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TypeError: db.collection is not a function

分类: IT文章 • 2023-11-03 18:28:48

1、错误描述

F:
odejs>node insertData.js
(node:10028) DeprecationWarning: current URL string parser is deprecated, and wi
ll be removed in a future version. To use the new parser, pass option { useNewUr
lParser: true } to MongoClient.connect.
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F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperationsmongo_client_ops.js
:439
      throw err;
      ^

TypeError: db.collection is not a function
    at writeData (F:
odejsinsertData.js:5:22)
    at F:
odejsinsertData.js:19:2
    at result (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibutils.js:414:17
)
    at executeCallback (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibutils.
js:406:9)
    at err (F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperationsmongo_c
lient_ops.js:285:5)
    at connectCallback (F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperat
ionsmongo_client_ops.js:240:5)
    at process.nextTick (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibopera
tionsmongo_client_ops.js:436:7)
    at process._tickCallback (internal/process/next_tick.js:61:11)

F:
odejs>node insertData.js
(node:4900) DeprecationWarning: current URL string parser is deprecated, and wil
l be removed in a future version. To use the new parser, pass option { useNewUrl
Parser: true } to MongoClient.connect.
���ӳɹ���
F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperationsmongo_client_ops.js
:439
      throw err;
      ^

TypeError: collection.insert is not a function
    at writeData (F:
odejsinsertData.js:7:13)
    at F:
odejsinsertData.js:19:2
    at result (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibutils.js:414:17
)
    at executeCallback (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibutils.
js:406:9)
    at err (F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperationsmongo_c
lient_ops.js:285:5)
    at connectCallback (F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperat
ionsmongo_client_ops.js:240:5)
    at process.nextTick (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibopera
tionsmongo_client_ops.js:436:7)
    at process._tickCallback (internal/process/next_tick.js:61:11)

F:
odejs>node insertData.js
(node:9572) DeprecationWarning: current URL string parser is deprecated, and wil
l be removed in a future version. To use the new parser, pass option { useNewUrl
Parser: true } to MongoClient.connect.
���ӳɹ���
F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperationsmongo_client_ops.js
:439
      throw err;
      ^

TypeError: collection.insertOne is not a function
    at writeData (F:
odejsinsertData.js:7:13)
    at F:
odejsinsertData.js:19:2
    at result (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibutils.js:414:17
)
    at executeCallback (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibutils.
js:406:9)
    at err (F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperationsmongo_c
lient_ops.js:285:5)
    at connectCallback (F:
odejs
ode_modules\_mongodb@3.1.1@mongodbliboperat
ionsmongo_client_ops.js:240:5)
    at process.nextTick (F:
odejs
ode_modules\_mongodb@3.1.1@mongodblibopera
tionsmongo_client_ops.js:436:7)
    at process._tickCallback (internal/process/next_tick.js:61:11)

