내가 내 몽고 DB를 로컬 호스트에 연결하고 "이름"을 찾으려면이 코드를 사용하지만 난 consol.log에서 문제가 발견 몽고 년은 { "name" : "pooya" }
를 반환하지만 nodjs 코드에 반환 :nodejs와 몽고 DB
Success connecting to mongodb://localhost.
{ db:
{ domain: null,
_events: {},
_maxListeners: 10,
databaseName: 'test',
serverConfig:
{ domain: null,
_events: {},
_maxListeners: 10,
_callBackStore: [Object],
_commandsStore: [Object],
auth: [Object],
_dbStore: [Object],
host: 'localhost',
port: 27017,
options: [Object],
internalMaster: true,
connected: true,
poolSize: 5,
disableDriverBSONSizeCheck: false,
_used: true,
replicasetInstance: null,
emitOpen: false,
ssl: false,
sslValidate: false,
sslCA: null,
sslCert: undefined,
sslKey: undefined,
sslPass: undefined,
serverCapabilities: [Object],
name: 'localhost:27017',
socketOptions: [Object],
logger: [Object],
eventHandlers: [Object],
_serverState: 'connected',
_state: [Object],
recordQueryStats: false,
socketTimeoutMS: [Getter/Setter],
_readPreference: [Object],
db: [Circular],
dbInstances: [Object],
connectionPool: [Object],
isMasterDoc: [Object] },
options:
{ read_preference_tags: null,
read_preference: 'primary',
url: 'mongodb://localhost:27017/test',
native_parser: true,
readPreference: [Object],
safe: false,
w: 1 },
_applicationClosed: false,
slaveOk: false,
bufferMaxEntries: -1,
native_parser: true,
bsonLib:
{ BSON: [Object],
Long: [Object],
ObjectID: [Object],
DBRef: [Function: DBRef],
Code: [Function: Code],
Timestamp: [Object],
Binary: [Object],
Double: [Function: Double],
MaxKey: [Function: MaxKey],
MinKey: [Function: MinKey],
Symbol: [Function: Symbol] },
bson: { promoteLongs: true },
bson_deserializer:
{ Code: [Function: Code],
Symbol: [Function: Symbol],
BSON: [Object],
DBRef: [Function: DBRef],
Binary: [Object],
ObjectID: [Object],
Long: [Object],
Timestamp: [Object],
Double: [Function: Double],
MinKey: [Function: MinKey],
MaxKey: [Function: MaxKey],
promoteLongs: true },
bson_serializer:
{ Code: [Function: Code],
Symbol: [Function: Symbol],
BSON: [Object],
DBRef: [Function: DBRef],
Binary: [Object],
ObjectID: [Object],
Long: [Object],
Timestamp: [Object],
Double: [Function: Double],
MinKey: [Function: MinKey],
MaxKey: [Function: MaxKey],
promoteLongs: true },
_state: 'connected',
pkFactory:
{ [Function: ObjectID]
index: 2954887,
createPk: [Function: createPk],
createFromTime: [Function: createFromTime],
createFromHexString: [Function: createFromHexString],
isValid: [Function: isValid] },
forceServerObjectId: false,
safe: false,
notReplied: {},
isInitializing: true,
openCalled: true,
commands: [],
logger: { error: [Function], log: [Function], debug: [Function] },
tag: 1416152062206,
eventHandlers:
{ error: [],
parseError: [],
poolReady: [],
message: [],
close: [] },
serializeFunctions: false,
raw: false,
recordQueryStats: false,
retryMiliSeconds: 1000,
numberOfRetries: 60,
readPreference: { _type: 'ReadPreference', mode: 'primary', tags: undefined } },
collection:
{ db:
{ domain: null,
_events: {},
_maxListeners: 10,
databaseName: 'test',
serverConfig: [Object],
options: [Object],
_applicationClosed: false,
slaveOk: false,
bufferMaxEntries: -1,
native_parser: true,
bsonLib: [Object],
bson: [Object],
bson_deserializer: [Object],
bson_serializer: [Object],
_state: 'connected',
pkFactory: [Object],
forceServerObjectId: false,
safe: false,
notReplied: {},
isInitializing: true,
openCalled: true,
commands: [],
logger: [Object],
tag: 1416152062206,
eventHandlers: [Object],
serializeFunctions: false,
raw: false,
recordQueryStats: false,
retryMiliSeconds: 1000,
numberOfRetries: 60,
readPreference: [Object] },
collectionName: 'test',
internalHint: null,
opts: {},
slaveOk: false,
serializeFunctions: false,
raw: false,
readPreference: { _type: 'ReadPreference', mode: 'primary', tags: undefined },
pkFactory:
{ [Function: ObjectID]
index: 2954887,
createPk: [Function: createPk],
createFromTime: [Function: createFromTime],
createFromHexString: [Function: createFromHexString],
isValid: [Function: isValid] },
serverCapabilities: undefined },
selector: {},
fields: { name: 1, _id: 0 },
skipValue: 0,
limitValue: 0,
sortValue: undefined,
hint: null,
explainValue: undefined,
snapshot: undefined,
timeout: true,
tailable: undefined,
awaitdata: undefined,
oplogReplay: undefined,
numberOfRetries: 5,
currentNumberOfRetries: 5,
batchSizeValue: 0,
raw: false,
readPreference: { _type: 'ReadPreference', mode: 'primary', tags: undefined },
returnKey: undefined,
maxScan: undefined,
min: undefined,
max: undefined,
showDiskLoc: undefined,
comment: undefined,
tailableRetryInterval: 100,
exhaust: false,
partial: false,
slaveOk: false,
maxTimeMSValue: undefined,
connection: undefined,
totalNumberOfRecords: 0,
items: [],
cursorId: { _bsontype: 'Long', low_: 0, high_: 0 },
dbName: undefined,
state: 0,
queryRun: false,
getMoreTimer: false,
collectionName: 'test.test' }
왜 그 일이 어떻게 그것을 해결하기 위해?
하지만 정의되지 않은 반환 mongo.MongoClient.connect (uristring, 기능 (ERR, dB) { \t \t db.collection ("테스트", 기능 (모음) {\t console.log ("+ mongoUrl.protocol +"// "mongoUrl.hostname +". ")";에 연결 성공. \t \t collection.find ({}, {이름 : 1, _id : 0 }, 함수 (결과) \t \t { \t \t \t 콘솔.로그 (결과); \t \t \t db.close(); \t \t}); \t}); }}); – pofa
앞서 말했듯이, 당신은 또한'collection.find()'메소드를 잘못 사용하고 있습니다. 그것은'collection.find ({name : 1, _id : 0}, 새로운 함수 ...)'이어야합니다. 명백한 이유없이 첫 번째 매개 변수를 건너 뜁니다. 두 번째 매개 변수는'explain','limit's,'timeout'과 같은 질의 옵션입니다. 콜백의 첫 번째 매개 변수는 쿼리에서 실패를보고 할 수있는 오류 객체입니다. 따라서 콜백은 새로운 함수 (오류, 결과)처럼 보일 수 있습니다. 자세한 내용은 오류를 확인할 수 있습니다. –
답변을 다시 확인하십시오, 나는 실수를했고 지금 바로 수정했습니다. –