Question

我编写了一个程序来创建和编写Excel工作表，将其关闭，然后在不久后访问它。但是，java总是给我同样的jxl.read.biff.BiffException: The input file was not found记录器消息-即使在给定的文件路径中确实存在一个文件。此外，当我尝试直接在Excel中打开文件时，收到消息：“'filename.xls'的文件格式和扩展名不匹配。该文件可能已损坏或不安全。”我假设这意味着Excel期望使用.xlsx文件，而接收的是.xls文件，因此我认为我需要做的最初是使用Windows资源管理器 realizing创建该文件是.xls。我是否以这种思路朝着正确的方向前进？

这是我的代码

创建文件：

private void createEmptyScore() {
    xlsPath = path + "\\" + xlsName + ".xls";
    newXls = new File(xlsPath);
    try {
        WritableWorkbook wwb = Workbook.createWorkbook(newXls);
        wwb.createSheet("Sheet1", 0);
        newXls.createNewFile();
        wwb.write();
        wwb.close();
    } catch (Exception ex) {
        Logger.getLogger(NewScoreMenu.class.getName()).log(Level.SEVERE, null, ex);
    }
}

从文件访问数据：

String cellData() throws Exception {
    Workbook wb = Workbook.getWorkbook(xlsFile); // jxl.read.biff.BiffException HERE
    Sheet sheet = wb.getSheet(0);
    int scoreColumn = sheet.getColumns() - 1;
    return sheet.getCell(col, row).getContents();
}

更改单元格数据（giveScore是JButton； choiceScore是JComboBox）：

private void giveScoreActionPerformed(java.awt.event.ActionEvent evt) {
    String score = chooseScore.getSelectedItem().toString();
    try {
        scoreSet(score);
        currScore.setText("SCORE = " + cellData());    // See cellData() above
    } catch (Exception ex) {
        Logger.getLogger(EditSkeleton.class.getName()).log(Level.SEVERE, null, ex);
    }
}

public void scoreSet(String score) throws Exception {
    Workbook wb = Workbook.getWorkbook(xlsFile);
    WritableWorkbook copy = Workbook.createWorkbook(xlsFile, wb);
    WritableSheet sheetToEdit = copy.getSheet(0);
    WritableCell cell;
    Label l = new Label(sheetToEdit.getColumns() - 1, imgPos + 1, score);
    cell = (WritableCell) l;
    sheetToEdit.addCell(cell);

    copy.write(); 
    copy.close();
    wb.close();
}

谢谢！

Answer 1

我尝试复制您的代码并进行一些更改。但是让我问一下，您在哪里更新分数？在创建文件时，您只创建了一个空白工作表，然后在return语句中，您尝试获取给定文件中第一个excel工作表的特定单元格的内容。

public class ExcelWriter {
    private static String xlsPath;
    private static String path;
    private static String xlsName;
    private static File newXls;
    private static void createEmptyScore() {
        xlsPath = path + "\\" + xlsName + ".xls";
        newXls = new File(xlsPath);
        try {
            WritableWorkbook wwb = Workbook.createWorkbook(newXls);
            wwb.createSheet("Sheet1", 0);
            newXls.createNewFile();
            wwb.write();
            wwb.close();
        } catch (Exception ex) {
            System.out.println("Error: " + ex.getMessage());
        }
    }

    private static String cellData() throws Exception {
        Workbook wb = Workbook.getWorkbook(newXls); // jxl.read.biff.BiffException HERE
        Sheet sheet = wb.getSheet(0);
        //what is this for? 
        int scoreColumn = sheet.getColumns() - 1;
        //Seems you're trying to use col, and row for the contents
        //but you did not specify the values for these variables. 
        //return sheet.getCell(col, row).getContents();
        return sheet.getCell(0, 0).getContents();
    }

    public static void main(String[] args) throws Exception{
        //Declare the path and filename, You did not specify this
        //I created a dummy folder for this one
        path = "D:/test";
        xlsName = "score";
        createEmptyScore();
        //This would return an ArrayIndexOutOfBoundsException because the
        //Excel sheet is empty
        System.out.println(cellData());
    }

}

jxl-“文件格式和扩展名不匹配”

1 个答案: