如何使用java POI从excel表中插入数据库读取？

Question

I'm reading the value from excel sheet using java POI and need to insert into database.I have string,numeric and date values from excel sheet as well as first fields are column header.

public class SimpleExcelReadExample {
  static Connection con1 = null;
  static Connection con3 = null;
  static PreparedStatement preparedstatement = null;
  static ResultSet resultset = null;
  int j = 0;

  public static void main(String[] args) {

        String fileName = "D:/Excel/Report.xls";
        Cleartables.table_daily_report();
        Vector dataHolder = read(fileName);
        saveToDatabase(dataHolder);
  }

  public static Vector read(String fileName) {
        Vector cellVectorHolder = new Vector();
        try {
              FileInputStream myInput = new FileInputStream(fileName);
              POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);
              HSSFWorkbook myWorkBook = new HSSFWorkbook(myFileSystem);
              HSSFSheet mySheet = myWorkBook.getSheetAt(0);
              Iterator rowIter = mySheet.rowIterator();
              while (rowIter.hasNext()) {
                    HSSFRow myRow = (HSSFRow) rowIter.next();
                    Iterator cellIter = myRow.cellIterator();
                    Vector cellStoreVector = new Vector();
                    while (cellIter.hasNext()) {
                          HSSFCell myCell = (HSSFCell) cellIter.next();
                          //System.out.println("read method"+myCell);
                          cellStoreVector.addElement(myCell);
                    }
                    cellVectorHolder.addElement(cellStoreVector);
              }
        } catch (Exception e) {
              e.printStackTrace();
        }
        return cellVectorHolder;
  }

  private static void saveToDatabase(Vector dataHolder)
  {

                    for (int i=0;i<dataHolder.size(); i++)
                    {
                       Vector cellStoreVector=(Vector)dataHolder.elementAt(i);
                       for (int j=0; j < cellStoreVector.size();j++)
                    {
                             System.out.println("show.....");
                            HSSFCell myCell = (HSSFCell)cellStoreVector.elementAt(j);

                           Please help me here....How to get the each column values  ?
                    }

Answer 1

try {

        FileInputStream file = new FileInputStream(new File("E://Imp/Details.xlsx"));
        XSSFWorkbook workbook = new XSSFWorkbook(file);
        XSSFSheet sheet = workbook.getSheetAt(0);
        Iterator<Row> rowIterator = sheet.iterator();
        rowIterator.next();
        while(rowIterator.hasNext())
        {
            Row row = rowIterator.next();
            //For each row, iterate through each columns
            Iterator<Cell> cellIterator = row.cellIterator();

            while(cellIterator.hasNext())
            {
                Cell cell = cellIterator.next();
                //This will change all Cell Types to String
                cell.setCellType(Cell.CELL_TYPE_STRING);
                switch(cell.getCellType()) 
                {
                    case Cell.CELL_TYPE_BOOLEAN:
                        System.out.println("boolean===>>>"+cell.getBooleanCellValue() + "\t");
                        break;
                    case Cell.CELL_TYPE_NUMERIC:

                        break;
                    case Cell.CELL_TYPE_STRING:

                       list.add(cell.getStringCellValue());

                                                 break;
                }


            }
            name=row.getCell(0).getStringCellValue();
            empid=row.getCell(1).getStringCellValue();
            add=row.getCell(2).getStringCellValue();
            mobile=row.getCell(3).getStringCellValue();
            System.out.println(name+empid+add+mobile);
            ex.InsertRowInDB(name,empid,add,mobile);
            System.out.println("");


        }
        file.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
  }
    public void InsertRowInDB(String name,String empid,String add,String mobile) throws SQLException{

        Statement stmt=db.con.createStatement();
        PreparedStatement ps=null;
        String sql="Insert into Employee(Name,EmployeeId,Address,ContactInfo) values(?,?,?,?)";
        ps=db.con.prepareStatement(sql);
        ps.setString(1, name);
        ps.setString(2, empid);
        ps.setString(3, add);
        ps.setString(4, mobile);
    ps.executeUpdate();
    System.out.println("Values Inserted Successfully");
    }
}

Answer 2

Try this:

try {

        String jdbc_insert_sql = "INSERT INTO TBL_PUNETORET"
                + "( NUMRI_PERSONAL, EMRI_MBIEMRI,DATELINDJA,ADRESA,TELEFONI,DATA_PUNSIMIT,DATA_LARGIMIT,NJESIA,POZITA,TELEFONI_P,EMAIL,PERSHKRIMI,PUNTORI,REKOMANDUAR) "
                + "VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
        Class.forName("oracle.jdbc.driver.OracleDriver");

        PreparedStatement preStatement = con.prepareStatement(jdbc_insert_sql);
        con.setAutoCommit(false);

