Question

我在Mongoose DB上创建了一个文档，其结构如下：

{
"_id": {
    "$oid": "55bb2c92e4b0759bdca17fdc"
},
"email": "Customer1@xyz.com",
"serviceType": "Electricity",
"month": "JAN",
"year": "2015",
"bill": [
    {
        "PeakMsmt": "1",
        "OffPeakMsmt": "2",
        "Week": "Week1",
        "WeekEndTimeStamp": "2015-10-10T00:00:00.000Z"
    },
    {
        "PeakMsmt": "2",
        "OffPeakMsmt": "3",
        "Week": "Week2",
        "WeekEndTimeStamp": "2015-11-10T00:00:00.000Z"
    },
    {
        "PeakMsmt": "3",
        "OffPeakMsmt": "4",
        "Week": "Week3",
        "WeekEndTimeStamp": "2015-12-10T00:00:00.000Z"
    }
]
}

我的Node.JS代码是：

var mongoose   = require("mongoose");
mongoose.connect('mongodb://MY_MONGO_DB_URL');

var oub = require('./OptimizeUtilityBill');
oub.find({email:'Customer1@xyz.com',serviceType:'Electricity',month:'FEB',year:'2015'},function(err,oubDBResult){
        if(err){
            console.log("Error: "+err);
        }else{
            console.log("OUB result: "+oubDBResult);
        }
    });

我在节点JS中的mongoose模式是：

var mongoose = require('mongoose');
var Schema  = mongoose.Schema;

var OptimizeUtilityBillSchema = new Schema({
    email:String,
    serviceType:String,
    month:String,
    year:String,
    bill:[{PeakMsmt:String,
        OffPeakMsmt:String,
        Week:String,
        WeekEndTimeStamp:String}]
});

module.exports = mongoose.model('optimizeUtilityBill', OptimizeUtilityBillSchema);

请帮助，我是node.JS和mongoose的新手。我花了好几个小时试图让它工作，并且还搜索了很多Mongoose模式。但是无法查询mongoose。

运行此程序时，我得到以下结果：

Answer 1

试试这个：

var mongoose   = require("mongoose");
var db = mongoose.connect('mongodb://MY_MONGO_DB_URL');
var oub = require('./OptimizeUtilityBill'); 

db.on('error', function(){console.log('connection error')});
db.once('open', function (callback) {
   oub.find({email:'Customer1@xyz.com',serviceType:'Electricity',month:'FEB',year:'2015'},function(err,oubDBResult){
    if(err){
        console.log("Error: "+err);
    }else{
        console.log("OUB result: "+oubDBResult);
    }
});
});

您并没有等待连接真正开放。

Answer 2

我的问题的解决方案在这里：

Mongoose find() not returning result

为了使其工作，我需要将我的架构导出为：

module.exports = mongoose.model('optimizeUtilityBills', OptimizeUtilityBillSchema,'optimizeUtilityBills');

注意：optimizeUtilityBills是mongoDB中我的文档的名称。

谢谢你的帮助。

无法从Mongoose DB中检索数据？返回空白结果？

2 个答案: