feat: 小程序真实微信支付功能

新增:
1. /api/miniprogram/pay - 创建预支付订单API
2. /api/miniprogram/pay/notify - 支付回调处理
3. /api/miniprogram/login - 小程序登录获取openId

配置:
- 小程序AppID: wxb8bbb2b10dec74aa
- 商户号: 1318592501
- 回调地址: https://soul.cunbao.net/api/miniprogram/pay/notify

更新:
- app.js: 添加getOpenId方法，支付前获取openId
- read.js: processPayment调用真实支付接口
- 支持API不可用时回退到测试模式

app/api/miniprogram/login/route.ts

@@ -0,0 +1,103 @@
+/**
+ * 小程序登录API
+ * 使用code换取openId和session_key
+ * 
+ * 小程序配置:
+ * - AppID: wxb8bbb2b10dec74aa
+ * - AppSecret: 85d3fa31584d06acdb1de4a597d25b7b
+ */
+
+import { NextResponse } from 'next/server'
+
+const MINIPROGRAM_CONFIG = {
+  appId: 'wxb8bbb2b10dec74aa',
+  appSecret: '85d3fa31584d06acdb1de4a597d25b7b',
+}
+
+/**
+ * POST - 小程序登录，获取openId
+ */
+export async function POST(request: Request) {
+  try {
+    const body = await request.json()
+    const { code } = body
+
+    if (!code) {
+      return NextResponse.json({
+        success: false,
+        error: '缺少登录code'
+      }, { status: 400 })
+    }
+
+    console.log('[MiniLogin] 收到登录请求, code:', code.slice(0, 10) + '...')
+
+    // 调用微信接口获取openId
+    const wxUrl = `https://api.weixin.qq.com/sns/jscode2session?appid=${MINIPROGRAM_CONFIG.appId}&secret=${MINIPROGRAM_CONFIG.appSecret}&js_code=${code}&grant_type=authorization_code`
+
+    const response = await fetch(wxUrl)
+    const data = await response.json()
+
+    console.log('[MiniLogin] 微信接口返回:', {
+      errcode: data.errcode,
+      errmsg: data.errmsg,
+      hasOpenId: !!data.openid,
+    })
+
+    if (data.errcode) {
+      return NextResponse.json({
+        success: false,
+        error: `微信登录失败: ${data.errmsg || data.errcode}`
+      }, { status: 400 })
+    }
+
+    const openId = data.openid
+    const sessionKey = data.session_key
+    const unionId = data.unionid
+
+    if (!openId) {
+      return NextResponse.json({
+        success: false,
+        error: '获取openId失败'
+      }, { status: 500 })
+    }
+
+    // 创建或更新用户
+    // TODO: 这里应该连接数据库操作
+    const user = {
+      id: `user_${openId.slice(-8)}`,
+      openId,
+      nickname: '微信用户',
+      avatar: '',
+      referralCode: 'SOUL' + Date.now().toString(36).toUpperCase().slice(-6),
+      purchasedSections: [],
+      hasFullBook: false,
+      earnings: 0,
+      pendingEarnings: 0,
+      referralCount: 0,
+      createdAt: new Date().toISOString()
+    }
+
+    // 生成token
+    const token = `tk_${openId.slice(-8)}_${Date.now()}`
+
+    console.log('[MiniLogin] 登录成功, userId:', user.id)
+
+    return NextResponse.json({
+      success: true,
+      data: {
+        openId,
+        sessionKey, // 注意：生产环境不应返回sessionKey给前端
+        unionId,
+        user,
+        token,
+      }
+    })
+
+  } catch (error) {
+    console.error('[MiniLogin] 登录失败:', error)
+    return NextResponse.json({
+      success: false,
+      error: '登录失败'
+    }, { status: 500 })
+  }
+}

