Question

我在Excel中有四行，第一行用于标题，三行中的其余行都有值。我输入代码的方式是避免标头，而是读取仅包含值的行。但是，与其仅获取三行，不如下面提供一个附加的空值行，为什么我在获取空值时错过了任何东西？找到代码和错误消息。

消息

通过：testShipment（“孟买”，“纽约”，“ 18000”，“ 10000”，“ 20000”）

通过：testShipment（“孟买”，“科钦”，“ 2000”，“ 30000”，“ 5000”）

通过：testShipment（“ Cochin”，“ Farah”，“ 16000”，“ 18000”，“ 19000”）

失败：testShipment（null，null，null，null，null）

代码

int TotalCol = sh.getRow(0).getLastCellNum();
    int Totalrows = sh.getLastRowNum()+1;
    String[][] data = new String[Totalrows][TotalCol];

    DataFormatter formatter = new DataFormatter(); // creating formatter using the default locale

    for (int i = 1; i < Totalrows; i++) {
        Row r = sh.getRow(i);
        for (int j = 0; j < TotalCol; j++) {
            Cell c = r.getCell(j);
            try {
                if (c.getCellType() == Cell.CELL_TYPE_STRING) {

                    String j_username = formatter.formatCellValue(c);
                    data[i][j] = j_username;
                    System.out.println("data[i][j]" + data[i][j]);
                } else {
                    data[i][j] = String.valueOf(c.getNumericCellValue());
                    String j_username = formatter.formatCellValue(c);
                    data[i][j] = j_username;
                    System.out.println("data[i][j] numeric val" + data[i][j]);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

Answer 1

尝试使用以下代码，例如检查空条件

for (int k = 1; k <= totalRows; k++) {
    String testCaseID = sheet.getRow(k).getCell(0).getStringCellValue();

    if (testCaseID.equalsIgnoreCase(tcID)) {

        for (int l = 1; l < totalCols; l++) {

            String testData_FieldName = sheet.getRow(0).getCell(l).getStringCellValue();

            if (testData_FieldName.equalsIgnoreCase(header)) {
                cell = sheet.getRow(k).getCell(l);
                if (cell != null) {
                    switch (cell.getCellType()) {
                        case Cell.CELL_TYPE_NUMERIC:// numeric value in excel
                        result = cell.getNumericCellValue();
                    break;

                    case Cell.CELL_TYPE_STRING: // string value in excel
                        result = cell.getStringCellValue();
                        break;

                    case Cell.CELL_TYPE_BOOLEAN: // boolean value in excel
                        result = cell.getBooleanCellValue();
                        break;

                    case Cell.CELL_TYPE_BLANK: // blank value in excel
                        result = cell.getStringCellValue();
                        break;

                    case Cell.CELL_TYPE_ERROR: // Error value in excel
                        result = cell.getErrorCellValue() + "";
                        break;

                    default:
                        throw new CustomException("The cell data type is invalid");
                        }
                }
            }
        }
        k = totalRows + 1;
    }
}

Answer 2

您需要更改数据数组声明部分或Totalrows计算部分。当前，您已经创建了4行对象，并且仅分配了3行值，因此第4行值保留为空值。

String[][] data = new String[Totalrows][TotalCol];

在字符串数组中，您将不会保留标头值，而仅存储值。因此，请使用以下任一选项修改您的代码（我建议您使用选项1）

选项1： 从Totalrows变量中删除+1，并在第一个for循环中添加相等条件

//Removed the +1
int Totalrows = sh.getLastRowNum();
String[][] data = new String[Totalrows][TotalCol];

DataFormatter formatter = new DataFormatter(); // creating formatter using the default locale

//Condition is modified as i <= Totalrows
for (int i = 1; i <= Totalrows; i++) {

选项2： 更改data [] []声明部分

int Totalrows = sh.getLastRowNum()+1;
String[][] data = new String[Totalrows-1][TotalCol];

Answer 3

这是有效的代码，感谢大家的帮助！

int TotalCol = sh.getRow(0).getLastCellNum();
    int Totalrows = sh.getLastRowNum()+1;
//Entering minus one(-1) during data declaration ignores the first row as first row is a header
    String[][] data = new String[Totalrows-1][TotalCol];

    DataFormatter formatter = new DataFormatter(); // creating formatter using the default locale

    for (int i = 1; i <Totalrows; i++) {
        Row r = sh.getRow(i);
        for (int j = 0; j < TotalCol; j++) {
            Cell c = r.getCell(j);
            try {
                if (c.getCellType() == Cell.CELL_TYPE_STRING) {

                    String j_username = formatter.formatCellValue(c);
//Adding minus on(data[i-1]) helps to read the first cell which is (0,1), in this case (0,1) would not read the header since we have skipping the header from the table in the previous step on top, therefore the actual table starts from the second row.
                    data[i-1][j] = j_username;
                    System.out.println("data[i-1][j]" + data[i-1][j]);
                } else {
                    data[i-1][j] = String.valueOf(c.getNumericCellValue());
                    String j_username = formatter.formatCellValue(c);
                    data[i-1][j] = j_username;
                    System.out.println("data[i-1][j] numeric val" + data[i-1][j]);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

”

为什么在硒apache POI中使用空值将最后一个空行作为附加测试提取了

3 个答案: