请求接口： https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers [图片] 各个参数已经按照文档：https://pay.weixin.qq.com/wiki/doc/api/tools/mch_pay.php?chapter=14_2 仔细检查过一篇。 请求参数，敏感信息已屏蔽： [代码]<?[代码][代码]xml[代码] [代码]version[代码][代码]=[代码][代码]"1.0"[代码] [代码]encoding[代码][代码]=[代码][代码]"UTF-8"[代码] [代码]standalone[代码][代码]=[代码][代码]"no"[代码][代码]?>[代码][代码]<[代码][代码]xml[代码][代码]>[代码][代码]<[代码][代码]amount[代码][代码]>30</[代码][代码]amount[代码][代码]>[代码][代码]<[代码][代码]nonce_str[代码][代码]>**</[代码][代码]nonce_str[代码][代码]>[代码][代码]<[代码][代码]mchid[代码][代码]>**</[代码][代码]mchid[代码][代码]>[代码][代码]<[代码][代码]partner_trade_no[代码][代码]>888820190116103208693299</[代码][代码]partner_trade_no[代码][代码]>[代码][代码]<[代码][代码]openid[代码][代码]>***-1-OF0c</[代码][代码]openid[代码][代码]>[代码][代码]<[代码][代码]mch_appid[代码][代码]>**</[代码][代码]mch_appid[代码][代码]>[代码][代码]<[代码][代码]sign[代码][代码]>E26C6EC2D205D60DA9920F74DD046822</[代码][代码]sign[代码][代码]>[代码][代码]<[代码][代码]check_name[代码][代码]>NO_CHECK</[代码][代码]check_name[代码][代码]>[代码][代码]<[代码][代码]spbill_create_ip[代码][代码]>***</[代码][代码]spbill_create_ip[代码][代码]>[代码][代码]<[代码][代码]sign_type[代码][代码]>MD5</[代码][代码]sign_type[代码][代码]>[代码][代码]<[代码][代码]desc[代码][代码]>C大调祝你新春快乐!</[代码][代码]desc[代码][代码]>[代码][代码]</[代码][代码]xml[代码][代码]>[代码] 返回结果： [代码]<?[代码][代码]xml[代码] [代码]version[代码][代码]=[代码][代码]"1.0"[代码] [代码]encoding[代码][代码]=[代码][代码]"utf-8"[代码][代码]?>[代码] [代码]<[代码][代码]xml[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]return_code[代码][代码]>[代码][代码]<![CDATA[SUCCESS]]>[代码][代码]</[代码][代码]return_code[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]return_msg[代码][代码]>[代码][代码]<![CDATA[SIGN_ERROR]]>[代码][代码]</[代码][代码]return_msg[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]mch_appid[代码][代码]>[代码][代码]<![CDATA[***]]>[代码][代码]</[代码][代码]mch_appid[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]mchid[代码][代码]>[代码][代码]<![CDATA[***]]>[代码][代码]</[代码][代码]mchid[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]result_code[代码][代码]>[代码][代码]<![CDATA[FAIL]]>[代码][代码]</[代码][代码]result_code[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]err_code[代码][代码]>[代码][代码]<![CDATA[SIGN_ERROR]]>[代码][代码]</[代码][代码]err_code[代码][代码]>[代码][代码]  [代码][代码]<[代码][代码]err_code_des[代码][代码]>[代码][代码]<![CDATA[签名错误]]>[代码][代码]</[代码][代码]err_code_des[代码][代码]>[代码][代码]</[代码][代码]xml[代码][代码]>[代码] 请问哪里还需要检查的？

真机测试已通过。 小程序端： wx.cloud.callFunction({     name: 'getQRCode',     data: {         scene: 'scene',         page: 'pages/index/index',         width: 180     } }).then(res => {     let qr = "data:image/png;base64," + wx.arrayBufferToBase64(res.result) }) 云函数：getQRCode： const secret = 'your secret' const rp = require('request-promise') exports.main = async (event, context) => {     let opt = {         method: 'GET',         url: 'https://api.weixin.qq.com/cgi-bin/token',         qs: {             appid: event.userInfo.appId,             secret,             grant_type: 'client_credential'         },         json: true     }     let res = await rp(opt)     opt = {         method: 'POST',         url: 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=' + res.access_token,         body: {             'page': event.page,             'width': event.width,             'scene': event.scene         },         json: true,         encoding: null     }     return await rp(opt) }

