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我正在尝试将数据写入不同工作表中的同一个 excel 文件，下面是我在这里尝试的代码，只有一个工作表正在创建，并且该工作表中的数据正在更新，新工作表名称覆盖旧工作表。在这里，我用 2 个不同的工作表名称调用调用方法两次，当我们从第一次调用时，数据需要在 sheet1 中更新，而第二次调用数据需要在 sheet2 中更新，但在此代码中，只有 sheet2 正在创建和数据更新。

 public static void call(Map<String, String[]> dataListLMS_IPS, String sheet)
    {
        try {
            String filePath = "C:\\Users\\PATIV25\\Downloads\\APEX UPEX.xlsx";
            File theDir = new File(filePath);
            String filename = theDir.toString();
            FileOutputStream fileOut = new FileOutputStream(filename);
            fileOut.close();
            XSSFWorkbook workbook = new XSSFWorkbook();
            XSSFSheet spreadsheet = workbook.createSheet(sheet);
            XSSFRow row;
            Set<String> keyid = dataListLMS_IPS.keySet();
            int rowid = 0;
            // writing the data into the sheets...
            CellStyle style = workbook.createCellStyle();
            style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
            for (String key : keyid) {

                row = spreadsheet.createRow(rowid++);
                String[] i = dataListLMS_IPS.get(key);
                int cellid = 0;
                int a = 0;
                for (String obj : i) {
                    Cell cell = row.createCell(cellid++);
                    cell.setCellValue(obj);
                    if (rowid != 1) {
                        if (i[2].equals(i[6]) && i[3].equals(i[7])) {
                            style.setFillForegroundColor(IndexedColors.BRIGHT_GREEN.getIndex());
                            cell.setCellValue(obj);
                            if (a == 2 || a == 3 || a == 6 || a == 7)
                                cell.setCellStyle(style);
                            a++;
                        }
                    }
                }
            }
            // .xlsx is the format for Excel Sheets...
            // writing the workbook into the file...
            FileOutputStream out = new FileOutputStream(theDir);
            workbook.write(out);
            out.close();
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
    public static void main(String[] arg) throws Exception {

        Map<String, String[]> data = new LinkedHashMap<>();
        data.put("A", new String[]{"ACC NO: ", "REPORT TYPE", "PAYMENTID", "AMOUNT", "REPORT TYPE", "PAYMENTID", "AMOUNT", "RESULT"});
        data.put("v", new String[]{"ACC NO: ", "REPORT TYPE", "PAYMENTID", "AMOUNT", "REPORT TYPE", "PAYMENTID", "AMOUNT", "RESULT"});

        call(data, "sheet1");
        call(data, "sheet2");
    }
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1 回答 1

0

现有的逻辑是不正确的。如果要调用两次调用方法，则需要将文件和工作表的创建分成不同的部分。尝试这个：

public static void call(Map<String, String[]> dataListLMS_IPS, FileOutputStream fileOut) throws IOException
    {
        
            XSSFWorkbook workbook = new XSSFWorkbook();
            
            Set<String> keyid = dataListLMS_IPS.keySet();
            int rowid = 0;
            // writing the data into the sheets...
            CellStyle style = workbook.createCellStyle();
            style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
            
            for (String key : keyid) {
                XSSFSheet spreadsheet = workbook.createSheet(key);
                XSSFRow row;
                row = spreadsheet.createRow(0);
                String[] i = dataListLMS_IPS.get(key);
                int cellid = 0;
                int a = 0;
                for (String obj : i) {
                    XSSFCell cell = row.createCell(cellid++);
                    cell.setCellValue(obj);
                    if (rowid != 1) {
                        if (i[2].equals(i[6]) && i[3].equals(i[7])) {
                            style.setFillForegroundColor(IndexedColors.BRIGHT_GREEN.getIndex());
                            cell.setCellValue(obj);
                            if (a == 2 || a == 3 || a == 6 || a == 7)
                                cell.setCellStyle(style);
                            a++;
                        }
                    }
                }
            }
            workbook.write(fileOut);
        
    }
    public static void main(String[] arg) throws Exception {

        Map<String, String[]> data = new LinkedHashMap<>();
        data.put("A", new String[]{"ACC NO: ", "REPORT TYPE", "PAYMENTID", "AMOUNT", "REPORT TYPE", "PAYMENTID", "AMOUNT", "RESULT"});
        data.put("v", new String[]{"ACC NO: ", "REPORT TYPE", "PAYMENTID", "AMOUNT", "REPORT TYPE", "PAYMENTID", "AMOUNT", "RESULT"});
        FileOutputStream fileOut = null;
        try {
            String filePath = "d:\\APEX UPEX.xlsx";
            File theDir = new File(filePath);
            String filename = theDir.toString();
            fileOut = new FileOutputStream(filename);
        
            call(data,  fileOut);
            call(data, fileOut);
        
        }
        catch (Exception e)
        {
            e.printStackTrace();
        } finally {
            if (fileOut != null)
                fileOut.close();
        }
    }

它将在同一个 Excel 文件中创建 2 张工作表。

于 2021-10-27T07:51:44.190 回答