我的提示是這樣的：

GET http://localhost:*
Error: connect ECONNREFUSED 127.0.0.1:4000

    Request Headers
    User-Agent: PostmanRuntime/7.26.5
    Accept: */*
    Postman-Token: *
    Host: localhost:4000
    Accept-Encoding: gzip, deflate, br

這個是沒有啟動服務器導致的，需要先啟動服務器，在啟動服務器的時候又提示：

連接數據庫失敗 MongoNetworkError: failed to connect to server [localhost:27010] on first connect [Error: connect ECONNREFUSED 127.0.0.1:27010
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1138:16) {
  name: 'MongoNetworkError',
  errorLabels: [Array],
  [Symbol(mongoErrorContextSymbol)]: {}
}]
    at Pool.<anonymous> (F:\vue\Vue_項目\code\code\gshop-server_final\node_modules\mongodb-core\lib\topologies\server.js:564:11)
    at Pool.emit (events.js:311:20)
    at Connection.<anonymous> (F:\vue\Vue_項目\code\code\gshop-server_final\node_modules\mongodb-core\lib\connection\pool.js:317:12)
    at Object.onceWrapper (events.js:418:26)
    at Connection.emit (events.js:311:20)
    at Socket.<anonymous> (F:\vue\Vue_項目\code\code\gshop-server_final\node_modules\mongodb-core\lib\connection\connection.js:246:50)
    at Object.onceWrapper (events.js:418:26)
    at Socket.emit (events.js:311:20)
    at emitErrorNT (internal/streams/destroy.js:92:8)
    at emitErrorAndCloseNT (internal/streams/destroy.js:60:3)
    at processTicksAndRejections (internal/process/task_queues.js:84:21) {
  name: 'MongoNetworkError',
  errorLabels: [ 'TransientTransactionError' ],
  [Symbol(mongoErrorContextSymbol)]: {}
}
Done in 8.65s.

出現這個問題是沒有啟動數據庫導致的，只需要在搜索中輸入服務，找到MongoDB打開就可以了，我設置的是手動，因此開次開機都需要手動打開

然后再去測試接口，發現就可以了：