我的提示是这样的：

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

这个是没有启动服务器导致的，需要先启动服务器，在启动服务器的时候又提示：

连接数据库失败 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_项目\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_项目\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_项目\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.

出现这个问题是没有启动数据库导致的，只需要在搜索中输入服务，找到MongoDB打开就可以了，我设置的是手动，因此开次开机都需要手动打开

然后再去测试接口，发现就可以了：