F:
odejs>node insertData.js
(node:10664) DeprecationWarning: current URL string parser is deprecated, and wi
ll be removed in a future version. To use the new parser, pass option { useNewUr
lParser: true } to MongoClient.connect.
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����MongoError: doc parameter must be an object
^C
F:
odejs>node insertData.js
(node:10308) DeprecationWarning: current URL string parser is deprecated, and wi
ll be removed in a future version. To use the new parser, pass option { useNewUr
lParser: true } to MongoClient.connect.
���ӳɹ���
CommandResult {
  result: { n: 1, ok: 1 },
  connection:
   Connection {
     _events:
      { error: [Function],
        close: [Function],
        timeout: [Function],
        parseError: [Function] },
     _eventsCount: 4,
     _maxListeners: undefined,
     options:
      { host: 'localhost',
        port: 27017,
        size: 5,
        minSize: 0,
        connectionTimeout: 30000,
        socketTimeout: 360000,
        keepAlive: true,
        keepAliveInitialDelay: 300000,
        noDelay: true,
        ssl: false,
        checkServerIdentity: true,
        ca: null,
        crl: null,
        cert: null,
        key: null,
        passPhrase: null,
        rejectUnauthorized: false,
        promoteLongs: true,
        promoteValues: true,
        promoteBuffers: false,
        reconnect: true,
        reconnectInterval: 1000,
        reconnectTries: 30,
        domainsEnabled: false,
        disconnectHandler: [Store],
        cursorFactory: [Function],
        emitError: true,
        monitorCommands: false,
        socketOptions: {},
        promiseLibrary: [Function: Promise],
        clientInfo: [Object],
        read_preference_tags: null,
        readPreference: [ReadPreference],
        dbName: 'student',
        servers: [Array],
        server_options: [Object],
        db_options: [Object],
        rs_options: [Object],
        mongos_options: [Object],
        socketTimeoutMS: 360000,
        connectTimeoutMS: 30000,
        bson: BSON {} },
     id: 0,
     logger: Logger { className: 'Connection' },
     bson: BSON {},
     tag: undefined,
     messageHandler: [Function],
     maxBsonMessageSize: 67108864,
     port: 27017,
     host: 'localhost',
     family: undefined,
     keepAlive: true,
     keepAliveInitialDelay: 300000,
     noDelay: true,
     connectionTimeout: 30000,
     socketTimeout: 360000,
     destroyed: false,
     domainSocket: false,
     singleBufferSerializtion: true,
     serializationFunction: 'toBinUnified',
     ca: null,
     crl: null,
     cert: null,
     key: null,
     passphrase: null,
     ciphers: null,
     ecdhCurve: null,
     ssl: false,
     rejectUnauthorized: false,
     checkServerIdentity: true,
     responseOptions:
      { promoteLongs: true,
        promoteValues: true,
        promoteBuffers: false },
     flushing: false,
     queue: [],
     connection:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [TCP],
        _parent: null,
        _host: 'localhost',
        _readableState: [ReadableState],
        readable: true,
        _events: [Object],
        _eventsCount: 5,
        _maxListeners: undefined,
        _writableState: [WritableState],
        writable: true,
        allowHalfOpen: false,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: null,
        _server: null,
        timeout: 360000,
        [Symbol(asyncId)]: 15,
        [Symbol(lastWriteQueueSize)]: 0,
        [Symbol(timeout)]: [Timeout],
        [Symbol(kBytesRead)]: 0,
        [Symbol(kBytesWritten)]: 0 },
     writeStream: null,
     hashedName: '29bafad3b32b11dc7ce934204952515ea5984b3c',
     workItems: [],
     buffer: null,
     sizeOfMessage: 0,
     bytesRead: 0,
     stubBuffer: null },
  message:
   Response {
     parsed: true,
     raw:
      <Buffer 3c 00 00 00 f0 02 00 00 02 00 00 00 01 00 00 00 08 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 01 00 00 00 18 00 00 00 10 6e 00 01 00 00 00 01 6f
 6b ... >,
     data:
      <Buffer 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 18 00
00 00 10 6e 00 01 00 00 00 01 6f 6b 00 00 00 00 00 00 00 f0 3f 00>,
     bson: BSON {},
     opts:
      { promoteLongs: true,
        promoteValues: true,
        promoteBuffers: false },
     length: 60,
     requestId: 752,
     responseTo: 2,
     opCode: 1,
     fromCompressed: undefined,
     responseFlags: 8,
     cursorId: Long { _bsontype: 'Long', low_: 0, high_: 0 },
     startingFrom: 0,
     numberReturned: 1,
     documents: [ [Object] ],
     cursorNotFound: false,
     queryFailure: false,
     shardConfigStale: false,
     awaitCapable: true,
     promoteLongs: true,
     promoteValues: true,
     promoteBuffers: false,
     index: 44,
     hashedName: '29bafad3b32b11dc7ce934204952515ea5984b3c' },
  ops:
   [ { name: 'zhangsan', age: '30', _id: 5b70f4bea602b02844490a15 } ],
  insertedCount: 1,
  insertedId: 5b70f4bea602b02844490a15 }

F:
odejs>

2、错误原因

      在使用Node.js操作MongoDB数据库，想向里面插入数据记录，写了一个JavaScript文件，调用了collection函数，但是这个旧版本的方法，新版本的方法不是这个，换成db()。

3、解决办法

var MongoClient = require('mongodb').MongoClient;
var DB_URL = 'mongodb://localhost:27017/student';

var writeData = function(db,callback){
	var dbo = db.db('t_sales');
	var data = {'name':'zhangsan','age':'30'};
	dbo.collection('t_sales').insertOne(data,function(error,result){
		if(error){
			console.log('错误：'+error);
			return;
		};

		callback(result);
	});
}

MongoClient.connect(DB_URL,function(error,db){
	console.log('连接成功！');
	writeData(db,function(result){
		console.log(result);
		db.close();
	});
});

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