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微信JSAPI支付接口GET不到参数问题解决

2016-09-25 10:40 525 查看 
<?php
/**
* JS_API支付demo
* ====================================================
* 在微信浏览器里面打开H5网页中执行JS调起支付。接口输入输出数据格式为JSON。
* 成功调起支付需要三个步骤：
* 步骤1：网页授权获取用户openid
* 步骤2：使用统一支付接口，获取prepay_id
* 步骤3：使用jsapi调起支付
*/
include_once("../WxPayPubHelper/WxPayPubHelper.php");

if($_SERVER['REQUEST_METHOD']=='POST'){
$amount=$_POST['jine'];
}else{
$amount=$_GET['jine'];
}
$total = floatval($amount);
$total = round($total*100); // 将元转成分
if(empty($total)){
$total = 100;
}

//使用jsapi接口
$jsApi = new JsApi_pub();

//=========步骤1：网页授权获取用户openid============
//通过code获得openid

if (!isset($_GET['code']))
{
//触发微信返回code码
$url = $jsApi->createOauthUrlForCode(WxPayConf_pub::JS_API_CALL_URL);

$state = json_encode(array(
"total_fee" => $total,
));
$url = str_replace("STATE", $state, $url);
//echo $url;die;

Header("Location: $url");
}else
{
//获取code码，以获取openid
$code = $_GET['code'];
$jsApi->setCode($code);
$openid = $jsApi->getOpenId();

$state = $_GET['state'];
$state = str_replace("\\", "", $state);
$param = json_decode($state, true);
$total = $param['total_fee'];
}

//=========步骤2：使用统一支付接口，获取prepay_id============
//使用统一支付接口
$unifiedOrder = new UnifiedOrder_pub();

//设置统一支付接口参数
//设置必填参数
//appid已填,商户无需重复填写
//mch_id已填,商户无需重复填写
//noncestr已填,商户无需重复填写
//spbill_create_ip已填,商户无需重复填写
//sign已填,商户无需重复填写
$unifiedOrder->setParameter("openid","$openid");//商品描述
$unifiedOrder->setParameter("body","贡献一分钱");//商品描述
//自定义订单号，此处仅作举例
$timeStamp = time();
$out_trade_no = WxPayConf_pub::APPID."$timeStamp";
$unifiedOrder->setParameter("out_trade_no","$out_trade_no");//商户订单号
$unifiedOrder->setParameter("total_fee",$total);//总金额
$unifiedOrder->setParameter("notify_url",WxPayConf_pub::NOTIFY_URL);//通知地址
$unifiedOrder->setParameter("trade_type","JSAPI");//交易类型
//非必填参数，商户可根据实际情况选填
//$unifiedOrder->setParameter("sub_mch_id","XXXX");//子商户号
//$unifiedOrder->setParameter("device_info","XXXX");//设备号
//$unifiedOrder->setParameter("attach","XXXX");//附加数据
//$unifiedOrder->setParameter("time_start","XXXX");//交易起始时间
//$unifiedOrder->setParameter("time_expire","XXXX");//交易结束时间
//$unifiedOrder->setParameter("goods_tag","XXXX");//商品标记
//$unifiedOrder->setParameter("openid","XXXX");//用户标识
//$unifiedOrder->setParameter("product_id","XXXX");//商品ID

$prepay_id = $unifiedOrder->getPrepayId();
//=========步骤3：使用jsapi调起支付=========
4000
===
$jsApi->setPrepayId($prepay_id);

$jsApiParameters = $jsApi->getParameters();
//echo $jsApiParameters;
?>

<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8"/>
<title>微信安全支付</title>

<script type="text/javascript">

//调用微信JS api 支付
function jsApiCall()
{
WeixinJSBridge.invoke(
'getBrandWCPayRequest',
<?php echo $jsApiParameters; ?>,
function(res){
WeixinJSBridge.log(res.err_msg);
//alert(res.err_code+res.err_desc+res.err_msg);
}
);
}

function callpay()
{
if (typeof WeixinJSBridge == "undefined"){
if( document.addEventListener ){
document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);
}else if (document.attachEvent){
document.attachEvent('WeixinJSBridgeReady', jsApiCall);
document.attachEvent('onWeixinJSBridgeReady', jsApiCall);
}
}else{
jsApiCall();
}
}
callpay();
</script>
</head>
<body>

</body>
</html>
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