我已经在网络上注册了一个成员，但是当尝试使用成员凭据登录时，出现此错误：
（节点：8931）UnhandledPromiseRejectionWarning：错误[ERR_HTTP_HEADERS_SENT]：将标头发送到客户端后无法设置标头 在ServerResponse.setHeader（_http_outgoing.js：481：11） 在ServerResponse.header（/home/pavansoratur/Desktop/lpbc-changes/web-app/node_modules/express/lib/response.js:767:10） 在ServerResponse.send（/home/pavansoratur/Desktop/lpbc-changes/web-app/node_modules/express/lib/response.js:170:12） 在ServerResponse.json（/home/pavansoratur/Desktop/lpbc-changes/web-app/node_modules/express/lib/response.js:267:15） 在network.allMembersInfo.then（/home/pavansoratur/Desktop/lpbc-changes/web-app/app.js:418:65） （节点：8931）UnhandledPromiseRejectionWarning：未处理的承诺拒绝。引发此错误的原因可能是抛出了一个没有catch块的异步函数，或者是拒绝了一个.catch（）无法处理的承诺。 （拒绝ID：2） （节点：8931）[DEP0018] DeprecationWarning：已弃用未处理的承诺拒绝。将来，未处理的承诺拒绝将以非零退出代码终止Node.js进程。
这是我的app.js代码：
//get libraries
const express = require('express');
const bodyParser = require('body-parser');
const request = require('request');
const path = require('path')
//create express web-app
const app = express();
const router = express.Router();
//get the libraries to call
var network = require('./network/network.js');
var validate = require('./network/validate.js');
var analysis = require('./network/analysis.js');
//bootstrap application settings
app.use(express.static('./public'));
app.use('/scripts', express.static(path.join(__dirname, '/public/scripts')));
app.use(bodyParser.json());
//get home page
app.get('/home', function(req, res) {
res.sendFile(path.join(__dirname + '/public/index.html'));
});
//get member page
app.get('/member', function(req, res) {
res.sendFile(path.join(__dirname + '/public/member.html'));
});
//get member registration page
app.get('/registerMember', function(req, res) {
res.sendFile(path.join(__dirname + '/public/registerMember.html'));
});
//get partner page
app.get('/partner', function(req, res) {
res.sendFile(path.join(__dirname + '/public/partner.html'));
});
//get partner registration page
app.get('/registerPartner', function(req, res) {
res.sendFile(path.join(__dirname + '/public/registerPartner.html'));
});
//get about page
app.get('/about', function(req, res) {
res.sendFile(path.join(__dirname + '/public/about.html'));
});
//post call to register member on the network
app.post('/api/registerMember', function(req, res) {
//declare variables to retrieve from request
var accountNumber = req.body.accountnumber;
var cardId = req.body.cardid;
var firstName = req.body.firstname;
var lastName = req.body.lastname;
var email = req.body.email;
var phoneNumber = req.body.phonenumber;
//print variables
console.log('Using param - firstname: ' + firstName + ' lastname: ' + lastName + ' email: ' + email + ' phonenumber: ' + phoneNumber + ' accountNumber: ' + accountNumber + ' cardId: ' + cardId);
//validate member registration fields
validate.validateMemberRegistration(cardId, accountNumber, firstName, lastName, email, phoneNumber)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
return;
} else {
//else register member on the network
network.registerMember(cardId, accountNumber, firstName, lastName, email, phoneNumber)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
} else {
//else return success
res.json({
success: response
});
}
});
}
});
});
//post call to register partner on the network
app.post('/api/registerPartner', function(req, res) {
//declare variables to retrieve from request
var name = req.body.name;
var partnerId = req.body.partnerid;
var cardId = req.body.cardid;
//print variables
console.log('Using param - name: ' + name + ' partnerId: ' + partnerId + ' cardId: ' + cardId);
//validate partner registration fields
validate.validatePartnerRegistration(cardId, partnerId, name)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
return;
} else {
//else register partner on the network
network.registerPartner(cardId, partnerId, name)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
} else {
//else return success
res.json({
success: response
});
}
});
}
});
});
//post call to perform EarnPoints transaction on the network
app.post('/api/earnPoints', function(req, res) {
//declare variables to retrieve from request
var accountNumber = req.body.accountnumber;
var cardId = req.body.cardid;
var partnerId = req.body.partnerid;
var points = parseFloat(req.body.points);
//print variables