app/api/miniprogram/pay/notify/route.ts

@@ -0,0 +1,141 @@
+/**
+ * 小程序支付回调通知处理
+ * 微信支付成功后会调用此接口
+ */
+
+import { NextResponse } from 'next/server'
+import crypto from 'crypto'
+
+const WECHAT_PAY_CONFIG = {
+  appId: 'wxb8bbb2b10dec74aa',
+  mchId: '1318592501',
+  mchKey: 'wx3e31b068be59ddc131b068be59ddc2',
+}
+
+// 生成签名
+function generateSign(params: Record<string, string>, key: string): string {
+  const sortedKeys = Object.keys(params).sort()
+  const signString = sortedKeys
+    .filter((k) => params[k] && k !== 'sign')
+    .map((k) => `${k}=${params[k]}`)
+    .join('&')
+
+  const signWithKey = `${signString}&key=${key}`
+  return crypto.createHash('md5').update(signWithKey, 'utf8').digest('hex').toUpperCase()
+}
+
+// 验证签名
+function verifySign(params: Record<string, string>, key: string): boolean {
+  const receivedSign = params.sign
+  if (!receivedSign) return false
+
+  const data = { ...params }
+  delete data.sign
+
+  const calculatedSign = generateSign(data, key)
+  return receivedSign === calculatedSign
+}
+
+// XML转对象
+function xmlToDict(xml: string): Record<string, string> {
+  const result: Record<string, string> = {}
+  const regex = /<(\w+)><!\[CDATA\[(.*?)\]\]><\/\1>/g
+  let match
+  while ((match = regex.exec(xml)) !== null) {
+    result[match[1]] = match[2]
+  }
+  const simpleRegex = /<(\w+)>([^<]*)<\/\1>/g
+  while ((match = simpleRegex.exec(xml)) !== null) {
+    if (!result[match[1]]) {
+      result[match[1]] = match[2]
+    }
+  }
+  return result
+}
+
+// 成功响应
+const SUCCESS_RESPONSE = `<xml>
+  <return_code><![CDATA[SUCCESS]]></return_code>
+  <return_msg><![CDATA[OK]]></return_msg>
+</xml>`
+
+// 失败响应
+const FAIL_RESPONSE = `<xml>
+  <return_code><![CDATA[FAIL]]></return_code>
+  <return_msg><![CDATA[ERROR]]></return_msg>
+</xml>`
+
+/**
+ * POST - 接收微信支付回调
+ */
+export async function POST(request: Request) {
+  try {
+    const xmlData = await request.text()
+    console.log('[PayNotify] 收到支付回调')
+
+    const data = xmlToDict(xmlData)
+
+    // 验证签名
+    if (!verifySign(data, WECHAT_PAY_CONFIG.mchKey)) {
+      console.error('[PayNotify] 签名验证失败')
+      return new Response(FAIL_RESPONSE, {
+        headers: { 'Content-Type': 'application/xml' }
+      })
+    }
+
+    // 检查支付结果
+    if (data.return_code !== 'SUCCESS' || data.result_code !== 'SUCCESS') {
+      console.log('[PayNotify] 支付未成功:', data.err_code, data.err_code_des)
+      return new Response(SUCCESS_RESPONSE, {
+        headers: { 'Content-Type': 'application/xml' }
+      })
+    }
+
+    const orderSn = data.out_trade_no
+    const transactionId = data.transaction_id
+    const totalFee = parseInt(data.total_fee || '0', 10)
+    const openId = data.openid
+
+    console.log('[PayNotify] 支付成功:', {
+      orderSn,
+      transactionId,
+      totalFee,
+      openId: openId?.slice(0, 10) + '...',
+    })
+
+    // 解析附加数据
+    let attach: Record<string, string> = {}
+    if (data.attach) {
+      try {
+        attach = JSON.parse(data.attach)
+      } catch (e) {
+        // 忽略解析错误
+      }
+    }
+
+    const { productType, productId, userId } = attach
+
+    // TODO: 这里应该更新数据库中的订单状态
+    // 1. 更新订单状态为已支付
+    // 2. 如果是章节购买，将章节添加到用户已购列表
+    // 3. 如果是全书购买，更新用户为全书用户
+    
+    console.log('[PayNotify] 订单处理完成:', {
+      orderSn,
+      productType,
+      productId,
+      userId,
+    })
+
+    // 返回成功响应给微信
+    return new Response(SUCCESS_RESPONSE, {
+      headers: { 'Content-Type': 'application/xml' }
+    })
+
+  } catch (error) {
+    console.error('[PayNotify] 处理回调失败:', error)
+    return new Response(FAIL_RESPONSE, {
+      headers: { 'Content-Type': 'application/xml' }
+    })
+  }
+}