        FileInputStream input = new FileInputStream(filename);
        POIFSFileSystem fs = null;
        try {
            fs = new POIFSFileSystem(input);
        } catch (IOException ex) {
            Logger.getLogger(PunetoretForm.class.getName()).log(Level.SEVERE, null, ex);
        }
        HSSFWorkbook wb = new HSSFWorkbook(fs);
        HSSFSheet sheet = wb.getSheetAt(0);
        Row row;
        for (int i = 1; i <= sheet.getLastRowNum(); i++) {
            row = sheet.getRow(i);
            int numripersonal = (int) (row.getCell(0).getNumericCellValue());
            //String numripersonal =  row.getCell(0).getStringCellValue(); 
            String emri = row.getCell(1).getStringCellValue();
            Date datelindja = row.getCell(4).getDateCellValue();
            DateFormat df = new SimpleDateFormat("dd/MMM/yyyy");
            String reportDate = df.format(datelindja);
            df.parse(reportDate);
            String adresa = row.getCell(5).getStringCellValue();
            int telefoni = (int) (row.getCell(6).getNumericCellValue());
            //String telefoni = row.getCell(4).getStringCellValue();
            Date datap = row.getCell(7).getDateCellValue();
            df = new SimpleDateFormat("dd/MMM/yyyy");
            String reportDatap = df.format(datap);
            df.parse(reportDatap);

            Date datal = row.getCell(8).getDateCellValue();
            String ss = null;
            if (datal != null) {
                df = new SimpleDateFormat("dd/MMM/yyyy");
                ss = df.format(datal);
                df.parse(ss);

            }

            String njesia = row.getCell(9).getStringCellValue();
            String pozita = row.getCell(10).getStringCellValue();
            int telp = (int) (row.getCell(11).getNumericCellValue());
            if (telp == 0) {
                String s = String.valueOf(telp);
                s = "Ska numer";
            }
            //String telp = row.getCell(9).getStringCellValue();
            String email = row.getCell(12).getStringCellValue();
            String pershkrimi = row.getCell(13).getStringCellValue();
            String punetori = row.getCell(14).getStringCellValue();
            String rekomanduar = row.getCell(15).getStringCellValue();
            if (datal == null) {
                String sql = "INSERT INTO TBL_PUNETORET ( NUMRI_PERSONAL, EMRI_MBIEMRI,DATELINDJA,ADRESA,TELEFONI,DATA_PUNSIMIT,DATA_LARGIMIT,NJESIA,POZITA,TELEFONI_P,EMAIL,PERSHKRIMI,PUNTORI,REKOMANDUAR) "
                        + "VALUES('" + numripersonal + "','" + emri + "','" + reportDate + "','" + adresa + "','" + telefoni + "','" + reportDatap + "'," + datal + ",'" + njesia + "','" + pozita + "','" + telp + "','" + email + "','" + pershkrimi + "','" + rekomanduar + "','" + punetori + "')";
                preStatement = (PreparedStatement) con.prepareStatement(sql);
                preStatement.execute();
            }

Answer 3

This is the code that I wrote for the same operation. Please note that I have also created an Employee java class with all these 4 properties: id,name, gender salary with their getter-setters.

package com.hibernate.poiex2;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Iterator;
import java.util.Properties;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 *
 * @author nidhi
 */
public class POIex2 {

    XSSFRow row;
    Employee e = new Employee();

    public static void main(String[] args) throws IOException {

        String fileName = "/home/nidhi/Downloads/Employees.xlsx";
        POIex2 poIex2 = new POIex2();
        poIex2.readFile(fileName);
    }

    public void readFile(String fileName) throws FileNotFoundException, IOException {
        FileInputStream fis;
        try {
            System.out.println("-------------------------------READING THE SPREADSHEET-------------------------------------");
            fis = new FileInputStream(fileName);
            XSSFWorkbook workbookRead = new XSSFWorkbook(fis);
            XSSFSheet spreadsheetRead = workbookRead.getSheetAt(0);

            Iterator< Row> rowIterator = spreadsheetRead.iterator();
            while (rowIterator.hasNext()) {
                row = (XSSFRow) rowIterator.next();
                Iterator< Cell> cellIterator = row.cellIterator();

                while (cellIterator.hasNext()) {
                    Cell cell = cellIterator.next();
                    cell.setCellType(CellType.STRING);
                    switch (cell.getColumnIndex()) {
                        case 0:
                            System.out.print(
                                    cell.getStringCellValue() + " \t\t");
                            break;
                        case 1:
                            System.out.print(
                                    cell.getStringCellValue() + " \t\t");
                            break;
                        case 2:
                            System.out.print(
                                    cell.getStringCellValue() + " \t\t");
                            break;
                        case 3:
                            System.out.print(
                                    cell.getStringCellValue() + " \t\t");
                            break;
                        case 4:
                            System.out.print(
                                    cell.getStringCellValue() + " \t\t");
                            break;
                    }
                }
                System.out.println();
                e.empId = Integer.parseInt(row.getCell(0).getStringCellValue());
                e.empName = row.getCell(1).getStringCellValue();
                e.gender = row.getCell(2).getStringCellValue();
                e.salary = row.getCell(3).getStringCellValue();