console.log('Using param - points: ' + points + ' partnerId: ' + partnerId + ' accountNumber: ' + accountNumber + ' cardId: ' + cardId);
//validate points field
validate.validatePoints(points)
.then((checkPoints) => {
//return error if error in response
if (checkPoints.error != null) {
res.json({
error: checkPoints.error
});
return;
} else {
points = checkPoints;
//else perforn EarnPoints transaction on the network
network.earnPointsTransaction(cardId, accountNumber, partnerId, points)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
} else {
//else return success
res.json({
success: response
});
}
});
}
});
});
//post call to perform UsePoints transaction on the network
app.post('/api/usePoints', function(req, res) {
//declare variables to retrieve from request
var accountNumber = req.body.accountnumber;
var cardId = req.body.cardid;
var partnerId = req.body.partnerid;
var points = parseFloat(req.body.points);
//print variables
console.log('Using param - points: ' + points + ' partnerId: ' + partnerId + ' accountNumber: ' + accountNumber + ' cardId: ' + cardId);
//validate points field
validate.validatePoints(points)
//return error if error in response
.then((checkPoints) => {
if (checkPoints.error != null) {
res.json({
error: checkPoints.error
});
return;
} else {
points = checkPoints;
//else perforn UsePoints transaction on the network
network.usePointsTransaction(cardId, accountNumber, partnerId, points)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
} else {
//else return success
res.json({
success: response
});
}
});
}
});
});
//post call to perform SendPoints transaction on the network
app.post('/api/sendPoints', function(req, res) {
//declare variables to retrieve from request
var accountNumber = req.body.accountnumber;
var cardId = req.body.cardid;
var phoneNumber = req.body.phoneNumber;
var points = parseFloat(req.body.points);
//print variables
console.log('Using param - points: ' + points + ' phoneNumber: ' + phoneNumber + ' accountNumber: ' + accountNumber + ' cardId: ' + cardId);
//validate points field
validate.validatePoints(points)
//return error if error in response
.then((checkPoints) => {
if (checkPoints.error != null) {
res.json({
error: checkPoints.error
});
return;
} else {
points = checkPoints;
//else perforn SendPoints transaction on the network
network.sendPointsTransaction(cardId, accountNumber, phoneNumber, points)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
} else {
//else return success
res.json({
success: response
});
}
});
}
});
});
//post call to perform GetPoints transaction on the network
app.post('/api/getPoints', function(req, res) {
//declare variables to retrieve from request
var accountNumber = req.body.accountnumber;
var cardId = req.body.cardid;
var phoneNumber = req.body.phoneNumber;
var points = parseFloat(req.body.points);
//print variables
console.log('Using param - points: ' + points + ' phoneNumber: ' + phoneNumber + ' accountNumber: ' + accountNumber + ' cardId: ' + cardId);
//validate points field
validate.validatePoints(points)
//return error if error in response
.then((checkPoints) => {
if (checkPoints.error != null) {
res.json({
error: checkPoints.error
});
return;
} else {
points = checkPoints;
//else perforn SendPoints transaction on the network
network.getPointsTransaction(cardId, accountNumber, phoneNumber, points)
.then((response) => {
//return error if error in response
if (response.error != null) {
res.json({
error: response.error
});
} else {
//else return success
res.json({
success: response
});
}
});
}
});
});
//post call to retrieve member data, transactions data and partners to perform transactions with from the network
app.post('/api/memberData', function (req, res) {
//declare variables to retrieve from request
var accountNumber = req.body.accountnumber;
var cardId = req.body.cardid;
//print variables
console.log('memberData using param - ' + ' accountNumber: ' + accountNumber + ' cardId: ' + cardId);
//declare return object
var returnData = {};
//get member data from network
network.memberData(cardId, accountNumber)
.then((member) => {
//return error if error in response
if (member.error != null) {
res.json({
error: member.error
});
} else {
//else add member data to return object
returnData.accountNumber = member.accountNumber;
returnData.firstName = member.firstName;
returnData.lastName = member.lastName;
returnData.phoneNumber = member.phoneNumber;