真机测试已通过。你照抄就行，保证可通过。 最新完美版本可供参考： https://developers.weixin.qq.com/community/develop/article/doc/0004c4a50a03107eaa79f03cc56c13 小程序端： wx.cloud.callFunction({     name: 'getPay' ,     data: {         total_fee: parseFloat(0.01).toFixed(2) * 100,         attach: 'anything',         body: 'whatever'     } }) .then( res => {     wx.requestPayment({         appId: res.result.appid,         timeStamp: res.result.timeStamp,         nonceStr: res.result.nonce_str,         package: 'prepay_id=' + res.result.prepay_id,         signType: 'MD5',         paySign: res.result.paySign,         success: res => {             console.log(res)         }     }) }) 云函数：getPay getPay目录下共两个文件： 1､index.js 2､package.json index.js代码如下： const key = "YOURKEY1234YOURKEY1234YOURKEY123"//这是商户的key，不是小程序的密钥，32位。 const mch_id = "1413090000" //你的商户号 //将以上的两个参数换成你的，然后以下可以不用改一个字照抄 const rp = require('request-promise') const crypto = require('crypto') function paysign({ ...args }) {     let sa = []     for (let k in args) sa.push( k + '=' + args[k])     sa.push( 'key=' + key)     return crypto.createHash('md5').update(sa.join('&'), 'utf8').digest('hex').toUpperCase() } exports.main = async (event, context) => {     const appid = event.userInfo.appId     const openid = event.userInfo.openId     const attach = event.attach     const body = event.body     const total_fee = event.total_fee     const notify_url = "https://whatever.com/notify"     const spbill_create_ip = "118.89.40.200"     const nonce_str = Math.random().toString(36).substr(2, 15)     const timeStamp = parseInt(Date.now() / 1000) + ''     const out_trade_no = "otn" + nonce_str + timeStamp          let formData = "<xml>"     formData += "<appid>" + appid + "</appid>"     formData += "<attach>" + attach + "</attach>"     formData += "<body>" + body + "</body>"     formData += "<mch_id>" + mch_id + "</mch_id>"     formData += "<nonce_str>" + nonce_str + "</nonce_str>"     formData += "<notify_url>" + notify_url + "</notify_url>"     formData += "<openid>" + openid + "</openid>"     formData += "<out_trade_no>" + out_trade_no + "</out_trade_no>"     formData += "<spbill_create_ip>" + spbill_create_ip + "</spbill_create_ip>"     formData += "<total_fee>" + total_fee + "</total_fee>"     formData += "<trade_type>JSAPI</trade_type>"     formData += "<sign>" + paysign({ appid, attach, body, mch_id, nonce_str, notify_url, openid, out_trade_no, spbill_create_ip, total_fee, trade_type: 'JSAPI' }) + "</sign>"     formData += "</xml>"          let res = await rp({ url: "https://api.mch.weixin.qq.com/pay/unifiedorder", method: 'POST',body: formData})     let xml = res.toString("utf-8")     if (xml.indexOf('prepay_id')<0) return xml     let prepay_id = xml.split("<prepay_id>")[1].split("</prepay_id>")[0].split('[')[2].split(']')[0]     let paySign = paysign({ appId: appid, nonceStr: nonce_str, package: ('prepay_id=' + prepay_id), signType: 'MD5', timeStamp: timeStamp })     return { appid, nonce_str, timeStamp, prepay_id, paySign }  } package.json 代码如下： {     "name": "getPay",     "version": "1.0.0",     "description": "",     "main": "index.js",     "scripts": {     "test": "echo \"Error: no test specified\" && exit 1"     },     "author": "youself",     "license": "ISC",     "dependencies": {         "crypto": "^1.0.1",         "request-promise": "^4.2.2"     } } 最后选择：上传和部署：云端安装依赖。