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私はノードを新しくしました& mongodb、 mongoコレクションからデータを取得する必要がありますが、db.collection（ 'mycoll' ）.fine（）メソッドは、多くのデータを戻しますが、私の必要なデータはコルレクションのレコードです。ここ は私のサーバー側のロジックです：mongodb find（）メソッドから多くのデータを取得しますが、必要なデータは何もありません。
var url = 'mongodb://localhost:27017/wdk';
var resultArray = {};
mongodb.connect(url, function (err, db) {
var cursor = db.collection('projects').find({username:"new"});
cursor.forEach(function (docs,err) {
resultArray.push(docs);
}, function() {
db.close();
res.render('index',{
items:resultArray,
name: profile_name,
email: profile_email
});
});
console.log(cursor);
そして、ここではそれがコンソールに返すものです：
Readable {
pool: null,
server: null,
disconnectHandler:
{ s: { storedOps: [], storeOptions: [Object], topology: [Object] },
length: [Getter] },
bson: {},
ns: 'wdk.projects',
cmd:
{ find: 'wdk.projects',
limit: 0,
skip: 0,
query: { pusername: 'extra' },
slaveOk: true,
readPreference: { preference: 'primary', tags: undefined, options: undefined } },
options:
{ skip: 0,
limit: 0,
raw: undefined,
hint: null,
timeout: undefined,
slaveOk: true,
readPreference: { preference: 'primary', tags: undefined, options: undefined },
db:
EventEmitter {
domain: null,
_events: {},
_eventsCount: 0,
_maxListeners: undefined,
s: [Object],
serverConfig: [Getter],
bufferMaxEntries: [Getter],
databaseName: [Getter] },
promiseLibrary: [Function: Promise],
disconnectHandler: { s: [Object], length: [Getter] } },
topology:
EventEmitter {
domain: null,
_events:
{ reconnect: [Function],
timeout: [Object],
error: [Object],
close: [Function],
destroy: [Object],
serverDescriptionChanged: [Function],
serverHeartbeatStarted: [Function],
serverHeartbeatSucceeded: [Function],
serverHearbeatFailed: [Function],
serverOpening: [Function],
serverClosed: [Function],
topologyOpening: [Function],
topologyClosed: [Function],
topologyDescriptionChanged: [Function] },
_eventsCount: 14,
_maxListeners: undefined,
s:
{ options: [Object],
callbacks: [Object],
logger: [Object],
state: 'connected',
reconnect: true,
reconnectTries: 30,
reconnectInterval: 1000,
emitError: true,
currentReconnectRetry: 30,
ismaster: [Object],
readPreferenceStrategies: undefined,
authProviders: [Object],
id: 3,
topologyId: -1,
tag: undefined,
disconnectHandler: [Object],
monitoring: false,
haInterval: 10000,
wireProtocolHandler: [Object],
Cursor: [Object],
bsonInstance: {},
inquireServerStateTimeout: null,
bson: {},
pool: [Object],
isMasterLatencyMS: 1,
inTopology: false,
serverDetails: [Object],
serverDescription: null,
topologyDescription: null },
hashedName: '1309e35791f04f1f4fc35d5e683e81d350dd04f4',
name: [Getter],
bson: [Getter],
wireProtocolHandler: [Getter],
id: [Getter] },
cursorState:
{ cursorId: null,
cmd:
{ find: 'wdk.projects',
limit: 0,
skip: 0,
query: [Object],
slaveOk: true,
readPreference: [Object] },
documents: [],
cursorIndex: 0,
dead: false,
killed: false,
init: false,
notified: false,
limit: 0,
skip: 0,
batchSize: 1000,
currentLimit: 0,
transforms: undefined },
callbacks: null,
logger: { className: 'Cursor' },
_readableState:
ReadableState {
objectMode: true,
highWaterMark: 16,
buffer: [],
length: 0,
pipes: null,
pipesCount: 0,
flowing: null,
ended: false,
endEmitted: false,
reading: false,
sync: true,
needReadable: false,
emittedReadable: false,
readableListening: false,
defaultEncoding: 'utf8',
ranOut: false,
awaitDrain: 0,
readingMore: false,
decoder: null,
encoding: null },
readable: true,
domain: null,
_events: {},
_eventsCount: 0,
_maxListeners: undefined,
s:
{ numberOfRetries: 5,
tailableRetryInterval: 500,
currentNumberOfRetries: 5,
state: 0,
streamOptions: {},
bson: {},
ns: 'wdk.projects',
cmd:
{ find: 'wdk.projects',
limit: 0,
skip: 0,
query: [Object],
slaveOk: true,
readPreference: [Object] },
options:
{ skip: 0,
limit: 0,
raw: undefined,
hint: null,
timeout: undefined,
slaveOk: true,
readPreference: [Object],
db: [Object],
promiseLibrary: [Function: Promise],
disconnectHandler: [Object] },
topology:
EventEmitter {
domain: null,
_events: [Object],
_eventsCount: 14,
_maxListeners: undefined,
s: [Object],
hashedName: '1309e35791f04f1f4fc35d5e683e81d350dd04f4',
name: [Getter],
bson: [Getter],
wireProtocolHandler: [Getter],
