使用apache poi循环数组数据

Question

我是java和Apache POI的初学者.

所以现在我想要实现的是我想在Days列下逐行(垂直)循环数组:

公众假期日期日期类

public static void main(String[] args) {

    XSSFWorkbook workbook = new XSSFWorkbook();

    XSSFSheet sheet = workbook.createSheet();

    String[] days = { "SU", "MO", "TU", "WED", "TH", "FR", "SA" };

    Row row = sheet.createRow(0);
    row.createCell(0).setCellValue("Public Holidays");
    row.createCell(1).setCellValue("Days");
    row.createCell(2).setCellValue("Date");
    row.createCell(3).setCellValue("Class");

    int numRows = sheet.getFirstRowNum();
    int numCols = sheet.getRow(0).getLastCellNum();

    for (int i = 1; i < 7; i++) {

        Row row2 = sheet.createRow(i);
        Cell cell = row.createCell(1);
        cell.setCellValue(days);

    }

    try {

        FileOutputStream out = new FileOutputStream(new File("C:xx"));

        workbook.write(out);

        out.close();

        System.out.print("Sucess, please check the file");

    } catch (Exception e) {
        e.printStackTrace();
    }

}

我得到的错误是:

参数类型Cell中的方法setCellValue(double)不适用于参数(String [])

请帮我解决这个阵列问题.

Answer 1

The method setCellValue(double) in the type Cell is not applicable for the arguments (String[])

您试图传递一个声明为的字符串数组

String[] days = { "SU", "MO",...};

到setCellValue()方法。没有setCellValue()接受String[]参数的重载变体。我想你的意思是

cell.setCellValue(days[i-1]);

该错误消息有点令人困惑，因为在尝试解析该方法时，它选择了一种（采用 的方法double）在消息中指示。