UnhandledPromiseRejectionWarning:错误:无效地址:Aundefined.怎么处理？

Question

我循环Sheet 1一个Excel文件,其中包含3列,每行包含100行数据(字符串),并将一行中的每个单元格与行中的组合进行比较Sheet 2.

检查应该Sheet 1逐行开始,查看行中每个单元格的值是否与行中的任何位置匹配Sheet 2.如果检查失败,则应停止对该行的进一步检查,并开始检查下一行.Sheet 1无法匹配的单元格应标记为红色.

我下面的代码接近我需要的代码,但是如果Sheet 1(Eg Row 1: B2 and B3)中有2个或更多个单元格与任何行中的任何内容都不匹配,则会抛出错误Sheet 2.

错误:

(node:9040) UnhandledPromiseRejectionWarning: Error: Invalid Address: Aundefined
    at Object.validateAddress (C:\node_modules\exceljs\dist\es5\utils\col-cache.js:86:13)
    at new module.exports (C:\node_modules\exceljs\dist\es5\doc\cell.js:29:12)
    at module.exports.getCellEx (C:\node_modules\exceljs\dist\es5\doc\row.js:55:14)
    at module.exports.getCell (C:\node_modules\exceljs\dist\es5\doc\row.js:72:41)
    at C:\so.js:56:61
    at C:\node_modules\exceljs\dist\es5\doc\worksheet.js:370:11
    at Array.forEach (<anonymous>)
    at module.exports.eachRow (C:\node_modules\exceljs\dist\es5\doc\worksheet.js:368:18)
    at C:\so.js:16:19
    at <anonymous>
(node:9040) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:9040) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

示例数据:

表1:

| COL A | COL B  | COL C  |
|-------|--------|--------|
| bob   | one    | silver |
| bob   | eleven | blue   |
| bob   | eleven | red    |
| bob   | eleven | red    |
| bob   | one    | red    |
| bob   | eight  | red    |
| bob   | eight  | red    |
| bob   | eight  | red    |
| terry | seven  | yellow |
| terry | seven  | yellow |
| terry | seven  | gold   |

表2:

| COL A | COL B  | COL C  |
|-------|--------|--------|
| bob   | eleven | blue   |
| bob   | eleven | red    |
| bob   | eight  | red    |
| terry | seven  | yellow |
| terry | seven  | orange |

根据该实例的数据,应该有三个小区(B1,B5和C11)以红色标示Sheet 1的new.xlsx.例如

这是一个关于如何进行检查的方案示例PDF:

码:

// Import the library
var Excel = require('exceljs'),
    moment = require('moment'),
    // Define Excel filename
    ExcelFile = 'so.xlsx',
    // Read from the file
    workbook = new Excel.Workbook();

workbook.xlsx.readFile(ExcelFile)
    .then(function()
    {
        // Use workbook
        var dataSheet = workbook.getWorksheet('Sheet 1'),
            masterSheet = workbook.getWorksheet('Sheet 2');

        dataSheet.eachRow({ includeEmpty: false }, function(dataRow, dataRowNumber)
        {
            var dataRowCells =
                {
                    dataCell1: dataRow.getCell('A'),
                    dataCell2: dataRow.getCell('B'),
                    dataCell3: dataRow.getCell('C')
                },
                isdataRowOK = false,
                oneOfBestMasterRowNumber,
                cellNames = ['A','B','C'];

            masterSheet.eachRow({ includeEmpty: false }, function(masterRow, masterRowNumber)
            {
                if(!isdataRowOK)
                {
                    var numberOfGoodCellsInRow = 0;

                    for(var i = 1; i < 4; i++)
                        if(dataRowCells['dataCell' + i].value === masterRow.getCell(cellNames[i-1]).value)
                            numberOfGoodCellsInRow++;

                    if(numberOfGoodCellsInRow == 2)
                        oneOfBestMasterRowNumber = masterRowNumber;

                    if(numberOfGoodCellsInRow == 3)
                        isdataRowOK = true
                }
            });


            if(!isdataRowOK)
            {
                var masterRowForCheck = masterSheet.getRow(oneOfBestMasterRowNumber);

                for(var i = 1; i < 4; i++)
                {
                    var dataCell = dataRowCells['dataCell' + i];
                    if(dataCell.value !== masterRowForCheck.getCell(cellNames[i-1]).value)
                    {
                        // Mark this failed cell as color red
                        dataCell.style = Object.create(dataCell.style); // Shallow-clone the style, break references
                        dataCell.fill = {type: 'pattern', pattern:'solid', fgColor:{argb:'FA8072'}}; // Set background
                    }
                }

            }
        });

        return workbook.xlsx.writeFile('new.xlsx');
    });

Answer 1

此错误的来源是来自第二行的调用:

if(!isdataRowOK)

在这个地方变量oneOfBestMasterRowNumber应该不是undefined如果行中的3个单元格是坏的,因为在它之后如果getRow('undefined')那么我们有一个错误.因为它,我们现在检查它,如下所示,并为它写入值1(1.行号),因为在这种情况下无关紧要.

if(oneOfBestMasterRowNumber == void 0) //void 0 - undefined
    oneOfBestMasterRowNumber = 1;

我们应该更改一个地方:而不是代码行:

if(numberOfGoodCellsInRow == 2)
    oneOfBestMasterRowNumber = masterRowNumber;

我们应该写行:

if(numberOfGoodCellsInRow > numberOfGoodCellsInBestRow)
{
    numberOfGoodCellsInBestRow = numberOfGoodCellsInRow;
    oneOfBestMasterRowNumber = masterRowNumber;
}

因为行中不仅一个单元格可能不好.我们现在也有新的变量numberOfGoodCellsInBestRow.

我认为如果行中的两个或三个单元格被标记,如果它们是坏的,那就更好了,但是如果你只想要行中的一个单元格,那么你可以break;在单元格着色后取消注释.

另请参阅以下代码中的我的评论:

// Import the library
var Excel = require('exceljs'),
    moment = require('moment'),
    // Define Excel filename
    ExcelFile = 'so.xlsx',
    // Read from the file
    workbook = new Excel.Workbook();

workbook.xlsx.readFile(ExcelFile)
    .then(function()
    {
        // Use workbook
        var dataSheet = workbook.getWorksheet('Sheet 1'),
            masterSheet = workbook.getWorksheet('Sheet 2');

        dataSheet.eachRow({ includeEmpty: false }, function(dataRow, dataRowNumber)
        {
            var dataRowCells =
                {
                    dataCell1: dataRow.getCell('A'),
                    dataCell2: dataRow.getCell('B'),
                    dataCell3: dataRow.getCell('C')
                },
                isdataRowOK = false,
                oneOfBestMasterRowNumber,
                cellNames = ['A','B','C'],
                numberOfGoodCellsInBestRow = 0;

            masterSheet.eachRow({ includeEmpty: false }, function(masterRow, masterRowNumber)
            {
                if(!isdataRowOK)
                {
                    var numberOfGoodCellsInRow = 0;

                    for(var i = 1; i < 4; i++)
                        if(dataRowCells['dataCell' + i].value === masterRow.getCell(cellNames[i-1]).value)
                            numberOfGoodCellsInRow++;

                    //here we detect if 1 or 2 cells are bad
                    if(numberOfGoodCellsInRow > numberOfGoodCellsInBestRow)
                    {
                        numberOfGoodCellsInBestRow = numberOfGoodCellsInRow;
                        oneOfBestMasterRowNumber = masterRowNumber;
                    }

                    if(numberOfGoodCellsInRow == 3)
                        isdataRowOK = true
                }
            });

            //here was error source: oneOfBestMasterRowNumber
            //should be not undefined if 3 cells in row are bad
            if(oneOfBestMasterRowNumber == void 0)//void 0 - undefined
                oneOfBestMasterRowNumber = 1;

            if(!isdataRowOK)
            {
                //here was error place: if getRow('undefined') then was error
                var masterRowForCheck = masterSheet.getRow(oneOfBestMasterRowNumber);

                for(var i = 1; i < 4; i++)
                {
                    var dataCell = dataRowCells['dataCell' + i];
                    if(dataCell.value !== masterRowForCheck.getCell(cellNames[i-1]).value)
                    {
                        // Mark this failed cell as color red
                        dataCell.style = Object.create(dataCell.style); // Shallow-clone the style, break references
                        dataCell.fill = {type: 'pattern', pattern:'solid', fgColor:{argb:'FA8072'}}; // Set background
                        //break; uncomment this if you want only one cell as color red marked in the row
                    }
                }

            }
        });

        return workbook.xlsx.writeFile('new.xlsx');
    });
}

可视化示例

我已经将Node.js代码翻译成了客户端JavaScrpt代码,通过检查下面代码片段中的两个不同数据集(Excel表格的模仿)来演示它:

function checkDataset(obj)
{
    var radios = obj.parentNode.elements['dataset'],
        dataSetNumber,
        i = radios.length;

    for(; i--;)
        if(radios[i].checked)
        {
            dataSetNumber = i;
            break
        }

    var dataSheet = xlsFile['data' + dataSetNumber],
        masterSheet = xlsFile['master' + dataSetNumber];

    dataSheet.forEach(function(dataRow, dataRowIndex)
    {
        var dataRowCells =
            {
                dataCell1: dataRow.A,
                dataCell2: dataRow.B,
                dataCell3: dataRow.C
            },
            isdataRowOK = false,
            oneOfBestMasterRowIndex,
            cellNames = ['A','B','C'],
            numberOfGoodCellsInBestRow = 0;

        masterSheet.forEach(function(masterRow, masterRowIndex)
        {
            if(!isdataRowOK)
            {
                var numberOfGoodCellsInRow = 0;

                for(var i = 1; i < 4; i++)
                    if(dataRowCells['dataCell' + i].value === masterRow[cellNames[i-1]].value)
                        numberOfGoodCellsInRow++;