returnData.email = member.email;
returnData.points = member.points;
}
}).then(() => {
//get UsePoints transactions from the network
network.usePointsTransactionsInfo(cardId, 'member', accountNumber)
.then((usePointsResults) => {
//return error if error in response
if (usePointsResults.error != null) {
res.json({
error: usePointsResults.error
});
} else {
//else add transaction data to return object
returnData.usePointsResults = usePointsResults;
}
}).then(() => {
//get SendPoints transactions from the network
network.sendPointsTransactionsInfo(cardId, 'member', accountNumber)
.then((sendPointsResults) => {
//return error if error in response
if (sendPointsResults.error != null) {
res.json({
error: sendPointsResults.error
});
} else {
//else add transaction data to return object
returnData.sendPointsResults = sendPointsResults;
}
}).then(() => {
//get EarnPoints transactions from the network
network.earnPointsTransactionsInfo(cardId, 'member', accountNumber)
.then((earnPointsResults) => {
//return error if error in response
if (earnPointsResults.error != null) {
res.json({
error: earnPointsResults.error
});
} else {
//else add transaction data to return object
returnData.earnPointsResult = earnPointsResults;
}
}).then(() => {
//get GetPoints transactions from the network
network.getPointsTransactionsInfo(cardId, 'member', accountNumber)
.then((getPointsResults) => {
//return error if error in response
if (getPointsResults.error != null) {
res.json({
error: getPointsResults.error
});
} else {
//else add transaction data to return object
returnData.getPointsResult = getPointsResults;
}
}).then(() => {
//get partners to transact with from the network
network.allPartnersInfo(cardId)
.then((partnersInfo) => {
//return error if error in response
if (partnersInfo.error != null) {
res.json({
error: partnersInfo.error
});
} else {
//else add partners data to return object
returnData.partnersData = partnersInfo;
}
//return returnData
res.json(returnData);
}).then(() => {
//get members to transact with from the network
network.allMembersInfo(cardId)
.then((membersInfo) => {
//return error if error in response
if (membersInfo.error != null) {
res.json({
error: membersInfo.error
});
} else {
//else add members data to return object
returnData.membersData = membersInfo;
}
//return returnData
res.json(returnData);
});
});
});
});
});
});
});
});
//post call to retrieve partner data and transactions data from the network
app.post('/api/partnerData', function (req, res) {
//declare variables to retrieve from request
var partnerId = req.body.partnerid;
var cardId = req.body.cardi
//print variables
console.log('partnerData using param - ' + ' partnerId: ' + partnerId + ' cardId: ' + cardId);
//declare return object
var returnData = {}
//get partner data from network
network.partnerData(cardId, partnerId)
.then((partner) => {
//return error if error in response
if (partner.error != null) {
res.json({
error: partner.error
});
} else {
//else add partner data to return object
returnData.id = partner.id;
returnData.name = partner.name;
}
}).then(() => {
//get UsePoints transactions from the network
network.usePointsTransactionsInfo(cardId, 'partner', partnerId)
.then((usePointsResults) => {
//return error if error in response
if (usePointsResults.error != null) {
res.json({
error: usePointsResults.error
});
} else {
//else add transaction data to return object
returnData.usePointsResults = usePointsResults;
//add total points collected by partner to return object
returnData.pointsCollected = analysis.totalPointsCollec(usePointsResults);
}
}).then(() => {
//get EarnPoints transactions from the network
network.earnPointsTransactionsInfo(cardId, 'partner', partnerId)
.then((earnPointsResults) => {
//return error if error in response
if (earnPointsResults.error != null) {
res.json({
error: earnPointsResults.error
});
} else {
//else add transaction data to return object
returnData.earnPointsResults = earnPointsResults;
//add total points given by partner to return object
returnData.pointsGiven = analysis.totalPointsGi(earnPointsResul);
}
//return returnData
res.json(returnData);
});
});
});
});
//declare port
var port = process.env.PORT || 5000;
// if (process.env.VCAP_APPLICATION) {
// port = process.env.PORT;
// }
//run app on port
app.listen(port, function () {
console.log(`app running on port: ${port}`);
});
我该如何解决？