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Я только что создал проект в NodeJS и пытаюсь выполнить запрос на публикацию с моего интерфейса (через API). Все работает нормально, запрос post успешно выполнен, все параметры отправлены, и мое приложение NodeJS получает запрос, однако тело/параметры пусты.

Вот код, который я использую:

 const http = require('http'); const express = require('express'); const cors = require('cors'); const bodyParser = require('body-parser');  const hostname = '127.0.0.1'; const port = 3000; const app = express();   const corsOptions = {  origin: 'http://localhost:4200',  allowedHeaders: ['Content-Type'] }   app.options('*', cors(corsOptions)); app.use(cors(corsOptions)); app.use(bodyParser.urlencoded({extended : true})); app.use(bodyParser.json());  app.post('/', function (req, res) {  console.log(req);  res.send('Hello World!'); })  

Приложение показывает «Привет, мир», когда я отправляю сообщение по пути по умолчанию, а также показывает всю req информацию, но параметры пусты {}

Вот мой код на стороне клиента:

 testPost(parameter1: any, parameter2: any): Observablelt;anygt; {  return this.http.post(URL_API.url,  {'parameter1': parameter1, 'parameter2': parameter2},  {headers: new HttpHeaders({'Content-Type': '*'})});  }  

Вот что я получаю в NodeJS:

