java读取excel报错
import java.io.FileInputStream;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;


public class ExcelTest {
    public static void main(String[] args) {
        String fileToBeRead = "F:\test.xlsx";
        
        try {
            XSSFWorkbook  workbook = new XSSFWorkbook(new FileInputStream(fileToBeRead)); // 创建对Excel工作簿文件的引用
            XSSFSheet sheet = workbook.getSheet("test");  // 创建对工作表的引用
            
            int rows = sheet.getPhysicalNumberOfRows();//获取表格的
            for (int r = 0; r < rows; r++) {                //循环遍历表格的行
                String value = "";
                XSSFRow row = sheet.getRow(r);         //获取单元格中指定的行对象
                if (row != null) {
                    int cells = row.getPhysicalNumberOfCells();//获取单元格中指定列对象
                    for (short c = 0; c < cells; c++) {      //循环遍历单元格中的列                  
                        XSSFCell cell = row.getCell((short) c); //获取指定单元格中的列                      
                        if (cell != null) {
                            if (cell.getCellType() == XSSFCell.CELL_TYPE_STRING) {  //判断单元格的值是否为字符串类型                                
                                value += cell.getStringCellValue() + ",";
                            } else if (cell.getCellType() == XSSFCell.CELL_TYPE_NUMERIC) {  //判断单元格的值是否为数字类型