app/api/miniprogram/pay/route.ts

@@ -0,0 +1,279 @@
+/**
+ * 小程序支付API
+ * 对接真实微信支付接口
+ * 
+ * 配置来源: 用户规则
+ * - 小程序AppID: wxb8bbb2b10dec74aa
+ * - 商户号: 1318592501
+ * - API密钥: wx3e31b068be59ddc131b068be59ddc2
+ */
+
+import { NextResponse } from 'next/server'
+import crypto from 'crypto'
+
+// 微信支付配置
+const WECHAT_PAY_CONFIG = {
+  appId: 'wxb8bbb2b10dec74aa',        // 小程序AppID
+  appSecret: '85d3fa31584d06acdb1de4a597d25b7b', // 小程序AppSecret
+  mchId: '1318592501',                 // 商户号
+  mchKey: 'wx3e31b068be59ddc131b068be59ddc2', // API密钥
+  notifyUrl: 'https://soul.cunbao.net/api/miniprogram/pay/notify', // 支付回调地址
+}
+
+// 生成随机字符串
+function generateNonceStr(): string {
+  return crypto.randomBytes(16).toString('hex')
+}
+
+// 生成签名
+function generateSign(params: Record<string, string>, key: string): string {
+  const sortedKeys = Object.keys(params).sort()
+  const signString = sortedKeys
+    .filter((k) => params[k] && k !== 'sign')
+    .map((k) => `${k}=${params[k]}`)
+    .join('&')
+
+  const signWithKey = `${signString}&key=${key}`
+  return crypto.createHash('md5').update(signWithKey, 'utf8').digest('hex').toUpperCase()
+}
+
+// 对象转XML
+function dictToXml(data: Record<string, string>): string {
+  const xml = ['<xml>']
+  for (const [key, value] of Object.entries(data)) {
+    xml.push(`<${key}><![CDATA[${value}]]></${key}>`)
+  }
+  xml.push('</xml>')
+  return xml.join('')
+}
+
+// XML转对象
+function xmlToDict(xml: string): Record<string, string> {
+  const result: Record<string, string> = {}
+  const regex = /<(\w+)><!\[CDATA\[(.*?)\]\]><\/\1>/g
+  let match
+  while ((match = regex.exec(xml)) !== null) {
+    result[match[1]] = match[2]
+  }
+  const simpleRegex = /<(\w+)>([^<]*)<\/\1>/g
+  while ((match = simpleRegex.exec(xml)) !== null) {
+    if (!result[match[1]]) {
+      result[match[1]] = match[2]
+    }
+  }
+  return result
+}
+
+// 生成订单号
+function generateOrderSn(): string {
+  const now = new Date()
+  const timestamp = now.getFullYear().toString() +
+    (now.getMonth() + 1).toString().padStart(2, '0') +
+    now.getDate().toString().padStart(2, '0') +
+    now.getHours().toString().padStart(2, '0') +
+    now.getMinutes().toString().padStart(2, '0') +
+    now.getSeconds().toString().padStart(2, '0')
+  const random = Math.floor(Math.random() * 1000000).toString().padStart(6, '0')
+  return `MP${timestamp}${random}`
+}
+
+/**
+ * POST - 创建小程序支付订单
+ */
+export async function POST(request: Request) {
+  try {
+    const body = await request.json()
+    const { openId, productType, productId, amount, description } = body
+
+    if (!openId) {
+      return NextResponse.json({
+        success: false,
+        error: '缺少openId参数，请先登录'
+      }, { status: 400 })
+    }
+
+    if (!amount || amount <= 0) {
+      return NextResponse.json({
+        success: false,
+        error: '支付金额无效'
+      }, { status: 400 })
+    }
+
+    const orderSn = generateOrderSn()
+    const totalFee = Math.round(amount * 100) // 转换为分
+    const goodsBody = description || (productType === 'fullbook' ? '《一场Soul的创业实验》全书' : `章节购买-${productId}`)
+
+    // 获取客户端IP
+    const forwarded = request.headers.get('x-forwarded-for')
+    const clientIp = forwarded ? forwarded.split(',')[0] : '127.0.0.1'
+
+    // 构建统一下单参数
+    const params: Record<string, string> = {
+      appid: WECHAT_PAY_CONFIG.appId,
+      mch_id: WECHAT_PAY_CONFIG.mchId,
+      nonce_str: generateNonceStr(),
+      body: goodsBody.slice(0, 128),
+      out_trade_no: orderSn,
+      total_fee: totalFee.toString(),
+      spbill_create_ip: clientIp,
+      notify_url: WECHAT_PAY_CONFIG.notifyUrl,
+      trade_type: 'JSAPI',
+      openid: openId,
+      attach: JSON.stringify({ productType, productId, userId: body.userId || '' }),
+    }
+
+    // 生成签名
+    params.sign = generateSign(params, WECHAT_PAY_CONFIG.mchKey)
+
+    console.log('[MiniPay] 创建订单:', {
+      orderSn,
+      totalFee,
+      openId: openId.slice(0, 10) + '...',
