid"];
    $aop->rsaPrivateKey = $alipayConfig["privateKey"];
    $aop->format        = "json";
    $aop->charset       = "utf-8";
    $aop->signType      = "RSA2";
    $aop->alipayrsaPublicKey = $alipayConfig["publicKey"];
    Vendor("aop.request.AlipayTradeAppPayRequest");
    $request = new \AlipayTradeAppPayRequest();

    $request->setNotifyUrl($alipayConfig["notifyUrl"]);

    $body = "你的app名稱訂單支付";
    $out_trade_no = $info["number"];
    $total_amount = formatMoney($info["paymoney"]["values"]);
    $total_amount = 0.01;// 實(shí)際上線后注釋掉
    $bizcontent = "{\"body\":\"$body\","
        . "\"subject\": \"你的app名稱-訂單支付\","
        . "\"out_trade_no\": \"$out_trade_no\","
        . "\"timeout_express\": \"30m\","
        . "\"total_amount\": \"$total_amount\","
        . "\"product_code\":\"QUICK_MSECURITY_PAY\""
        . "}";
    $request->setBizContent($bizcontent);
    $response = $aop->sdkExecute($request);

    return $response;
}
public function notify()
{
    $data = input("post.");

    $str = ToUrlParams($data);
    Vendor('aop.AopClient');
    $aop = new \AopClient();
    $alipayConfig = config("alipayinfo");
    $aop->alipayrsaPublicKey = $alipayConfig["publicKey"];
    $flag = $aop->rsaCheckV1(input("post."), NULL, "RSA2");

    if($flag){
        // 消息驗(yàn)證通過(guò),更改訂單狀態(tài)
        $states = input("post.trade_status");

        if($states == "TRADE_SUCCESS"){
            $ordernumber = input("post.out_trade_no");
            $paytime = input("post.gmt_payment");
            $orderlogic = new orderlogic();
            $orderlogic->payOrder($ordernumber,$paytime,"支付寶");
        }
        echo "success";
    }
    echo 'filed';
}
}

1.6 uni-app前端代碼

                var uri = "Alipay/index.html?a=payinfo";
                var param = {oid:that.orderinfo.oid}
                that.$post(uri,param,"POST",function(res){
                    var jsondata = res.data;
                    // console.log(JSON.stringify(jsondata));
                    if(jsondata.code==1){
                        var orderinfo = jsondata.data;
                        if(orderinfo){
                            uni.requestPayment({
                                provider:"alipay",
                                orderInfo:orderinfo,
                                success:function(res){
                                    uni.showToast({
                                        title:"支付成功",
                                        icon:"success",
                                        duration:2000,
                                        complete:function(){
                                            uni.reLaunch({
                                                url:"showresult?paytype=1"
                                            });
                                        }
                                    });
                                },
                                fail:function(res){
                                    uni.showToast({
                                        title: '支付失敗，請(qǐng)到訂單中心重新支付',
                                        icon: "none",
                                        duration: 2000,
                                        complete: function () {
                                            wx.reLaunch({
                                                url: 'showresult?paytype=3',
                                            });
                                        }
                                    });
                                }
                            });
                        }else{
                            
                        }
                    }else{
                        
                    }
                },function(){},function(){});