div class="one_answers">
private String[][] data;
// to read from excel file
public void readFile() throws IOException {
// Path to the excel file
// File datafile = new File("C:\Users\atomar\Documentstest.xlsx");
// A Buffered File Input Stream to read the data
FileInputStream f = new FileInputStream(
"C:\Users\atomar\Documents\test.xlsx");
System.out.println("file found");
// InputStream fis = new BufferedInputStream(new FileInputStream("f"));
// We create a workbook which represents the excel file
XSSFWorkbook book = new XSSFWorkbook(f);
// Next a sheet which represents the sheet within that excel file
XSSFSheet sheet = book.getSheet("Sheet1");
// No of rows in the sheet
int rowNum = sheet.getLastRowNum() + 1;
System.out.println("rowNum");
// No of columns in the sheet
int colNum = sheet.getRow(0).getLastCellNum();
// A Two dimensional array of Strings which represents the data in the
// sheet
data = new String[rowNum][colNum];
{
for (int i = 0; i < rowNum; i++) {
// Get the row
XSSFRow row = sheet.getRow(i);
for (int j = 0; j < colNum; j++) {
// Get the columns or cells for the first row and keep
// looping
// for the other rows
XSSFCell cell = row.getCell(j);
// Make a call to the method cellToString which actually
// converts the cell contents to String
data[i][j] = cellToString(cell);
// data[i][j] = value;
// Here is where you write the logic to handle the data.I am
// just printing out the contents here.
//System.out.println("The value is " + data[i][j]);
}
}
在这里我调用该函数
public void InterestedParty() throws InterruptedException {
try {
readFile();
} catch (IOException e1) {
}
}
收到错误：不支持此类型的单元格我从输入 excel 文件中删除了两行数据，然后在它正常工作之前启动。但是现在我已经完全删除了这些行，另一个问题是<</p>
如果没有数据，XSSFCell将被null.检查是否null。调用cellToString()方法后。
XSSFCell cell = row.getCell(j);
if(cell != null) {
data[i][j] = cellToString(cell);
} else {
// if you would like to set value when cell is null
row.createCell(j).setCellValue(your value);
}
您可以有一行包含数据，接下来是空行，然后是另一行包含数据。如果未定义，则可以将中间行视为 null，所以我的建议是对行使用迭代器。
RowIteratior 这里是一个好的开始。
此外，获得行后，可以使用单元格迭代器循环访问单元格。请记住，未定义的单元格将被视为 null 并被跳过，但空单元格不为 null！
单元格迭代器在此处记录。
您的方法也很好，但是在使用对象之前，您需要在每次迭代中检查空值或空值。