微信小程序免密支付解绑（微信小程序免密代扣）
1.定义好pay.wxml，确定绑定小程序的app-id，接下来我们就来聊聊关于微信小程序免密支付解绑?以下内容大家不妨参考一二希望能帮到您!
微信小程序免密支付解绑
1.定义好pay.wxml，确定绑定小程序的app-id
<view class='btn_box'>
<navigator target='miniProgram' extra-data='{{extraData}}' path='pages/index/index' app-id='wxbd687630cd02ce1d' hover-class="none">
<view class='btn_btn nor_linear_bg'>开通免密支付</view>
</navigator>
</view>
2.设置好pay.js参数处理
var util = require('../../utils/util.js');
const app = getApp();
Page({
onShow: function (options) {
console.log(options,'pay.js start');
},
data:{
extraData:'',
localCity:''
},
onLoad: function() {
this.setData({
extraData:util.getextraData(),
localCity:wx.getStorageSync(util.key.cityName) || app.globalData.baseInfo.cityName
})
}
})
绑定免密签证参数设置：
function getextraData() {
const app = getApp();
var extraDataValue = {
appid: app.globalData.baseInfo.appId,
mch_id: app.globalData.baseInfo.mchId,
sub_mch_id: app.globalData.baseInfo.subMchId,
notify_url: app.globalData.baseInfo.notifyUrl,
contract_code: config.contractCode,
contract_display_account: app.globalData.baseInfo.contractDisplayAccount,
plan_id: app.globalData.baseInfo.planId,
request_serial: config.requestSerial,
timestamp: config.timestamp,
sub_appid: app.globalData.baseInfo.subAppId
};
var extraDataSortValue = getSort(extraDataValue);
var signValue = getSign(extraDataSortValue, app.globalData.baseInfo.appSecret);
extraDataValue['sign'] = signValue;
log(TAG, "signSign=[" signValue "]length=" String(signValue).length);
return extraDataValue;
}
3.app.js中 处理绑定后返回值
onShow: function (options) {
let that = this;
var bindStatus = wx.getStorageSync(util.key.bindStatus) || 0;
if (options.scene == 1038) {
var errorCode = options.referrerInfo && options.referrerInfo.extraData && options.referrerInfo.extraData.return_code ? options.referrerInfo.extraData.return_code:'';
if (errorCode == 'SUCCESS') {
var appid = options.referrerInfo.appId;
var contractId = options.referrerInfo.extraData.contract_id;
console.log("签约成功");
that.globalData.baseInfo.appid = appid;
that.globalData.baseInfo.contractId = contractId;
that.globalData.baseInfo.contractIds = contractId;
that.globalData.baseInfo.bindStatus = 1;
wx.setStorageSync(util.key.bindStatus, 1);
//add by wupeng for jump scan
//认证绑定后通过navigateBack跳转到首页scan可以直接退出
var pagelist = getCurrentPages();
var len = pagelist.length;
var init = 0;
var index = 0;
for (var i = 0; i < len; i ) {
if (pagelist[i].route.indexOf("scan/scan") >= 0) {//看路由里面是否有首页
init = 1;
index = i;
}
}
if (init == 1) {
wx.navigateBack({
delta: len - index - 1
});
} else {
wx.reLaunch({
url: "../scan/scan"//这个是默认的单页
});
}
//end add by wupeng
} else {
var msg = options.referrerInfo.extraData.return_msg;
wx.showModal({
title: errorCode,
content: msg,
});
console.log(TAG ':签约失败');
}
}
// }
},
注意主小程序与微信免密小程序跳转存在参数认证问题。
多次绑定和解绑定可能会被微信平台判断拉黑导致再次免密失败。
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