id: [Getter] },
topologyOptions:
{ socketOptions: {},
auto_reconnect: true,
host: 'localhost',
port: 27017,
cursorFactory: [Object],
reconnect: true,
emitError: true,
size: 5,
disconnectHandler: [Object],
{ find: 'wdk.projects',
limit: 0,
skip: 0,
query: { pusername: 'extra' },
slaveOk: true,
readPreference: { preference: 'primary', tags: undefined, options: undefined } },
options:
{ skip: 0,
limit: 0,
raw: undefined,
hint: null,
timeout: undefined,
slaveOk: true,
readPreference: { preference: 'primary', tags: undefined, options: undefined },
db:
EventEmitter {
domain: null,
_events: {},
_eventsCount: 0,
_maxListeners: undefined,
s: [Object],
serverConfig: [Getter],
bufferMaxEntries: [Getter],
databaseName: [Getter] },
promiseLibrary: [Function: Promise],
disconnectHandler: { s: [Object], length: [Getter] } },
topology:
EventEmitter {
domain: null,
_events:
{ reconnect: [Function],
timeout: [Object],
error: [Object],
close: [Function],
destroy: [Object],
serverDescriptionChanged: [Function],
serverHeartbeatStarted: [Function],
serverHeartbeatSucceeded: [Function],
serverHearbeatFailed: [Function],
serverOpening: [Function],
serverClosed: [Function],
topologyOpening: [Function],
topologyClosed: [Function],
topologyDescriptionChanged: [Function] },
_eventsCount: 14,
_maxListeners: undefined,
s:
{ options: [Object],
callbacks: [Object],
logger: [Object],
state: 'connected',
reconnect: true,
reconnectTries: 30,
reconnectInterval: 1000,
emitError: true,
currentReconnectRetry: 30,
ismaster: [Object],
readPreferenceStrategies: undefined,
authProviders: [Object],
id: 3,
topologyId: -1,
tag: undefined,
disconnectHandler: [Object],
monitoring: false,
haInterval: 10000,
wireProtocolHandler: [Object],
Cursor: [Object],
bsonInstance: {},
inquireServerStateTimeout: null,
bson: {},
pool: [Object],
isMasterLatencyMS: 1,
inTopology: false,
serverDetails: [Object],
serverDescription: null,
topologyDescription: null },
hashedName: '1309e35791f04f1f4fc35d5e683e81d350dd04f4',
name: [Getter],
bson: [Getter],
wireProtocolHandler: [Getter],
id: [Getter] },
cursorState:
{ cursorId: null,
cmd:
{ find: 'wdk.projects',
limit: 0,
skip: 0,
query: [Object],
slaveOk: true,
readPreference: [Object] },
documents: [],
cursorIndex: 0,
dead: false,
killed: false,
init: false,
notified: false,
limit: 0,
skip: 0,
batchSize: 1000,
currentLimit: 0,
transforms: undefined },
callbacks: null,
logger: { className: 'Cursor' },
_readableState:
ReadableState {
objectMode: true,
highWaterMark: 16,
buffer: [],
length: 0,
pipes: null,
pipesCount: 0,
flowing: null,
ended: false,
endEmitted: false,
reading: false,
sync: true,
needReadable: false,
emittedReadable: false,
readableListening: false,
defaultEncoding: 'utf8',
ranOut: false,
awaitDrain: 0,
readingMore: false,
decoder: null,
encoding: null },
readable: true,
domain: null,
_events: {},
_eventsCount: 0,
_maxListeners: undefined,
s:
{ numberOfRetries: 5,
tailableRetryInterval: 500,
currentNumberOfRetries: 5,
state: 0,
streamOptions: {},
bson: {},
ns: 'wdk.projects',
cmd:
{ find: 'wdk.projects',
limit: 0,
skip: 0,
query: [Object],
slaveOk: true,
readPreference: [Object] },
options:
{ skip: 0,
limit: 0,
raw: undefined,
hint: null,
timeout: undefined,
slaveOk: true,
readPreference: [Object],
db: [Object],
promiseLibrary: [Function: Promise],
disconnectHandler: [Object] },
topology:
EventEmitter {
domain: null,
_events: [Object],
_eventsCount: 14,
_maxListeners: undefined,
s: [Object],
hashedName: '1309e35791f04f1f4fc35d5e683e81d350dd04f4',
name: [Getter],
bson: [Getter],
wireProtocolHandler: [Getter],
messageHandler: [Function],
wireProtocolHandler: [Object] },
promiseLibrary: [Function: Promise],
currentDoc: null },
ignoreUndefined: false,
maxBsonSize: 16777216,
checkKeys: false,
batchSize: -1,
tailable: false,
slaveOk: false,
oplogReplay: false,
noCursorTimeout: false,
awaitData: false,
exhaust: false,
partial: false,
documentsReturnedIn: 'firstBatch' } }
そして、ここでは、私はMongoのコンソール上で照会するとき私が得る何です： enter image description here
ありがとうございますrobertklep！それは今働いている！ –
hi robertklep！私は別のエラーで立ち往生しています、私はルートにリクエストを取得してこのデータを取得していますが、リフレッシュすると表示されるデータが繰り返されます。どうすればこのエラーを解決できますか？ –
@AbdulRehmanおそらく別の質問を作成する必要があります:-) – robertklep