 lt;ref *2gt; IncomingMessage {  _readableState: ReadableState {  objectMode: false,  highWaterMark: 16384,  buffer: BufferList { head: null, tail: null, length: 0 },  length: 0,  pipes: [],  flowing: null,  ended: false,  endEmitted: false,  reading: false,  sync: true,  needReadable: false,  emittedReadable: false,  readableListening: false,  resumeScheduled: false,  errorEmitted: false,  emitClose: true,  autoDestroy: false,  destroyed: false,  errored: null,  closed: false,  closeEmitted: false,  defaultEncoding: 'utf8',  awaitDrainWriters: null,  multiAwaitDrain: false,  readingMore: true,  decoder: null,  encoding: null,  [Symbol(kPaused)]: null  },  _events: [Object: null prototype] { end: [Function: clearRequestTimeout] },  _eventsCount: 1,  _maxListeners: undefined,  socket: lt;ref *1gt; Socket {  connecting: false,  _hadError: false,  _parent: null,  _host: null,  _readableState: ReadableState {  objectMode: false,  highWaterMark: 16384,  buffer: BufferList { head: null, tail: null, length: 0 },  length: 0,  pipes: [],  flowing: true,  ended: false,  endEmitted: false,  reading: true,  sync: false,  needReadable: true,  emittedReadable: false,  readableListening: false,  resumeScheduled: false,  errorEmitted: false,  emitClose: false,  autoDestroy: false,  destroyed: false,  errored: null,  closed: false,  closeEmitted: false,  defaultEncoding: 'utf8',  awaitDrainWriters: null,  multiAwaitDrain: false,  readingMore: false,  decoder: null,  encoding: null,  [Symbol(kPaused)]: false  },  _events: [Object: null prototype] {  end: [Array],  timeout: [Function: socketOnTimeout],  data: [Function: bound socketOnData],  error: [Function: socketOnError],  close: [Array],  drain: [Function: bound socketOnDrain],  resume: [Function: onSocketResume],  pause: [Function: onSocketPause]  },  _eventsCount: 8,  _maxListeners: undefined,  _writableState: WritableState {  objectMode: false,  highWaterMark: 16384,  finalCalled: false,  needDrain: false,  ending: false,  ended: false,  finished: false,  destroyed: false,  decodeStrings: false,  defaultEncoding: 'utf8',  length: 0,  writing: false,  corked: 0,  sync: false,  bufferProcessing: false,  onwrite: [Function: bound onwrite],  writecb: null,  writelen: 0,  afterWriteTickInfo: null,  buffered: [],  bufferedIndex: 0,  allBuffers: true,  allNoop: true,  pendingcb: 0,  prefinished: false,  errorEmitted: false,  emitClose: false,  autoDestroy: false,  errored: null,  closed: false,  closeEmitted: false  },  allowHalfOpen: true,  _sockname: null,  _pendingData: null,  _pendingEncoding: '',  server: Server {  maxHeaderSize: undefined,  insecureHTTPParser: undefined,  _events: [Object: null prototype],  _eventsCount: 2,  _maxListeners: undefined,  _connections: 1,  _handle: [TCP],  _usingWorkers: false,  _workers: [],  _unref: false,  allowHalfOpen: true,  pauseOnConnect: false,  httpAllowHalfOpen: false,  timeout: 0,  keepAliveTimeout: 5000,  maxHeadersCount: null,  headersTimeout: 60000,  requestTimeout: 0,  _connectionKey: '4:127.0.0.1:3000',  [Symbol(IncomingMessage)]: [Function: IncomingMessage],  [Symbol(ServerResponse)]: [Function: ServerResponse],  [Symbol(kCapture)]: false,  [Symbol(async_id_symbol)]: 11  },  _server: Server {  maxHeaderSize: undefined,  insecureHTTPParser: undefined,  _events: [Object: null prototype],  _eventsCount: 2,  _maxListeners: undefined,  _connections: 1,  _handle: [TCP],  _usingWorkers: false,  _workers: [],  _unref: false,  allowHalfOpen: true,  pauseOnConnect: false,  httpAllowHalfOpen: false,  timeout: 0,  keepAliveTimeout: 5000,  maxHeadersCount: null,  headersTimeout: 60000,  requestTimeout: 0,  _connectionKey: '4:127.0.0.1:3000',  [Symbol(IncomingMessage)]: [Function: IncomingMessage],  [Symbol(ServerResponse)]: [Function: ServerResponse],  [Symbol(kCapture)]: false,  [Symbol(async_id_symbol)]: 11  },  parser: HTTPParser {  '0': [Function: bound setRequestTimeout],  '1': [Function: parserOnHeaders],  '2': [Function: parserOnHeadersComplete],  '3': [Function: parserOnBody],  '4': [Function: parserOnMessageComplete],  '5': [Function: bound onParserExecute],  '6': [Function: bound onParserTimeout],  _headers: [],  _url: '',  socket: [Circular *1],  incoming: [Circular *2],  outgoing: null,  maxHeaderPairs: 2000,  _consumed: true,  onIncoming: [Function: bound parserOnIncoming],  [Symbol(resource_symbol)]: [HTTPServerAsyncResource]  },  on: [Function: socketListenerWrap],  addListener: [Function: socketListenerWrap],  prependListener: [Function: socketListenerWrap],  _paused: false,  _httpMessage: ServerResponse {  _events: [Object: null prototype],  _eventsCount: 1,  _maxListeners: undefined,  outputData: [],  outputSize: 0,  writable: true,  destroyed: false,  _last: false,  chunkedEncoding: false,  shouldKeepAlive: true,  _defaultKeepAlive: true,  useChunkedEncodingByDefault: true,  sendDate: true,  _removedConnection: false,  _removedContLen: false,  _removedTE: false,  _contentLength: null,  _hasBody: true,  _trailer: '',  finished: false,  _headerSent: false,  socket: [Circular *1],  _header: null,  _keepAliveTimeout: 5000,  _onPendingData: [Function: bound updateOutgoingData],  _sent100: false,  _expect_continue: false,  req: [Circular *2],  locals: [Object: null prototype] {},  [Symbol(kCapture)]: false,  [Symbol(kNeedDrain)]: false,  [Symbol(corked)]: 0,  [Symbol(kOutHeaders)]: [Object: null prototype]  },  timeout: 0,  [Symbol(async_id_symbol)]: 20,  [Symbol(kHandle)]: TCP {  reading: true,  onconnection: null,  _consumed: true,  [Symbol(owner_symbol)]: [Circular *1]  },  [Symbol(kSetNoDelay)]: false,  [Symbol(lastWriteQueueSize)]: 0,  [Symbol(timeout)]: Timeout {  _idleTimeout: -1,  _idlePrev: null,  _idleNext: null,  _idleStart: 2049,  _onTimeout: null,  _timerArgs: undefined,  _repeat: null,  _destroyed: true,  [Symbol(refed)]: false,  [Symbol(kHasPrimitive)]: false,  [Symbol(asyncId)]: 28,  [Symbol(triggerId)]: 24  },  [Symbol(kBuffer)]: null,  [Symbol(kBufferCb)]: null,  [Symbol(kBufferGen)]: null,  [Symbol(kCapture)]: false,  [Symbol(kBytesRead)]: 0,  [Symbol(kBytesWritten)]: 0,  [Symbol(RequestTimeout)]: undefined  },  httpVersionMajor: 1,  httpVersionMinor: 1,  httpVersion: '1.1',  complete: false,  headers: {  host: '127.0.0.1:3000',  connection: 'keep-alive',  'content-length': '66',  'sec-ch-ua': '"Google Chrome";v="95", "Chromium";v="95", ";Not A Brand";v="99"',  accept: 'application/json, text/plain, */*',  'content-type': 'applcation/json',  'sec-ch-ua-mobile': '?0',  'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36',  'sec-ch-ua-platform': '"Linux"',  origin: 'http://localhost:4200',  'sec-fetch-site': 'cross-site',  'sec-fetch-mode': 'cors',  'sec-fetch-dest': 'empty',  referer: 'http://localhost:4200/',  'accept-encoding': 'gzip, deflate, br',  'accept-language': 'en-US,en;q=0.9'  },  rawHeaders: [  'Host',  '127.0.0.1:3000',  'Connection',  'keep-alive',  'Content-Length',  '66',  'sec-ch-ua',  '"Google Chrome";v="95", "Chromium";v="95", ";Not A Brand";v="99"',  'Accept',  'application/json, text/plain, */*',  'Content-Type',  'applcation/json',  'sec-ch-ua-mobile',  '?0',  'User-Agent',  'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36',  'sec-ch-ua-platform',  '"Linux"',  'Origin',  'http://localhost:4200',  'Sec-Fetch-Site',  'cross-site',  'Sec-Fetch-Mode',  'cors',  'Sec-Fetch-Dest',  'empty',  'Referer',  'http://localhost:4200/',  'Accept-Encoding',  'gzip, deflate, br',  'Accept-Language',  'en-US,en;q=0.9'  ],  trailers: {},  rawTrailers: [],  aborted: false,  upgrade: false,  url: '/',  method: 'POST',  statusCode: null,  statusMessage: null,  client: lt;ref *1gt; Socket {  connecting: false,  _hadError: false,  _parent: null,  _host: null,  _readableState: ReadableState {  objectMode: false,  highWaterMark: 16384,  buffer: BufferList { head: null, tail: null, length: 0 },  length: 0,  pipes: [],  flowing: true,  ended: false,  endEmitted: false,  reading: true,  sync: false,  needReadable: true,  emittedReadable: false,  readableListening: false,  resumeScheduled: false,  errorEmitted: false,  emitClose: false,  autoDestroy: false,  destroyed: false,  errored: null,  closed: false,  closeEmitted: false,  defaultEncoding: 'utf8',  awaitDrainWriters: null,  multiAwaitDrain: false,  readingMore: false,  decoder: null,  encoding: null,  [Symbol(kPaused)]: false  },  _events: [Object: null prototype] {  end: [Array],  timeout: [Function: socketOnTimeout],  data: [Function: bound socketOnData],  error: [Function: socketOnError],  close: [Array],  drain: [Function: bound socketOnDrain],  resume: [Function: onSocketResume],  pause: [Function: onSocketPause]  },  _eventsCount: 8,  _maxListeners: undefined,  _writableState: WritableState {  objectMode: false,  highWaterMark: 16384,  finalCalled: false,  needDrain: false,  ending: false,  ended: false,  finished: false,  destroyed: false,  decodeStrings: false,  defaultEncoding: 'utf8',  length: 0,  writing: false,  corked: 0,  sync: false,  bufferProcessing: false,  onwrite: [Function: bound onwrite],  writecb: null,  writelen: 0,  afterWriteTickInfo: null,  buffered: [],  bufferedIndex: 0,  allBuffers: true,  allNoop: true,  pendingcb: 0,  prefinished: false,  errorEmitted: false,  emitClose: false,  autoDestroy: false,  errored: null,  closed: false,  closeEmitted: false  },  allowHalfOpen: true,  _sockname: null,  _pendingData: null,  _pendingEncoding: '',  server: Server {  maxHeaderSize: undefined,  insecureHTTPParser: undefined,  _events: [Object: null prototype],  _eventsCount: 2,  _maxListeners: undefined,  _connections: 1,  _handle: [TCP],  _usingWorkers: false,  _workers: [],  _unref: false,  allowHalfOpen: true,  pauseOnConnect: false,  httpAllowHalfOpen: false,  timeout: 0,  keepAliveTimeout: 5000,  maxHeadersCount: null,  headersTimeout: 60000,  requestTimeout: 0,  _connectionKey: '4:127.0.0.1:3000',  [Symbol(IncomingMessage)]: [Function: IncomingMessage],  [Symbol(ServerResponse)]: [Function: ServerResponse],  [Symbol(kCapture)]: false,  [Symbol(async_id_symbol)]: 11  },  _server: Server {  maxHeaderSize: undefined,  insecureHTTPParser: undefined,  _events: [Object: null prototype],  _eventsCount: 2,  _maxListeners: undefined,  _connections: 1,  _handle: [TCP],  _usingWorkers: false,  _workers: [],  _unref: false,  allowHalfOpen: true,  pauseOnConnect: false,  httpAllowHalfOpen: false,  timeout: 0,  keepAliveTimeout: 5000,  maxHeadersCount: null,  headersTimeout: 60000,  requestTimeout: 0,  _connectionKey: '4:127.0.0.1:3000',  [Symbol(IncomingMessage)]: [Function: IncomingMessage],  [Symbol(ServerResponse)]: [Function: ServerResponse],  [Symbol(kCapture)]: false,  [Symbol(async_id_symbol)]: 11  },  parser: HTTPParser {  '0': [Function: bound setRequestTimeout],  '1': [Function: parserOnHeaders],  '2': [Function: parserOnHeadersComplete],  '3': [Function: parserOnBody],  '4': [Function: parserOnMessageComplete],  '5': [Function: bound onParserExecute],  '6': [Function: bound onParserTimeout],  _headers: [],  _url: '',  socket: [Circular *1],  incoming: [Circular *2],  outgoing: null,  maxHeaderPairs: 2000,  _consumed: true,  onIncoming: [Function: bound parserOnIncoming],  [Symbol(resource_symbol)]: [HTTPServerAsyncResource]  },  on: [Function: socketListenerWrap],  addListener: [Function: socketListenerWrap],  prependListener: [Function: socketListenerWrap],  _paused: false,  _httpMessage: ServerResponse {  _events: [Object: null prototype],  _eventsCount: 1,  _maxListeners: undefined,  outputData: [],  outputSize: 0,  writable: true,  destroyed: false,  _last: false,  chunkedEncoding: false,  shouldKeepAlive: true,  _defaultKeepAlive: true,  useChunkedEncodingByDefault: true,  sendDate: true,  _removedConnection: false,  _removedContLen: false,  _removedTE: false,  _contentLength: null,  _hasBody: true,  _trailer: '',  finished: false,  _headerSent: false,  socket: [Circular *1],  _header: null,  _keepAliveTimeout: 