使用Java POI在Excel中打印數據

Question

我正在從SQL表中獲取數據。 sql表的行取決於ID，因此此處的操作行不固定，可能有所不同。 其中xxxx行是固定的（單行）。 我想在Excel文件中以這種格式打印輸出

Column1     Column2             Column3             Column4         Column5
NAME        completedWorkflows  runningWorkflows    failedWorkflows cancelledWorkflows
xxxx        2233                1312                123             1232

ONE BLANK ROW(In below table Rows are not fixed it may change depends on data)

NAME        completedWorkflows  runningWorkflows    failedWorkflows cancelledWorkflows
Action 1    12365               54545               55              788
Action 2    54545               88                  88              4   
Action 3    97                  123                 2               87
Action 4    788                 24                  24              274

下面是我的代碼。 打印XXXX行的值。 尚未為動作1 ... 4編寫代碼。 為此需要您的幫助。 我應該在哪里添加哪些語句以獲得高於輸出的輸出？ TIA

stmt = conn.createStatement();
String completedWorkflows = "Some Query";
String runningWorkflows = "Some Query";
String failedWorkflows = "Some Query";
String cancelledWorkflows = "Some Query";
String cancellingWorkflows = "Some Query";
String actionsData = "Some Query";

            ResultSet rs = stmt.executeQuery(completedWorkflows);
            rs.next();
            int totalCompletedWF = rs.getInt("COMPLETED_WF");

            rs = stmt.executeQuery(runningWorkflows);
            rs.next();
            int totalRunningWF = rs.getInt("RUNNING_WF");

            rs = stmt.executeQuery(failedWorkflows);
            rs.next();
            int totalFailedWF = rs.getInt("FAILED_WF");

            rs = stmt.executeQuery(cancelledWorkflows);
            rs.next();
            int totalCancelleddWF = rs.getInt("CANCELLED_WF");

            rs = stmt.executeQuery(cancellingWorkflows);
            rs.next();
            int totalCancellingdWF = rs.getInt("CANCELLING_WF");

            // Fetching Action data. THIS QUERY RETURNS DYNAMIC NUMBER OF ROWS WITH DETAILS
            rs = stmt.executeQuery(actionsData);
            rs.next();
            String actionName = rs.getString("NAME");
            int actionWaiting = rs.getInt("WAITING");
            int actionRunning = rs.getInt("RUNNING");
            int actionFailed = rs.getInt("FAILED");
            int actionCancelled = rs.getInt("CANCELLED");
            int actionCompleted = rs.getInt("COMPLETED");

            // Excel file generation code
            HSSFWorkbook workbook = new HSSFWorkbook();
            HSSFSheet sheet = workbook.createSheet("Results");

            CellStyle style = workbook.createCellStyle();
            Font font = workbook.createFont();
            font.setFontHeightInPoints((short) 11);
            font.setFontName(HSSFFont.FONT_ARIAL);
            font.setBoldweight(HSSFFont.COLOR_NORMAL);
            font.setBold(true);
            font.setColor(HSSFColor.BLACK.index);

            style.setFont(font);
            style.setFillForegroundColor(IndexedColors.TURQUOISE.getIndex());
            style.setFillPattern(CellStyle.SOLID_FOREGROUND);
            style.setAlignment(style.ALIGN_JUSTIFY);
            style.setBorderBottom(style.BORDER_THIN);
            style.setBorderLeft(style.BORDER_THIN);
            style.setBorderTop(style.BORDER_THIN);
            style.setWrapText(true);
            style.setVerticalAlignment(CellStyle.ALIGN_CENTER);

            HSSFRow row = sheet.createRow(1);
            HSSFRow rowhead = sheet.createRow((short) 0);
            rowhead.setRowStyle(style);

            HSSFCell cell1 = rowhead.createCell(1);
            cell1.setCellStyle(style);
            cell1.setCellValue("Completed Workflows");
            row.createCell(1).setCellValue(totalCompletedWF);

            HSSFCell cell2 = rowhead.createCell(2);
            cell2.setCellStyle(style);
            cell2.setCellValue("Running Workflows");
            row.createCell(2).setCellValue(totalRunningWF);

            HSSFCell cell3 = rowhead.createCell(3);
            cell3.setCellStyle(style);
            cell3.setCellValue("Failed Workflows");
            row.createCell(3).setCellValue(totalFailedWF);

            HSSFCell cell4 = rowhead.createCell(4);
            cell4.setCellStyle(style);
            cell4.setCellValue("Cancelled Workflows");
            row.createCell(4).setCellValue(totalCancelleddWF);

            HSSFCell cell5 = rowhead.createCell(5);
            cell5.setCellStyle(style);
            cell5.setCellValue("Cancelling Workflows");
            row.createCell(5).setCellValue(totalCancellingdWF);

            sheet.autoSizeColumn(0);
            sheet.autoSizeColumn(1);
            sheet.autoSizeColumn(2);
            sheet.autoSizeColumn(3);
            sheet.autoSizeColumn(4);
            sheet.autoSizeColumn(5);

            // Action results set to Excel sheet

            FileOutputStream fileOut = new FileOutputStream(fileLocation + "\\Results.xls");
            workbook.write(fileOut);
            fileOut.close();

            rs.close();
            stmt.close();
            conn.close();

非常感謝。

Answer 1

為了使您的代碼包含動作1到4，您需要遍歷數據（使用rs = stmt.executeQuery(actionsData); ）並進行相應的編寫。

在這種情況下，建議您遵循以下准則來重構代碼：

1. 創建工作簿。
2. 創建工作表。
3. 獲取您的數據。
4. 循環瀏覽數據（直到到達最后一條記錄）。
   • 在遍歷數據時，請執行以下操作：
     • 在工作表上創建一個新行。
     • 用數據填充所創建行中的單元格。
     • 將樣式應用於單元格。
5. 將所做的更改寫入文件。