+      productType,
+      productId,
+    })
+
+    // 调用微信统一下单接口
+    const xmlData = dictToXml(params)
+    const response = await fetch('https://api.mch.weixin.qq.com/pay/unifiedorder', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/xml' },
+      body: xmlData,
+    })
+
+    const responseText = await response.text()
+    const result = xmlToDict(responseText)
+
+    console.log('[MiniPay] 微信响应:', {
+      return_code: result.return_code,
+      result_code: result.result_code,
+      err_code: result.err_code,
+      err_code_des: result.err_code_des,
+    })
+
+    // 检查返回结果
+    if (result.return_code !== 'SUCCESS') {
+      return NextResponse.json({
+        success: false,
+        error: `微信支付请求失败: ${result.return_msg || '未知错误'}`
+      }, { status: 500 })
+    }
+
+    if (result.result_code !== 'SUCCESS') {
+      return NextResponse.json({
+        success: false,
+        error: `微信支付失败: ${result.err_code_des || result.err_code || '未知错误'}`
+      }, { status: 500 })
+    }
+
+    // 构建小程序支付参数
+    const prepayId = result.prepay_id
+    if (!prepayId) {
+      return NextResponse.json({
+        success: false,
+        error: '微信支付返回数据异常'
+      }, { status: 500 })
+    }
+
+    const timestamp = Math.floor(Date.now() / 1000).toString()
+    const nonceStr = generateNonceStr()
+
+    const payParams: Record<string, string> = {
+      appId: WECHAT_PAY_CONFIG.appId,
+      timeStamp: timestamp,
+      nonceStr,
+      package: `prepay_id=${prepayId}`,
+      signType: 'MD5',
+    }
+    payParams.paySign = generateSign(payParams, WECHAT_PAY_CONFIG.mchKey)
+
+    console.log('[MiniPay] 支付参数生成成功:', { orderSn, prepayId: prepayId.slice(0, 20) + '...' })
+
+    return NextResponse.json({
+      success: true,
+      data: {
+        orderSn,
+        prepayId,
+        payParams: {
+          timeStamp: timestamp,
+          nonceStr,
+          package: `prepay_id=${prepayId}`,
+          signType: 'MD5',
+          paySign: payParams.paySign,
+        }
+      }
+    })
+
+  } catch (error) {
+    console.error('[MiniPay] 创建订单失败:', error)
+    return NextResponse.json({
+      success: false,
+      error: '创建支付订单失败'
+    }, { status: 500 })
+  }
+}
+
+/**
+ * GET - 查询订单状态
+ */
+export async function GET(request: Request) {
+  const { searchParams } = new URL(request.url)
+  const orderSn = searchParams.get('orderSn')
+
+  if (!orderSn) {
+    return NextResponse.json({
+      success: false,
+      error: '缺少订单号'
+    }, { status: 400 })
+  }
+
+  try {
+    const params: Record<string, string> = {
+      appid: WECHAT_PAY_CONFIG.appId,
+      mch_id: WECHAT_PAY_CONFIG.mchId,
+      out_trade_no: orderSn,
+      nonce_str: generateNonceStr(),
+    }
+    params.sign = generateSign(params, WECHAT_PAY_CONFIG.mchKey)
+
+    const xmlData = dictToXml(params)
+    const response = await fetch('https://api.mch.weixin.qq.com/pay/orderquery', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/xml' },
+      body: xmlData,
+    })
+
+    const responseText = await response.text()
+    const result = xmlToDict(responseText)
+
+    if (result.return_code !== 'SUCCESS' || result.result_code !== 'SUCCESS') {
+      return NextResponse.json({
+        success: true,
+        data: { status: 'unknown', orderSn }
+      })
+    }
+
+    const tradeState = result.trade_state
+    let status = 'paying'
+    if (tradeState === 'SUCCESS') status = 'paid'
+    else if (['CLOSED', 'REVOKED', 'PAYERROR'].includes(tradeState)) status = 'failed'
+    else if (tradeState === 'REFUND') status = 'refunded'
+
+    return NextResponse.json({
+      success: true,
+      data: {
+        status,
+        orderSn,
+        transactionId: result.transaction_id,
+        totalFee: parseInt(result.total_fee || '0', 10),
+      }
+    })
+
+  } catch (error) {
+    console.error('[MiniPay] 查询订单失败:', error)
+    return NextResponse.json({
+      success: false,
+      error: '查询订单失败'
+    }, { status: 500 })
+  }
+}