                InsertRowInDB(e.empId, e.empName, e.gender, e.salary);
            }
            System.out.println("Values Inserted Successfully");

            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void InsertRowInDB(int empId, String empName, String gender, String salary) {

        Float salaryDB = Float.parseFloat(salary);
        try {

            Properties properties = new Properties();
            properties.setProperty("user", "root");
            properties.setProperty("password", "root");
            properties.setProperty("useSSL", "false");
            properties.setProperty("autoReconnect", "true");

            Class.forName("com.mysql.jdbc.Driver");
            Connection connect = DriverManager.getConnection("jdbc:mysql://localhost:3306/Attendance", properties);
            Statement stmt = connect.createStatement();
            PreparedStatement ps = null;
            String sql = "INSERT INTO `Attendance`.`Employee_Master`\n"
                    + "(`EmployeeId`,\n"
                    + "`EmployeeName`,\n"
                    + "`Gender`,\n"
                    + "`Salary`)\n"
                    + "VALUES(?,?,?,?)";
            ps = connect.prepareStatement(sql);
            ps.setInt(1, empId);
            ps.setString(2, empName);
            ps.setString(3, gender);
            ps.setFloat(4, salaryDB);
            ps.executeUpdate();
            connect.close();
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        }
    }
}

Answer 4

try this

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;

import com.mani.beans.Student;

public class ReadDataFromExcel {
    public static void main(String args[]) throws IOException {
        SessionFactory sf = new AnnotationConfiguration().configure("com/mani/resources/hibernate.cfg.xml").buildSessionFactory();
        Session session = sf.openSession();
        FileInputStream file = new FileInputStream(new File("C:/Users/mani/Desktop/data.xlsx")); 
        XSSFWorkbook workbook = new XSSFWorkbook(file); 
        XSSFSheet sheet = workbook.getSheetAt(1); 
        Row row;
        for(int i=1; i<=sheet.getLastRowNum(); i++){  //points to the starting of excel i.e excel first row
            row = (Row) sheet.getRow(i);  //sheet number


                String id;
                if( row.getCell(0)==null) { id = "0"; }
                else id= row.getCell(0).toString();

                   String name;
                if( row.getCell(1)==null) { name = "null";}  //suppose excel cell is empty then its set to 0 the variable
                   else name = row.getCell(1).toString();   //else copies cell data to name variable

                   String address;
                if( row.getCell(2)==null) { address = "null";   }
                   else  address   = row.getCell(2).toString();
        Transaction t = session.beginTransaction();
        Student std = new Student();
        std.setId(Double.parseDouble(id));
        std.setName(name);
        std.setAddress(address);
        System.out.println(std.getId()+" "+std.getName()+" "+std.getAddress());
        session.saveOrUpdate(std);
        t.commit();     
        }
        file.close();
    }


}`

Answer 5

Excel file insert into database. It works for me.

Imported jar files:

• poi-ooxml 3.5-beta5
• xmlbeans
• apache-logging-log4j
• dom4j-1.5
• poi 3.10.1
• poi 3.14
• poi ooxml-schema 3.7-beta5

Dont forget to import database jar file.

Hope it will help you.

public class ExcelToDatabase {
 public static void main(String[] args) {
  try {
   String filename = "exceldatabase.xlsx";
   try (FileInputStream file = new FileInputStream(new File(filename))) {
    Workbook workbook = WorkbookFactory.create(file);
    Class.forName("com.mysql.jdbc.Driver");
    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "root");

    String jdbc_insert_sql = "INSERT INTO employee" + "VALUES(?,?,?)";
    PreparedStatement preStatement = con.prepareStatement(jdbc_insert_sql);

    Sheet sheet = workbook.getSheetAt(0);
    Row row;
    System.out.println("last row number is=========" + sheet.getLastRowNum());
    for (int i = 1; i <= sheet.getLastRowNum(); i++) {
     row = sheet.getRow(i);
     int empId = (int)(row.getCell(0).getNumericCellValue());
     String empName = row.getCell(1).getStringCellValue();
     String empEmail = row.getCell(2).getStringCellValue();

