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