miniprogram/app.js

@@ -6,10 +6,14 @@
 App({
   globalData: {
     // API基础地址
-    baseUrl: 'https://soul.ckb.fit',
+    baseUrl: 'https://soul.cunbao.net',
+    
+    // 小程序配置
+    appId: 'wxb8bbb2b10dec74aa',
     
     // 用户信息
     userInfo: null,
+    openId: null,  // 微信openId，支付必需
     isLoggedIn: false,
     
     // 书籍数据
@@ -170,7 +174,7 @@ App({
     })
   },
 
-  // 登录方法 - 支持模拟登录回退
+  // 登录方法 - 获取openId用于支付
   async login() {
     try {
       // 获取微信登录code
@@ -181,38 +185,81 @@ App({
         })
       })
       
+      console.log('[App] 获取登录code成功')
+      
       try {
-        // 尝试发送code到服务器
-        const res = await this.request('/api/wechat/login', {
+        // 发送code到服务器获取openId
+        const res = await this.request('/api/miniprogram/login', {
           method: 'POST',
           data: { code: loginRes.code }
         })
         
         if (res.success && res.data) {
+          // 保存openId
+          if (res.data.openId) {
+            this.globalData.openId = res.data.openId
+            wx.setStorageSync('openId', res.data.openId)
+            console.log('[App] 获取openId成功')
+          }
+          
           // 保存用户信息
+          if (res.data.user) {
             this.globalData.userInfo = res.data.user
             this.globalData.isLoggedIn = true
             this.globalData.purchasedSections = res.data.user.purchasedSections || []
             this.globalData.hasFullBook = res.data.user.hasFullBook || false
             
             wx.setStorageSync('userInfo', res.data.user)
-          wx.setStorageSync('token', res.data.token)
+            wx.setStorageSync('token', res.data.token || '')
+          }
           
           return res.data
         }
       } catch (apiError) {
-        console.log('API登录失败，使用模拟登录:', apiError)
+        console.log('[App] API登录失败，使用模拟登录:', apiError.message)
       }
       
       // API不可用时使用模拟登录
       return this.mockLogin()
     } catch (e) {
-      console.error('登录失败:', e)
+      console.error('[App] 登录失败:', e)
       // 最后尝试模拟登录
       return this.mockLogin()
     }
   },
   
+  // 获取openId (支付必需)
+  async getOpenId() {
+    // 先检查缓存
+    const cachedOpenId = wx.getStorageSync('openId')
+    if (cachedOpenId) {
+      this.globalData.openId = cachedOpenId
+      return cachedOpenId
+    }
+    
+    // 没有缓存则登录获取
+    try {
+      const loginRes = await new Promise((resolve, reject) => {
+        wx.login({ success: resolve, fail: reject })
+      })
+      
+      const res = await this.request('/api/miniprogram/login', {
+        method: 'POST',
+        data: { code: loginRes.code }
+      })
+      
+      if (res.success && res.data?.openId) {
+        this.globalData.openId = res.data.openId
+        wx.setStorageSync('openId', res.data.openId)
+        return res.data.openId
+      }
+    } catch (e) {
+      console.error('[App] 获取openId失败:', e)
+    }
+    
+    return null
+  },
+
   // 模拟登录（后端不可用时使用）
   mockLogin() {
     const mockUser = {

miniprogram/pages/read/read.js

@@ -361,65 +361,96 @@ ${id === 'preface' || id === 'epilogue' || id.startsWith('appendix') || id === '
     await this.processPayment('fullbook', null, this.data.fullBookPrice)
   },
 
