给所有支付接口加上了支付宝

pages/submit/submit.js

@@ -24,6 +24,8 @@ Page({
     canSubmit: false,
     isPaying: false,
 
+    payMethod: 'wechat',
+
     orderId: '',
     payParams: null,
     checkCount: 0,
@@ -133,6 +135,13 @@ Page({
     this.setData({ zhiding: e.detail.value.trim() })
   },
 
+  onSelectPayMethod(e) {
+    const method = e.currentTarget.dataset.method
+    if (method && method !== this.data.payMethod) {
+      this.setData({ payMethod: method })
+    }
+  },
+
   checkFormValid() {
     const { nicheng } = this.data
     this.setData({ canSubmit: nicheng && nicheng.length > 0 && nicheng.length <= 15 })
@@ -164,7 +173,8 @@ Page({
       beizhu: beizhu || '',
       zhiding: zhiding || '',
       jine: jine * quantity,
-      shuliang: quantity
+      shuliang: quantity,
+      pay_method: this.data.payMethod
     }
 
     request({
@@ -181,6 +191,7 @@ Page({
         if (response.code === 0 && response.data) {
           const orderId = response.data.dingdanid
           const payParams = response.data.payParams || {}
+          const payMethod = response.data.payMethod || this.data.payMethod
           this.setData({
             orderId: orderId,
             payParams: payParams,
@@ -188,7 +199,11 @@ Page({
             isPaying: true,
             checkCount: 0
           })
-          this.triggerWxPayment(payParams)
+          if (payMethod === 'alipay') {
+            this.triggerAlipayPayment(payParams, orderId)
+          } else {
+            this.triggerWxPayment(payParams)
+          }
         } else {
           wx.showToast({ title: response.msg || '创建订单失败', icon: 'none' })
           this.setData({ isSubmitting: false, isPaying: false })
@@ -206,6 +221,20 @@ Page({
     })
   },
 
+  triggerAlipayPayment(payParams, orderId) {
+    const qrImage = payParams.qr_image || ''
+    if (!qrImage) {
+      wx.showToast({ title: '支付宝支付参数不完整', icon: 'none' })
+      this.setData({ isSubmitting: false, isPaying: false })
+      return
+    }
+    // base64 图片较大，通过 globalData 传递避免 URL 长度限制
+    app.globalData.alipayQrImage = qrImage
+    wx.navigateTo({
+      url: `/pages/alipay-webview/alipay-webview?orderId=${orderId}`
+    })
+  },
+
   triggerWxPayment(payParams) {
     if (!payParams || !payParams.timeStamp || !payParams.nonceStr ||
         !payParams.package || !payParams.signType || !payParams.paySign) {