微信小程序支付

梦里梦外; 2022-05-21 08:20 267阅读 0赞

![70][]

先看一下官方的支付接口，我们需要拿到以上字段，才能发起微信支付。

直接贴代码

//来源于app.js定义的全局地址
      var url = app.baseURL;
      var obj = {
        UID: UID,//用户id
        ProductID: ProductID,//产品id
      };
      
      // 从session中拿到令牌
      var token = wx.getStorageSync("token");
    
      //1.第一步将用户信息和商品id发送给后台生成订单orderId和需要付款的价格payPrice
      wx.request({
        url: url + 'v1/orders',
        method: "post",
        data: obj,
        header: { 'content-type': 'application/json', "Authorization": "Bearer " + token },
        success: function (res) {
          //  console.log("这里的")
          //  console.log(res);
          var thisid = res.data.id;
          if (res.data.code == 200) {
            wx.request({
              url: url + 'v1/groupon/pay',
              header: { 'content-type': 'application/json', "Authorization": "Bearer " + token },
              method: 'post',
              data: {   //这里拿到这两个字段去付款
                orderId: res.data.orderId,
                payPrice: res.data.payPrice
              },
              success: function (res) {
                wx.requestPayment({
                  'timeStamp': res.data.timeStamp,
                  'nonceStr': res.data.nonceStr,
                  'package': res.data.package,
                  'signType': 'MD5',
                  'paySign': res.data.paySign,
                  'success': function (requestPaymentRes) {
                    //    console.log("成功了")
    
                    if (requestPaymentRes.errMsg == 'requestPayment:ok') {
                      //  console.log("成功了得r.errMsg == 'requestPayment:ok'");
                      //成功后跳转到你想要的界面
                      wx.redirectTo({
                        url: '你想跳的界面'
                      })
                    } else {
                      //  console.log("我得else")
                    }
                  },
                  'fail': function (requestPaymentRes) {
                    //  console.log("失败了")
                    //  console.log(requestPaymentRes)
                    wx.redirectTo({
                      url: '../erro/erro?id=' + res.data.id,
                      success: function (res) { },
                      fail: function (res) { },
                      complete: function (res) { },
                    })
    
                  }
                });
              },
            })
          } else {
            wx.showModal({
              title: '提示',
              content: res.data.message,
              showCancel: false
            })
          }
        }
      })

[70]: /images/20220521/800bafc2dcac42bda6a56f4aa59c99fa.png