如何搭建简单的微信小程序收款

// 前端代码示例
wx.request({
  url: 'https://your-server.com/pay', // 后端支付接口地址
  method: 'POST',
  data: {
    amount: 100, // 支付金额，单位为分
    description: '商品描述'
  },
  success: function(res) {
    const payData = res.data;
    wx.requestPayment({
      timeStamp: payData.timeStamp,
      nonceStr: payData.nonceStr,
      package: payData.package,
      signType: payData.signType,
      paySign: payData.paySign,
      success: function(res) {
        console.log('支付成功');
      },
      fail: function(res) {
        console.log('支付失败', res);
      }
    });
  }
});

# 后端代码示例（Python）
import requests
import hashlib
import time

def generate_sign(params, api_key):
    sorted_items = sorted(params.items())
    sign_str = '&'.join([f'{k}={v}' for k, v in sorted_items]) + f'&key={api_key}'
    return hashlib.md5(sign_str.encode('utf-8')).hexdigest().upper()

def create_pay_order(amount, description, openid):
    url = 'https://api.weixin.qq.com/pay/unifiedorder'
    params = {
        'appid': 'your_appid',
        'mch_id': 'your_mch_id',
        'nonce_str': hashlib.md5(str(time.time()).encode('utf-8')).hexdigest(),
        'body': description,
        'out_trade_no': 'your_order_number',
        'total_fee': amount,
        'spbill_create_ip': 'your_server_ip',
        'notify_url': 'your_notify_url',
        'trade_type': 'JSAPI',
        'openid': openid
    }
    params['sign'] = generate_sign(params, 'your_api_key')
    response = requests.post(url, data=params)
    return response.json()

# 示例调用
order_data = create_pay_order(100, '商品描述', 'user_openid')
prepay_id = order_data['prepay_id']
# 生成前端需要的支付参数并返回