Question

我想将“结果”复制到“最终结果”，但是我需要填写缺失的日期。我在下面编写了代码，但无法解决问题。

router.get('/userstats/:id', async (req, res) => {
    const { id } = req.params;
    const conn = await connection(dbConfig).catch(e => {}) 
    var results = await query(conn, 'SELECT * FROM historical_contract_prediction WHERE contractId = ?;', [id]).catch(console.log);
    const error = {
        "error": `This ${id} contractId does not exist! Are you lost check our documentation!`
    }

    var i = 0;
    var last = [];
    var finalResults = [];

    var len = results.length;

    x = 0;
    while(x<len) {
        last = results[x];
        if(results[x+1] == undefined) { 
            break;
        }

        var start = new Date(results[x]["date"]);
        var end = new Date(results[x+1]["date"]);

        while(start<end) {
            last["date"] = new Date(start);
            finalResults[i++] = last;
            var newDate = start.setDate(start.getDate() + 1);
            start = new Date(newDate);
        }    
        x++;
    }

    if(results == '') res.json(error);

    res.set({ 'content-type': 'application/json; charset=utf-8' });
    res.send( {finalResults} );
});

各种结果：

    {
      "contractId": 3573365,
      "date": "2020-03-29T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-03-31T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-02T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-05T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-06T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-07T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    }

var finalResults：

    {
      "contractId": 3573365,
      "date": "2020-03-29T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-03-31T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-03-31T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-02T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-02T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-05T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-05T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-05T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    },
    {
      "contractId": 3573365,
      "date": "2020-04-06T03:00:00.000Z",
      "concludedWeight": 1,
      "cancelledWeight": 0,
      "calculatedStatus": "Concluded"
    }

当我在while循环中使用console.log时，finalResults变量为我提供了正确的结果。但是当发回邮件时，这些日期给了我错误的日期。

我对finalResults的期望：

{
  "contractId": 3573365,
  "date": "2020-03-29T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-03-30T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-03-31T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-04-01T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-04-02T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-04-03T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-04-04T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-04-05T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
},
{
  "contractId": 3573365,
  "date": "2020-04-06T03:00:00.000Z",
  "concludedWeight": 1,
  "cancelledWeight": 0,
  "calculatedStatus": "Concluded"
}

Answer 1

尝试实现异步等待。我认为错误的部分是：

while(start<end) {
        last["date"] = new Date(start);
        finalResults[i++] = last;
        var newDate = start.setDate(start.getDate() + 1);
        start = new Date(newDate);
    }    
    x++;

仅当开始小于结束时才执行。但是您的console.log会在循环之前打印结果。

NodeJS-填写缺失的日期

1 个答案: