不能从excel文件读取最后一列数据

我正在从Excel文件中读取数据，以便在该列中生成工资代码empcode，emp_name，working_days，overtime_hour从excel文件读取数据时我只读第一列三列意味着我只读工作日我无法读取加class时间，请提出build议我错了，我尝试了下面的代码

public class csv_Upload extends JFrame implements ActionListener { public static JFrame f; JPanel panel; Connection con = null; JButton b1,b2,b3,b4; int Status=0; JTextField txt1; int company_id1=0; JLabel l1; Font g,g1; JFileChooser fc; JTextArea log; File file1 ; String str; JComboBox jb1; public csv_Upload() { panel=(JPanel)getContentPane(); panel.setLayout(null); g=new Font("Georgia",Font.BOLD,22); g1=new Font("Georgia",Font.BOLD,15); panel.setBackground(new java.awt.Color(204, 230 , 255)); l1=new JLabel("Upload Excel File"); l1.setBounds(200, 50, 400, 30); l1.setFont(g); l1.setForeground(Color.RED); panel.add(l1); jb1=LoadCombobox(); jb1.setBounds(200, 100, 180,30); jb1. addItem("Select Company"); panel.add(jb1); txt1=new JTextField(); txt1.setBounds(540, 150,200,40); panel.add(txt1); fc = new JFileChooser(); b1=new JButton("Browse File"); b1.setBounds(30, 150,200,40); b1.setFont(g1); b1.setForeground(Color.RED); panel.add(b1); b2=new JButton("Upload File"); b2.setBounds(240, 150,200,40); b2.setForeground(Color.RED); b2.setFont(g1); panel.add(b2); ImageIcon img=new ImageIcon("calender.png"); b3=new JButton(img); b3.setBounds(460, 150,50,30); b3.setForeground(Color.RED); b3.setFont(g1); panel.add(b3); b1.addActionListener(this); b2.addActionListener(this); b3.addActionListener(this); jb1.addItemListener(new company_events()); } @Override public void actionPerformed(ActionEvent e) { if (e.getSource() == b1) { int returnVal = fc.showOpenDialog(csv_Upload.this); if (returnVal == JFileChooser.APPROVE_OPTION) { file1 = fc.getSelectedFile(); str=String.valueOf(file1); System.out.println("file fath"+file1); } else { } } if(e.getSource()==b2) { if(!(txt1.getText().isEmpty())&&company_id1!=0) { try { FileInputStream file = new FileInputStream(new File(str)); System.out.println("action performed in file"+file); //Create Workbook instance holding reference to .xlsx file XSSFWorkbook workbook = new XSSFWorkbook(file); //Get first/desired sheet from the workbook XSSFSheet sheet = workbook.getSheetAt(0); //Iterate through each rows one by one Iterator<Row> rowIterator = sheet.iterator(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); int a=0; int emp_code1=0; int emp_id = 0; double working_days=0,Over_timehour = 0; Tax_Calculation tax=new Tax_Calculation(); //For each row, iterate through all the columns Iterator<Cell> cellIterator = row.cellIterator(); while (cellIterator.hasNext()) { Cell cell = cellIterator.next(); //Check the cell type and format accordingly switch (cell.getCellType()) { case Cell.CELL_TYPE_NUMERIC: if(a==0) { emp_code1=(int) cell.getNumericCellValue(); System.out.println("empcode"+emp_code1); } if(a==2) { working_days=cell.getNumericCellValue(); System.out.println("working days"+working_days); } if(a==3) { Over_timehour=cell.getNumericCellValue(); System.out.println("ot hour"+ Over_timehour); } a++; break; case Cell.CELL_TYPE_STRING: // System.out.print(cell.getStringCellValue() + "\t"); // a++; break; } // System.out.println("record is find"); // System.out.println("value is"+cell.getColumnIndex()); } System.out.println(""); System.out.println("new rows"); } file.close(); } catch (Exception e1) { e1.printStackTrace(); } if(Status>0) { JOptionPane.showMessageDialog(null, "Salary is generated"); } else { JOptionPane.showMessageDialog(null,"Salary is not Generated"); } } else { JOptionPane.showMessageDialog(null,"Please Select Comapny name and Date "); } } if(e.getSource().equals(b3)) { txt1.setText(new DatePicker(f).setPickedDate()); } } public JComboBox<String> LoadCombobox() { PreparedStatement st=null; ResultSet res=null; try { con = DbmsConnection.getConnection(); jb1=new JComboBox<String>(); String query="select * from company_details"; st =con.prepareStatement(query); res=st.executeQuery(); jb1.addItem("Please Select Company"); while(res.next()) { if(res.getString(6).equalsIgnoreCase("Active")) { jb1.addItem(res.getString(2)); } } } catch (SQLException e) { e.printStackTrace(); } finally { try { st.close(); res.close(); con.close(); } catch(SQLException ed) { ed.printStackTrace(); } } return jb1; } class company_events implements ItemListener { PreparedStatement stmt=null; ResultSet res=null; @Override public void itemStateChanged(ItemEvent e) { con=DbmsConnection.getConnection(); if(e.getStateChange()==ItemEvent.SELECTED) { System.out.println("selected company is"+String.valueOf(jb1.getSelectedItem())); try { stmt=con.prepareStatement("select company_id from company_details where company_name=?"); stmt.setString(1, String.valueOf(jb1.getSelectedItem())); res=stmt.executeQuery(); while(res.next()) { company_id1=res.getInt(1); } }catch (Exception e5) { e5.printStackTrace(); } finally { try { stmt.close(); res.close(); } catch (SQLException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } } } } } public static void main(String []s) { f=new csv_Upload(); f.setVisible(true); f.setSize(750,500); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } } 

Answer 1

我怀疑第一列员工姓名是非数字的。 因此，对于该列，您的a不会递增，并且不会等于3.您应该注意，打印出“工作日”的值实际上是电子表格中的加class时间值。

一种解决scheme是使用cell.getColumnIndex()而不是尝试手动计算列。