                //here we detect if 1 or 2 cells are bad
                if(numberOfGoodCellsInRow > numberOfGoodCellsInBestRow)
                {
                    numberOfGoodCellsInBestRow = numberOfGoodCellsInRow;
                    oneOfBestMasterRowIndex = masterRowIndex;
                }

                if(numberOfGoodCellsInRow == 3)
                    isdataRowOK = true
            }
        });

        //oneOfBestMasterRowIndex should be not undefined if 3 cells in row are bad
        if(oneOfBestMasterRowIndex == void 0)//void 0 - undefined
            oneOfBestMasterRowIndex = 0;

        if(!isdataRowOK)
        {
            var masterRowForCheck = masterSheet[oneOfBestMasterRowIndex];

            for(var i = 1; i < 4; i++)
            {
                var dataCell = dataRowCells['dataCell' + i];
                if(dataCell.value !== masterRowForCheck[cellNames[i-1]].value)
                {
                    // Mark this failed cell as color red
                    dataCell.bgColor = 'red';
                    //break; uncomment this if you want only one cell as color red marked in the row
                }
            }

        }
    });

    var table = '<table border="1"><tr style="background:#00a;color:#fff">'
                + '<th>A</th><th>B</th><th>C</th></tr>';

    dataSheet.forEach(function(dataRow, dataRowIndex)
    {
        table += '<tr>';
        for(var i in dataRow)
            table += '<td bgcolor="' + (dataRow[i].bgColor ? 'red' : '')
                        + '">' + dataRow[i].value + '</td>';

        table += '</tr>';
    });
    document.write(table + '</table>');
}

function cells(strValues)
{
    var v = strValues.split('\t');
    return{A: {value: v[0]}, B: {value: v[1]}, C: {value: v[2]}}
}

var xlsFile =
{
    //Dataset 1:
    data0:
    [
        cells('bob	sacsac	sxcsc'),
        cells('sacfbrb	eleven	blue'),
        cells('ascasc	one	red'),
        cells('tyjytn	one	red'),
        cells('ascsac	one	red'),
        cells('terry	elf	yellow'),
        cells('terry	seven	elf'),
        cells('terry	elf	elf'),
        cells('terry	elf	elf'),
        cells('terry	seven	yellow'),
        cells('terry	elf	elf'),
        cells('terry	seven	orange'),
        cells('terry	seven	yellow'),
        cells('santa	mary	jane'),
        cells('bob	zero	mauve'),
        cells('bob	one	silver'),
        cells('bob	eleven	blue'),
        cells('bob	eleven	red'),
        cells('bob	eleven	red'),
        cells('bob	one	red'),
        cells('bob	eight	red'),
        cells('bob	eight	red'),
        cells('bob	eight	red'),
        cells('terry	seven	yellow'),
        cells('terry	seven	yellow'),
        cells('terry	seven	gold')
    ],
    master0:
    [
        cells('bob	eleven	blue'),
        cells('bob	eleven	red'),
        cells('bob	eight	red'),
        cells('terry	seven	yellow'),
        cells('bob	seven	yellow'),
        cells('terry	seven	orange'),
        cells('tiger	one	red')
    ],


    //Dataset 2:
    data1:
    [
        cells('bob	one	blue'),
        cells('bob	eleven	blue'),
        cells('bob	eleven	red'),
        cells('bob	eleven	red'),
        cells('bob	one	red'),
        cells('bob	eight	red'),
        cells('bob	eight	red'),
        cells('bob	eight	red'),
        cells('terry	seven	yellow'),
        cells('terry	seven	yellow'),
        cells('terry	seven	gold')
    ],
    master1:
    [
        cells('bob	eleven	blue'),
        cells('bob	eleven	red'),
        cells('bob	eight	red'),
        cells('terry	seven	yellow'),
        cells('terry	seven	orange')
    ]
};

<form method="post" action="#">
    <p><b>Which dataset do you want check?</b></p>
    <label><input type="radio" name="dataset">Dataset 1</label><br>
    <label><input type="radio" name="dataset" checked>Dataset 2</label><br><br>
    <input type="button" value="Check it" onclick="checkDataset(this)">
</form>

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