首先这里硬编码的session_key和open_id是由客户端发出请求，得到code，然后后端通过接口调用得到的openid和对应desession_key. var appsecret = "1234567890xxxxxxxxxxx"; var session_key = "1234567890xxxxxxxxxxx"; var openid ="1234567890xxxxxxxxxxx"; var appid = "1234567890xxxxxxxxxxx"; var offer_id ="1234567890xxxxxxxxxxx"; var ts = parseInt(Date.now()/1000); var zone_id = "1"; var pf =  "android"; var amt = 10; var bill_no = "angus123"; var misecret = "1234567890xxxxxxxxxxx";  // 米大师密钥 var apiUrl = "/cgi-bin/midas/sandbox/pay?access_token="; var sig; var mp_sig; function makeSig(amt, appid, bill_no, offer_id, openid, pf, ts, zone_id, access_token, session_key) { console.log('-----------------begin to makeSig ---------------\n'); var stringA = "" stringA += "amt=" + amt + "&"; stringA += "appid=" + appid + "&"; stringA += "bill_no=" + bill_no + "&"; stringA += "offer_id=" + offer_id + "&"; stringA += "openid=" + openid + "&"; stringA += "pf=" + pf + "&"; stringA += "ts=" + ts + "&"; stringA += "zone_id=" + zone_id; console.log("---------stringA is:\n" + stringA); var stringSignTemp = stringA + "&org_loc="+ apiUrl + access_token + "&method=POST&secret=" + misecret; console.log("---------stringSignTemp is :\n" + stringSignTemp); var signer = cryptImp.createHmac('sha256', misecret); sig = signer.update(stringSignTemp).digest('hex'); console.log("---------sig is:\n" + sig); //----------------------------------------------------- var stringB = "access_token=" + access_token + "&"; stringB += "amt=" + amt + "&"; stringB += "appid=" + appid + "&"; stringB += "bill_no=" + bill_no + "&"; stringB += "offer_id=" + offer_id + "&"; stringB += "openid=" + openid + "&"; stringB += "pf=" + pf + "&"; stringB += "sig=" + sig + "&"; stringB += "ts=" + ts + "&"; stringB += "zone_id=" + zone_id; console.log("-----------stringB is:\n" + stringB); var stringSignTempB = stringB + "&org_loc=" + apiUrl + access_token + "&method=POST&session_key=" + session_key; console.log("-----------stringSignTempB is:\n" + stringSignTempB); var signer2 = cryptImp.createHmac('sha256', session_key); mp_sig = signer2.update(stringSignTempB).digest('hex'); console.log("-----------mp_sig is :" + mp_sig); }; const get_access_token_options = { hostname: 'api.weixin.qq.com', port: 443, path: '/cgi-bin/token?grant_type=client_credential&appid='+appid+'&secret='+appsecret, method: 'GET' }; const req = https.request(get_access_token_options, function (res) { res.on('data', function (d) { var access_token = JSON.parse(d).access_token;  /*这里得到access_token*/ console.log("----------the access_token is : \n" + access_token); { makeSig(amt, appid, bill_no, offer_id, openid, pf, ts, zone_id, access_token, session_key); post_sandbox_body = JSON.stringify({ "access_token": access_token, "amt": amt, "appid": appid, "bill_no": bill_no, "offer_id": offer_id, "openid": openid, "pf": pf, "ts": ts, "zone_id": zone_id, "sig": sig, "mp_sig": mp_sig }); const post_sandbox_options = { hostname: 'api.weixin.qq.com', port: 443, path: '/cgi-bin/midas/sandbox/pay?access_token=' + access_token, method: 'POST', headers: { 'Content-Type':'application/octet-stream',/* 使用application/json也出错 */ 'Content-Length':Buffer.byteLength(post_sandbox_body), } }; console.log("---------post_sandbox_options is:"+JSON.stringify(post_sandbox_options)); console.log("---------post_sandbox_body is :"+ post_sandbox_body); console.log("---------post_path is:" + post_sandbox_options.path); var post_req = https.request(post_sandbox_options,function(res){ //res.setEncoding('utf8'); var _data=""; res.on('data',function(thunk){ _data+=thunk; }); res.on('end',function(){ console.log(JSON.parse(_data)); }); }); post_req.write(post_sandbox_body); post_req.end(); } }); }); req.on('error', function (e) { console.error(e); }); req.end(); 返回错误： { errcode: 90009,   errmsg: 'mp_sig error hint: [d5I4Fa05393037]' } 请官方或者各路大神帮忙看看，是否由问题。 项目马上要收费了，迫在眉睫啊。 跪求，谢谢！

米大师支付接入，沙箱环境已发布，应用状态：联调中 wx.requestMidasPayment({         mode: "game",         env: 1,         offerId: "XXXXXXXyyyyyy",         currencyType: "CNY",         platform : "android",         buyQuantity: 10,         zoneId : "1",         success: (res) => {             console.log(res);         },         fail: (res) => {             console.log(res);         } }); 返回： {     errCode: 1016,     errMsg: "requestMidasPayment:fail 系统繁忙，请稍后再试" }