-  // 处理支付
+  // 处理支付 - 调用真实微信支付接口
   async processPayment(type, sectionId, amount) {
     this.setData({ isPaying: true })
     
     try {
-      // 创建订单
+      // 1. 先获取openId (支付必需)
+      let openId = app.globalData.openId || wx.getStorageSync('openId')
+      
+      if (!openId) {
+        console.log('[Pay] 需要先获取openId')
+        openId = await app.getOpenId()
+        
+        if (!openId) {
+          wx.showModal({
+            title: '提示',
+            content: '需要登录后才能支付，请先登录',
+            showCancel: false
+          })
+          this.setData({ showLoginModal: true, isPaying: false })
+          return
+        }
+      }
+      
+      console.log('[Pay] 开始创建订单:', { type, sectionId, amount, openId: openId.slice(0, 10) + '...' })
+      
+      // 2. 调用后端创建预支付订单
       let paymentData = null
       
       try {
-        const res = await app.request('/api/payment/create-order', {
+        const res = await app.request('/api/miniprogram/pay', {
           method: 'POST',
-          data: { type, sectionId, amount }
+          data: {
+            openId,
+            productType: type,
+            productId: sectionId,
+            amount,
+            description: type === 'fullbook' ? '《一场Soul的创业实验》全书' : `章节-${sectionId}`,
+            userId: app.globalData.userInfo?.id || ''
+          }
         })
         
-        if (res.success && res.data) {
-          paymentData = res.data
+        console.log('[Pay] 创建订单响应:', res)
+        
+        if (res.success && res.data?.payParams) {
+          paymentData = res.data.payParams
+          console.log('[Pay] 获取支付参数成功')
+        } else {
+          throw new Error(res.error || '创建订单失败')
         }
       } catch (apiError) {
-        console.log('API创建订单失败，使用模拟支付')
-      }
+        console.log('[Pay] API创建订单失败:', apiError.message)
         
-      // 如果API不可用，使用模拟支付
-      if (!paymentData) {
-        paymentData = {
-          isMock: true,
-          orderId: 'mock_' + Date.now()
-        }
-      }
-      
-      // 调用微信支付或模拟支付
-      if (paymentData.isMock) {
-        // 模拟支付确认
-        const confirmRes = await new Promise((resolve) => {
+        // 开发环境：API不可用时使用模拟支付
+        const useMock = await new Promise((resolve) => {
           wx.showModal({
-            title: '确认支付',
-            content: `支付 ¥${amount} 购买${type === 'section' ? '本章' : '全书'}？\n（测试环境模拟支付）`,
+            title: '支付服务暂不可用',
+            content: '是否使用测试模式完成购买？',
+            confirmText: '测试购买',
+            cancelText: '取消',
             success: (res) => resolve(res.confirm)
           })
         })
         
-        if (confirmRes) {
-          // 模拟支付成功，更新本地数据
+        if (useMock) {
           this.mockPaymentSuccess(type, sectionId)
-          wx.showToast({ title: '购买成功', icon: 'success' })
+          wx.showToast({ title: '测试购买成功', icon: 'success' })
+          this.initSection(this.data.sectionId)
         }
-      } else {
-        // 真实微信支付
-        await this.callWechatPay(paymentData)
-        wx.showToast({ title: '购买成功', icon: 'success' })
+        this.setData({ isPaying: false })
+        return
       }
       
-      // 刷新页面
+      // 3. 调用微信支付
+      console.log('[Pay] 调起微信支付')
+      await this.callWechatPay(paymentData)
+      
+      // 4. 支付成功，更新本地数据
+      this.mockPaymentSuccess(type, sectionId)
+      wx.showToast({ title: '购买成功', icon: 'success' })
+      
+      // 5. 刷新页面
       this.initSection(this.data.sectionId)
       
     } catch (e) {
+      console.error('[Pay] 支付失败:', e)
+      
       if (e.errMsg && e.errMsg.includes('cancel')) {
         wx.showToast({ title: '已取消支付', icon: 'none' })
       } else {
-        wx.showToast({ title: '支付失败', icon: 'none' })
+        wx.showToast({ title: e.errMsg || '支付失败', icon: 'none' })
       }
     } finally {
       this.setData({ isPaying: false })