5000,  _onPendingData: [Function: bound updateOutgoingData],  _sent100: false,  _expect_continue: false,  req: [Circular *2],  locals: [Object: null prototype] {},  [Symbol(kCapture)]: false,  [Symbol(kNeedDrain)]: false,  [Symbol(corked)]: 0,  [Symbol(kOutHeaders)]: [Object: null prototype]  },  timeout: 0,  [Symbol(async_id_symbol)]: 20,  [Symbol(kHandle)]: TCP {  reading: true,  onconnection: null,  _consumed: true,  [Symbol(owner_symbol)]: [Circular *1]  },  [Symbol(kSetNoDelay)]: false,  [Symbol(lastWriteQueueSize)]: 0,  [Symbol(timeout)]: Timeout {  _idleTimeout: -1,  _idlePrev: null,  _idleNext: null,  _idleStart: 2049,  _onTimeout: null,  _timerArgs: undefined,  _repeat: null,  _destroyed: true,  [Symbol(refed)]: false,  [Symbol(kHasPrimitive)]: false,  [Symbol(asyncId)]: 28,  [Symbol(triggerId)]: 24  },  [Symbol(kBuffer)]: null,  [Symbol(kBufferCb)]: null,  [Symbol(kBufferGen)]: null,  [Symbol(kCapture)]: false,  [Symbol(kBytesRead)]: 0,  [Symbol(kBytesWritten)]: 0,  [Symbol(RequestTimeout)]: undefined  },  _consuming: false,  _dumped: false,  next: [Function: next],  baseUrl: '',  originalUrl: '/',  _parsedUrl: Url {  protocol: null,  slashes: null,  auth: null,  host: null,  port: null,  hostname: null,  hash: null,  search: null,  query: null,  pathname: '/',  path: '/',  href: '/',  _raw: '/'  },  params: {},  query: {},  res: lt;ref *3gt; ServerResponse {  _events: [Object: null prototype] { finish: [Function: bound resOnFinish] },  _eventsCount: 1,  _maxListeners: undefined,  outputData: [],  outputSize: 0,  writable: true,  destroyed: false,  _last: false,  chunkedEncoding: false,  shouldKeepAlive: true,  _defaultKeepAlive: true,  useChunkedEncodingByDefault: true,  sendDate: true,  _removedConnection: false,  _removedContLen: false,  _removedTE: false,  _contentLength: null,  _hasBody: true,  _trailer: '',  finished: false,  _headerSent: false,  socket: lt;ref *1gt; Socket {  connecting: false,  _hadError: false,  _parent: null,  _host: null,  _readableState: [ReadableState],  _events: [Object: null prototype],  _eventsCount: 8,  _maxListeners: undefined,  _writableState: [WritableState],  allowHalfOpen: true,  _sockname: null,  _pendingData: null,  _pendingEncoding: '',  server: [Server],  _server: [Server],  parser: [HTTPParser],  on: [Function: socketListenerWrap],  addListener: [Function: socketListenerWrap],  prependListener: [Function: socketListenerWrap],  _paused: false,  _httpMessage: [Circular *3],  timeout: 0,  [Symbol(async_id_symbol)]: 20,  [Symbol(kHandle)]: [TCP],  [Symbol(kSetNoDelay)]: false,  [Symbol(lastWriteQueueSize)]: 0,  [Symbol(timeout)]: Timeout {  _idleTimeout: -1,  _idlePrev: null,  _idleNext: null,  _idleStart: 2049,  _onTimeout: null,  _timerArgs: undefined,  _repeat: null,  _destroyed: true,  [Symbol(refed)]: false,  [Symbol(kHasPrimitive)]: false,  [Symbol(asyncId)]: 28,  [Symbol(triggerId)]: 24  },  [Symbol(kBuffer)]: null,  [Symbol(kBufferCb)]: null,  [Symbol(kBufferGen)]: null,  [Symbol(kCapture)]: false,  [Symbol(kBytesRead)]: 0,  [Symbol(kBytesWritten)]: 0,  [Symbol(RequestTimeout)]: undefined  },  _header: null,  _keepAliveTimeout: 5000,  _onPendingData: [Function: bound updateOutgoingData],  _sent100: false,  _expect_continue: false,  req: [Circular *2],  locals: [Object: null prototype] {},  [Symbol(kCapture)]: false,  [Symbol(kNeedDrain)]: false,  [Symbol(corked)]: 0,  [Symbol(kOutHeaders)]: [Object: null prototype] {  'x-powered-by': [Array],  'access-control-allow-origin': [Array],  vary: [Array]  }  },  body: {},  route: Route { path: '/', stack: [ [Layer] ], methods: { post: true } },  [Symbol(kCapture)]: false,  [Symbol(RequestTimeout)]:  

Итак, вот мой вопрос: как мне получить параметры записи в NodeJS?

Как и в комментариях, на стороне клиента вам нужно указать content type явно.

например:

 'Content-Type': 'application/json'  

затем в вашем экспресс-приложении:

 console.log(req.body)  

кредиты @isolated и @john в комментариях к вопросу