     String sql = "insert into employee " + "values('" + empId + "','" + empName + "','" + empEmail + "')";
     preStatement = (PreparedStatement) con.prepareStatement(sql);
     preStatement.execute();
     System.out.println("Records inserted.........." + i);

    }
    System.out.println("");
   }
  } catch (Exception e) {}
 }
}

Answer 6

how to read data from excel sheet and insert into database table in java

if (fileName.endsWith(".xls")) {

                CustomerVo customerVo = new CustomerVo();//your vo 
                File myFile = new File("file location" + fileName);
                FileInputStream fis = new FileInputStream(myFile);

                // Finds the workbook instance for XLSX file

                org.apache.poi.ss.usermodel.Workbook workbook = null;
                try {
                    workbook = WorkbookFactory.create(fis);
                } catch (InvalidFormatException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                Row row = null;
                // Return first sheet from the XLSX workbook
                org.apache.poi.ss.usermodel.Sheet sheet = workbook.getSheetAt(0);

                // Get iterator to all the rows in current sheet
                Iterator<Row> rowIterator = sheet.iterator();
                int i = 0;
                // Traversing over each row of XLSX file
                while (rowIterator.hasNext()) {

                    row = rowIterator.next();
                    Iterator<Cell> cellIterator = row.cellIterator();
                    if (i != 0) {

                        while (cellIterator.hasNext()) {
                            Cell cell = cellIterator.next();
                            if (i != 0) {
                                switch (cell.getCellType()) {
                                case Cell.CELL_TYPE_STRING:
                                    System.out.print(cell.getStringCellValue());
                                    customerVo.setName(row.getCell(1).getStringCellValue());
                                    customerVo.setSex(row.getCell(2).getStringCellValue());

                                    DateFormat formatter = new SimpleDateFormat("E MMM dd HH:mm:ss Z yyyy");
                                    Date date;
                                    try {
                                        date = (Date) formatter.parse(row.getCell(3).getStringCellValue());
                                        customerVo.setDob(date);
                                    } catch (ParseException e) {
                                        // TODO Auto-generated catch block
                                        e.printStackTrace();
                                    }

                                    customerVo.setEmail(row.getCell(4).getStringCellValue());
                                    customerVo.setAddress(row.getCell(6).getStringCellValue());
                                    customerVo.setCity(row.getCell(8).getStringCellValue());
                                    customerVo.setState(row.getCell(9).getStringCellValue());
                                    break;
                                case Cell.CELL_TYPE_BOOLEAN:
                                    System.out.print(cell.getBooleanCellValue());
                                    break;
                                case Cell.CELL_TYPE_NUMERIC:
                                    System.out.print(cell.getNumericCellValue());
                                    customerVo.setAccountnumber((int) row.getCell(0).getNumericCellValue());
                                    customerVo.setPincode((int) row.getCell(7).getNumericCellValue());
                                    customerVo.setBalance((int) row.getCell(10).getNumericCellValue());
                                    customerVo.setMobile((long) row.getCell(5).getNumericCellValue());
                                    break;
                                }
                                System.out.print(" - ");
                            }
                            i++;

                        }
                        System.out.println(customerVo);//your data store in the object
                        fileUploadService.customerFile(customerVo);//this method using mvc service to dao impl 
                    }
                    i++;
                }
            }

// for storing file to db

@Repository public class FileUploadDAOImpl implements FIleUploadDAO {

@Autowired
private DataSource dataSource;


@Override
public CustomerVo customerFile(CustomerVo customerVo) {

    String query = "insert into file_upload_table(name,sex,dob,email,mobile,address,pincode,city,state,balance,account_number)"
            + "values(?,?,?,?,?,?,?,?,?,?,?)";

    Connection connection = null;
    try {
        connection = dataSource.getConnection();

        Date oldDate = new Date(customerVo.getDob().getTime());

        java.sql.PreparedStatement ps = null;
        java.sql.ResultSet rs = null;
        try {
            ps = connection.prepareStatement(query);
            // ps.setLong(1, customerVO.getAccountNo());
            ps.setString(1, customerVo.getName());
            ps.setString(2, customerVo.getSex());
            ps.setDate(3,oldDate);
            ps.setString(4, customerVo.getEmail());
            ps.setLong(5, customerVo.getMobile());
            ps.setString(6, customerVo.getAddress());
            ps.setLong(7, customerVo.getPincode());
            ps.setString(8, customerVo.getCity());
            ps.setString(9, customerVo.getState());
            ps.setLong(10, customerVo.getBalance());
            ps.setLong(11, customerVo.getAccountnumber());
            ps.executeUpdate();

        } catch (SQLException e) {
            // TODO: handle exception
            e.printStackTrace();
        }


    } catch (SQLException e) {

        // TODO Auto-generated catch block

        e.printStackTrace();
    }